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Al-Mashaqbeh O, Alsalhi L, Salaymeh L, Dotro G, Lyu T. Treatment of pharmaceutical industry wastewater for water reuse in Jordan using hybrid constructed wetlands. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 939:173634. [PMID: 38823717 DOI: 10.1016/j.scitotenv.2024.173634] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2024] [Revised: 05/19/2024] [Accepted: 05/28/2024] [Indexed: 06/03/2024]
Abstract
Developing cost-efficient wastewater treatment technologies for safe reuse is essential, especially in developing countries simultaneously facing water scarcity. This study developed and evaluated a hybrid constructed wetlands (CWs) approach, incorporating tidal flow (TF) operation and utilising local Jordanian zeolite as a wetland substrate for real pharmaceutical industry wastewater treatment. Over 273 days of continuous monitoring, the results revealed that the first-stage TFCWs filled with either raw or modified zeolite performed significantly higher reductions in Chemical Oxygen Demand (COD, 58 %-60 %), Total Nitrogen (TN, 32 %-37 %), and Phosphate (PO4, 46 %-64 %) compared to TFCWs filled with normal sand. Water quality further improved after the second stage of horizontal subsurface flow CWs treatment, achieving log removals of 1.09-2.47 for total coliform and 1.89-2.09 for E. coli. With influent pharmaceutical concentrations ranging from 275 to 2000 μg/L, the zeolite-filled hybrid CWs achieved complete removal (>98 %) for ciprofloxacin, ofloxacin, erythromycin, and enrofloxacin, moderate removal (43 %-81 %) for flumequine and lincomycin, and limited removal (<8 %) for carbamazepine and diclofenac. The overall accumulation of pharmaceuticals in plant tissue and substrate adsorption accounted for only 2.3 % and 4.3 %, respectively, of the total mass removal. Biodegradation of these pharmaceuticals (up to 61 %) through microbial-mediated processes or within plant tissues was identified as the key removal pathway. For both conventional pollutants and pharmaceuticals, modified zeolite wetland media could only slightly enhance treatment without a significant difference between the two treatment groups. The final effluent from all hybrid CWs complied with Jordanian treated industry wastewater reuse standards (category III), and systems filled with raw or modified zeolite achieved over 95 % of samples meeting the highest water reuse category I. This study provides evidence of using hybrid CWs technology as a nature-based solution to address water safety and scarcity challenges.
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Affiliation(s)
- Othman Al-Mashaqbeh
- Emerging Pollutants Research Unit, Royal Scientific Society, P.O. Box 1438, Amman, 11941, Jordan
| | - Layal Alsalhi
- Emerging Pollutants Research Unit, Royal Scientific Society, P.O. Box 1438, Amman, 11941, Jordan
| | - Lana Salaymeh
- Emerging Pollutants Research Unit, Royal Scientific Society, P.O. Box 1438, Amman, 11941, Jordan
| | - Gabriela Dotro
- School of Water, Energy and Environment, Cranfield University, College Road, Cranfield, Bedfordshire MK43 0AL, United Kingdom
| | - Tao Lyu
- School of Water, Energy and Environment, Cranfield University, College Road, Cranfield, Bedfordshire MK43 0AL, United Kingdom.
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Lobos AE, Brandt AM, Gallard-Góngora JF, Korde R, Brodrick E, Harwood VJ. Persistence of sewage-associated genetic markers in advanced and conventional treated recycled water: implications for microbial source tracking in surface waters. mBio 2024; 15:e0065524. [PMID: 38864636 PMCID: PMC11253620 DOI: 10.1128/mbio.00655-24] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2024] [Accepted: 05/14/2024] [Indexed: 06/13/2024] Open
Abstract
Sewage contamination of environmental waters is increasingly assessed by measuring DNA from sewage-associated microorganisms in microbial source tracking (MST) approaches. However, DNA can persist through wastewater treatment and reach surface waters when treated sewage/recycled water is discharged, which may falsely indicate pollution from untreated sewage. Recycled water discharged from an advanced wastewater treatment (AWT) facility into a Florida stream elevated the sewage-associated HF183 marker 1,000-fold, with a minimal increase in cultured Escherichia coli. The persistence of sewage-associated microorganisms was compared by qPCR in untreated sewage and recycled water from conventional wastewater treatment (CWT) and AWT facilities. E. coli (EC23S857) and sewage-associated markers HF183, H8, and viral crAssphage CPQ_056 were always detected in untreated sewage (6.5-8.7 log10 GC/100 mL). Multivariate analysis found a significantly greater reduction of microbial variables via AWT vs CWT. Bacterial markers decayed ~4-5 log10 through CWT, but CPQ_056 was ~100-fold more persistent. In AWT facilities, the log10 reduction of all variables was ~5. In recycled water, bacterial marker concentrations were significantly correlated (P ≤ 0.0136; tau ≥ 0.44); however, CPQ_056 was not correlated with any marker, suggesting varying drivers of decay. Concentrations of cultured E. coli carrying the H8 marker (EcH8) in untreated sewage were 5.24-6.02 log10 CFU/100 mL, while no E. coli was isolated from recycled water. HF183 and culturable EcH8 were also correlated in contaminated surface waters (odds ratio β1 = 1.701). Culturable EcH8 has a strong potential to differentiate positive MST marker signals arising from treated (e.g., recycled water) and untreated sewage discharged into environmental waters. IMPORTANCE Genes in sewage-associated microorganisms are widely accepted indicators of sewage pollution in environmental waters. However, DNA persists through wastewater treatment and can reach surface waters when recycled water is discharged, potentially causing false-positive indications of sewage contamination. Previous studies have found that bacterial and viral sewage-associated genes persist through wastewater treatment; however, these studies did not compare different facilities or identify a solution to distinguish sewage from recycled water. In this study, we demonstrated the persistence of bacterial marker genes and the greater persistence of a viral marker gene (CPQ_056 of crAssphage) through varying wastewater treatment facilities. We also aim to provide a tool to confirm sewage contamination in surface waters with recycled water inputs. This work showed that the level of wastewater treatment affects the removal of microorganisms, particularly viruses, and expands our ability to identify sewage in surface waters.
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Affiliation(s)
- Aldo E. Lobos
- Department of Integrative Biology, University of South Florida, Tampa, Florida, USA
| | - Amanda M. Brandt
- Department of Integrative Biology, University of South Florida, Tampa, Florida, USA
| | - Javier F. Gallard-Góngora
- Department of Earth, Marine, and Environmental Sciences, Institute of Marine Science, University of North Carolina at Chapel Hill, Morehead City, North Carolina, USA
| | - Ruchi Korde
- Department of Integrative Biology, University of South Florida, Tampa, Florida, USA
| | - Eleanor Brodrick
- Department of Integrative Biology, University of South Florida, Tampa, Florida, USA
| | - Valerie J. Harwood
- Department of Integrative Biology, University of South Florida, Tampa, Florida, USA
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Tang Y, Sasaki K, Ihara M, Sugita D, Yamashita N, Takeuchi H, Tanaka H. Evaluation of virus removal in membrane bioreactor (MBR) and conventional activated sludge (CAS) processes based on long-term monitoring at two wastewater treatment plants. WATER RESEARCH 2024; 253:121197. [PMID: 38341968 DOI: 10.1016/j.watres.2024.121197] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Revised: 01/13/2024] [Accepted: 01/23/2024] [Indexed: 02/13/2024]
Abstract
The membrane bioreactor (MBR) process always offers better wastewater treatment than conventional activated sludge (CAS) treatment. However, the difference in their efficacy of virus reduction remains unknown. To investigate this, we monitored virus concentrations before and after MBR and CAS processes over 2 years. Concentrations of norovirus genotypes I and II (NoV GI and GII), aichivirus (AiV), F-specific RNA phage genotypes I, II, and III (GI-, GII-, and GIII-FRNAPHs), and pepper mild mottle virus (PMMoV) were measured by a quantitative polymerase chain reaction (qPCR) method at two municipal wastewater treatment plants (WWTPs A and B) in Japan. Virus concentration datasets containing left-censored data were estimated by using both maximum likelihood estimation (MLE) and robust regression on order statistics (rROS) approaches. PMMoV was the most prevalent at both WWTPs, with median concentrations of 7.5 to 8.8 log10 copies/L before treatment. Log10 removal values (LRVs) of all viruses based on means and standard deviations of concentrations before and after treatment were consistently higher following MBR than following CAS. We used NoV GII as a model pathogen in a quantitative microbial risk assessment of the treated water, and we estimated the additional reductions required following MBR and CAS processes to meet the guideline of 10-6 DALYs pppy for safe wastewater reuse.
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Affiliation(s)
- Yu Tang
- Research Center for Environmental Quality Management, Graduate School of Engineering, Kyoto University, Shiga 520-0811, Japan.
| | - Kenta Sasaki
- Research Center for Environmental Quality Management, Graduate School of Engineering, Kyoto University, Shiga 520-0811, Japan
| | - Masaru Ihara
- Research Center for Environmental Quality Management, Graduate School of Engineering, Kyoto University, Shiga 520-0811, Japan; Faculty of Agriculture and Marine Science, Kochi University, Nankoku, Kochi 783-8502, Japan.
| | - Daichi Sugita
- Research Center for Environmental Quality Management, Graduate School of Engineering, Kyoto University, Shiga 520-0811, Japan
| | - Naoyuki Yamashita
- Course of Rural Engineering, Department of Science and Technology for Biological Resources and Environment, Faculty of Agriculture, Graduate School of Agriculture, Ehime University, 3-5-7, Tarumi, Matsuyama, Ehime 790-8566, Japan
| | - Haruka Takeuchi
- Research Center for Environmental Quality Management, Graduate School of Engineering, Kyoto University, Shiga 520-0811, Japan
| | - Hiroaki Tanaka
- Research Center for Environmental Quality Management, Graduate School of Engineering, Kyoto University, Shiga 520-0811, Japan
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Rivadulla M, Lois M, Elena AX, Balboa S, Suarez S, Berendonk TU, Romalde JL, Garrido JM, Omil F. Occurrence and fate of CECs (OMPs, ARGs and pathogens) during decentralised treatment of black water and grey water. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 915:169863. [PMID: 38190906 DOI: 10.1016/j.scitotenv.2023.169863] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Revised: 12/13/2023] [Accepted: 12/31/2023] [Indexed: 01/10/2024]
Abstract
Decentralised wastewater treatment is becoming a suitable strategy to reduce cost and environmental impact. In this research, the performance of two technologies treating black water (BW) and grey water (GW) fractions of urban sewage is carried out in a decentralised treatment of the wastewater produced in three office buildings. An Anaerobic Membrane Bioreactor (AnMBR) treating BW and a Hybrid preanoxic Membrane Bioreactor (H-MBR) containing small plastic carrier elements, treating GW were operated at pilot scale. Their potential on reducing the release of contaminants of emerging concern (CECs) such as Organic Micropollutants (OMPs), Antibiotic Resistance Genes (ARGs) and pathogens was studied. After 226 d of operation, a stable operation was achieved in both systems: the AnMBR removed 92.4 ± 2.5 % of influent COD, and H-MBR removed 89.7 ± 3.5 %. Regarding OMPs, the profile of compounds differed between BW and GW, being BW the matrix with more compounds detected at higher concentrations (up to μg L-1). For example, in the case of ibuprofen the concentrations in BW were 23.63 ± 3.97 μg L-1, 3 orders of magnitude higher than those detected in GW. The most abundant ARGs were sulfonamide resistant genes (sul1) and integron class 1 (intl1) in both BW and GW. Pathogenic bacteria counts were reduced between 1 and 3 log units in the AnMBR. Bacterial loads in GW were much lower than in BW, being no bacterial re-growth observed for the GW effluents after treatment in the H-MBR. None of the selected enteric viruses was detected in GW treatment line.
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Affiliation(s)
- M Rivadulla
- CRETUS, Department of Chemical Engineering, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Galicia, Spain.
| | - M Lois
- CRETUS, Department of Microbiology and Parasitology, CIBUS-Facultade de Bioloxía, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - A X Elena
- Technische Universität Dresden, Institute of Hydrobiology, Dresden, Germany
| | - S Balboa
- CRETUS, Department of Chemical Engineering, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Galicia, Spain
| | - S Suarez
- CRETUS, Department of Chemical Engineering, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Galicia, Spain
| | - T U Berendonk
- Technische Universität Dresden, Institute of Hydrobiology, Dresden, Germany
| | - J L Romalde
- CRETUS, Department of Microbiology and Parasitology, CIBUS-Facultade de Bioloxía, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - J M Garrido
- CRETUS, Department of Chemical Engineering, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Galicia, Spain
| | - F Omil
- CRETUS, Department of Chemical Engineering, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Galicia, Spain
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Farkas K, Pântea I, Woodhall N, Williams D, Lambert-Slosarska K, Williams RC, Grimsley JMS, Singer AC, Jones DL. Diurnal changes in pathogenic and indicator virus concentrations in wastewater. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:123785-123795. [PMID: 37989946 PMCID: PMC10746776 DOI: 10.1007/s11356-023-30381-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Accepted: 10/06/2023] [Indexed: 11/23/2023]
Abstract
Wastewater-based epidemiology (WBE) has been commonly used for monitoring SARS-CoV-2 outbreaks. As sampling times and methods (i.e. grab vs composite) may vary, diurnal changes of viral concentrations in sewage should be better understood. In this study, we collected untreated wastewater samples hourly for 4 days at two wastewater treatment plants in Wales to establish diurnal patterns in virus concentrations and the physico-chemical properties of the water. Simultaneously, we also trialled three absorbent materials as passive samples as a simple and cost-efficient alternative for the collection of composite samples. Ninety-six percent of all liquid samples (n = 74) and 88% of the passive samplers (n = 59) were positive for SARS-CoV-2, whereas 87% and 97% of the liquid and passive samples were positive for the faecal indicator virus crAssphage, respectively. We found no significant daily variations in the concentration of the target viruses, ammonium and orthophosphate, and the pH and electrical conductivity levels were also stable. Weak positive correlations were found between some physico-chemical properties and viral concentrations. More variation was observed in samples taken from the influent stream as opposed to those taken from the influent tank. Of the absorbent materials trialled as passive samples, we found that tampons provided higher viral recoveries than electronegative filter paper and cotton gauze swabs. For all materials tested, viral recovery was dependent on the virus type. Our results indicate that grab samples may provide representative alternatives to 24-h composite samples if taken from the influent tank, hence reducing the costs of sampling for WBE programmes. Tampons are also viable alternatives for cost-efficient sampling; however, viral recovery should be optimised prior to use.
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Affiliation(s)
- Kata Farkas
- School of Environmental Natural Sciences, Bangor University, Bangor, LL57 2UW, Gwynedd, UK.
| | - Igor Pântea
- School of Environmental Natural Sciences, Bangor University, Bangor, LL57 2UW, Gwynedd, UK
| | - Nick Woodhall
- School of Environmental Natural Sciences, Bangor University, Bangor, LL57 2UW, Gwynedd, UK
| | - Denis Williams
- School of Environmental Natural Sciences, Bangor University, Bangor, LL57 2UW, Gwynedd, UK
| | | | - Rachel C Williams
- School of Environmental Natural Sciences, Bangor University, Bangor, LL57 2UW, Gwynedd, UK
| | - Jasmine M S Grimsley
- Data Analytics & Surveillance Division, UK Health Security Agency, 10 South Colonnade, Canary Wharf, London, E14 4PU, UK
- The London Data Company, London, EC2N 2AT, UK
| | - Andrew C Singer
- UK Centre for Ecology & Hydrology, Wallingford, OX10 8BB, UK
| | - Davey L Jones
- School of Environmental Natural Sciences, Bangor University, Bangor, LL57 2UW, Gwynedd, UK
- Food Futures Institute, Murdoch University, Murdoch, WA, 6150, Australia
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6
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Shivaram KB, Bhatt P, Applegate B, Simsek H. Bacteriophage-based biocontrol technology to enhance the efficiency of wastewater treatment and reduce targeted bacterial biofilms. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 862:160723. [PMID: 36496019 DOI: 10.1016/j.scitotenv.2022.160723] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Revised: 11/13/2022] [Accepted: 12/02/2022] [Indexed: 06/17/2023]
Abstract
Wastewater treatment is an essential process for public health and a sustainable ecosystem. Inadequate wastewater treatment can lead to the release of organic and inorganic pollutants and pathogenic bacteria into the receiving waters which could be further utilized for recreation purposes. The interaction between bacteriophage and bacteria in a wastewater treatment plant plays a major role in maintaining the treatment process. Phage therapy has been proposed as an alternative to conventional treatment methods as bacteriophages can be used on specific targets and leave useful bacteria unharmed. The bacterial species, which are responsible for bulking, foaming, and biofilm formation in a wastewater treatment plant (WWTP) have been identified and their respective phages are isolated to control their growth. Phages with lytic life cycles are preferred to lysogenic. Lytic phages can kill the specific target as they lyse the cell, infect most of the hosts, and have an immediate effect on controlling problems caused by bacteria in a WWTP. The bacteriophages such as T7, SPI1, GTE7, PhaxI, MAG1, MAG2, ϕPh_Se01, ϕPh_Se02, and Bxb1 have been investigated for the removal of bacterial biofilms from wastewater. Novel experimental setups have improved the efficiency of phage therapy in small-scale and pilot-scale experiments. Much more in-depth knowledge of the microbial community and their interaction would help promote the usage of phage therapy in large-scale wastewater treatments. This paper has covered the recent advancements in phage therapy as an effective biocontrol of pathogenic bacteria in the wastewater treatment process and has looked at certain shortcomings that have to be improved.
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Affiliation(s)
- Karthik Basthi Shivaram
- Department of Agricultural & Biological Engineering, Purdue University, West Lafayette, IN 47906, USA
| | - Pankaj Bhatt
- Department of Agricultural & Biological Engineering, Purdue University, West Lafayette, IN 47906, USA
| | - Bruce Applegate
- Department of Food Science, Purdue University, West Lafayette, IN 47906, USA
| | - Halis Simsek
- Department of Agricultural & Biological Engineering, Purdue University, West Lafayette, IN 47906, USA.
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Ilyas A, Vankelecom IFJ. Designing sustainable membrane-based water treatment via fouling control through membrane interface engineering and process developments. Adv Colloid Interface Sci 2023; 312:102834. [PMID: 36634445 DOI: 10.1016/j.cis.2023.102834] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Revised: 12/05/2022] [Accepted: 01/04/2023] [Indexed: 01/09/2023]
Abstract
Membrane-based water treatment processes have been established as a powerful approach for clean water production. However, despite the significant advances made in terms of rejection and flux, provision of sustainable and energy-efficient water production is restricted by the inevitable issue of membrane fouling, known to be the major contributor to the elevated operating costs due to frequent chemical cleaning, increased transmembrane resistance, and deterioration of permeate flux. This review provides an overview of fouling control strategies in different membrane processes, such as microfiltration, ultrafiltration, membrane bioreactors, and desalination via reverse osmosis and forward osmosis. Insights into the recent advancements are discussed and efforts made in terms of membrane development, modules arrangement, process optimization, feed pretreatment, and fouling monitoring are highlighted to evaluate their overall impact in energy- and cost-effective water treatment. Major findings in four key aspects are presented, including membrane surface modification, modules design, process integration, and fouling monitoring. Among the above mentioned anti-fouling strategies, a large part of research has been focused on membrane surface modifications using a number of anti-fouling materials whereas much less research has been devoted to membrane module advancements and in-situ fouling monitoring and control. At the end, a critical analysis is provided for each anti-fouling strategy and a rationale framework is provided for design of efficient membranes and process for water treatment.
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Affiliation(s)
- Ayesha Ilyas
- Membrane Technology Group (MTG), Division cMACS, Faculty of Bioscience Engineering, KU Leuven, Celestijnenlaan 200F, Box 2454, 3001 Leuven, Belgium
| | - Ivo F J Vankelecom
- Membrane Technology Group (MTG), Division cMACS, Faculty of Bioscience Engineering, KU Leuven, Celestijnenlaan 200F, Box 2454, 3001 Leuven, Belgium.
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Amoah ID, Kumari S, Bux F. A probabilistic assessment of microbial infection risks due to occupational exposure to wastewater in a conventional activated sludge wastewater treatment plant. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 843:156849. [PMID: 35728649 DOI: 10.1016/j.scitotenv.2022.156849] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Revised: 06/16/2022] [Accepted: 06/16/2022] [Indexed: 06/15/2023]
Abstract
Exposure to pathogens during wastewater treatment could result in significant health risks. In this paper, a probabilistic approach for assessing the risks of microbial infection for workers in an activated sludge wastewater treatment plant is presented. A number of exposure routes were modelled, including hand-to-mouth and droplet ingestion of untreated wastewater, droplet ingestion and inhalation of aerosols after secondary treatment, and ingestion of sludge during drying. Almost all workers exposed to untreated wastewater could be infected with the three selected potential pathogens of pathogenic E. coli, Norovirus and Cryptosporidium spp. Hand-to-mouth ingestion is the single most significant route of exposure at the head of works. There is also a risk of infections resulting from ingestion of droplets or inhalation of aerosols at the aeration tanks or contaminated hands at the clarifiers during secondary wastewater treatment. For sludge, the risks of infection with Norovirus was found to be the highest due to accidental ingestion (median risks of 2.2 × 10-2(±3.3 × 10-3)). Regardless of the point and route of exposure, Norovirus and Cryptosporidium spp. presented the highest risks. The study finds that occupational exposure to wastewater at wastewater treatment plants can result in significant viral and protozoan infections. This risk assessment framework can be used to establish and measure the success of risk reduction measures in wastewater treatment plants. These measures could include the use of personal protective equipment and adherence to strict personal hygiene.
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Affiliation(s)
- Isaac Dennis Amoah
- Institute for Water and Wastewater Technology, Durban University of Technology, P.O. Box 1334, Durban 4000, South Africa
| | - Sheena Kumari
- Institute for Water and Wastewater Technology, Durban University of Technology, P.O. Box 1334, Durban 4000, South Africa
| | - Faizal Bux
- Institute for Water and Wastewater Technology, Durban University of Technology, P.O. Box 1334, Durban 4000, South Africa.
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Hazra M, Joshi H, Williams JB, Watts JEM. Antibiotics and antibiotic resistant bacteria/genes in urban wastewater: A comparison of their fate in conventional treatment systems and constructed wetlands. CHEMOSPHERE 2022; 303:135148. [PMID: 35640694 DOI: 10.1016/j.chemosphere.2022.135148] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Revised: 05/09/2022] [Accepted: 05/25/2022] [Indexed: 06/15/2023]
Abstract
There is a growing concern that the use and misuse of antibiotics can increase the detection of antibiotic resistant genes (ARGs) in wastewater. Conventional wastewater treatment plants provide a pathway for ARGs and antibiotic resistant bacteria (ARB) to be released into natural water bodies. Research has indicated that conventional primary and secondary treatment systems can reduce ARGs/ARB to varying degrees. However, in developing/low-income countries, only 8-28% of wastewater is treated via conventional treatment processes, resulting in the environment being exposed to high levels of ARGs, ARB and pharmaceuticals in raw sewage. The use of constructed wetlands (CWs) has the potential to provide a low-cost solution for wastewater treatment, with respect to removal of nutrients, pathogens, ARB/ARGs either as a standalone treatment process or when integrated with conventional treatment systems. Recently, CWs have also been employed for the reduction of antibiotic residues, pharmaceuticals, and emerging contaminants. Given the benefits of ARG removal, low cost of construction, maintenance, energy requirement, and performance efficiencies, CWs offer a promising solution for developing/low-income countries. This review promotes a better understanding of the performance efficiency of treatment technologies (both conventional systems and CWs) for the reduction of antibiotics and ARGs/ARB from wastewater and explores workable alternatives.
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Affiliation(s)
- Moushumi Hazra
- Department of Hydrology, Indian Institute of Technology, Roorkee, Uttarakhand, India.
| | - Himanshu Joshi
- Department of Hydrology, Indian Institute of Technology, Roorkee, Uttarakhand, India
| | - John B Williams
- School of Civil Engineering and Surveying, University of Portsmouth, United Kingdom
| | - Joy E M Watts
- School of Biological Sciences, University of Portsmouth, United Kingdom
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10
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Kalinowska A, Pierpaoli M, Jankowska K, Fudala-Ksiazek S, Remiszewska-Skwarek A, Łuczkiewicz A. Insights into the microbial community of treated wastewater, its year-round variability and impact on the receiver, using cultivation, microscopy and amplicon-based methods. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 829:154630. [PMID: 35307432 DOI: 10.1016/j.scitotenv.2022.154630] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Revised: 02/21/2022] [Accepted: 03/13/2022] [Indexed: 06/14/2023]
Abstract
Apart from chemical constituents, wastewater treatment plant (WWTP) effluents also release microorganisms that can be important to the receiving water bodies either from a sanitary point of view, or taking to the account the biogeochemical potential of the recipients. However, little is known about the treated wastewater microbial community, its composition, seasonal changes, functions and fate in the waters of the receiver. Thus, this study presents a synergistic approach coupling new and traditional methods: analytical chemistry, classical microbiology (cultivation- and microscopy-based methods), as well as Next Generation Sequencing and a quantitative real-time polymerase chain reaction (qPCR). The results show that in terms of bacterial community composition, treated wastewater differed from the environmental samples, irrespectively if they were related or unrelated to the WWTP effluent discharge. The canonical correspondence analysis (CCA) taking into account chemical parameters and taxonomical biodiversity indirectly confirmed the seasonal deterioration of the treated wastewater quality as a result of temperature-driven change of activated sludge community structure and biomass washout (observed also by DAPI staining). Despite seasonal fluctuations of total suspended solids and inter-related parameters (such as COD, BOD, TN, TP), the treated wastewater quality remained within current discharge limits. It was due to treatment processes intensively adjusted by WWTP operators, particularly those necessary to maintain an appropriate rate of autotrophic processes of nitrification and to support biological phosphorus removal. This can explain the observed microbiome composition similarity among WWTP effluents at high taxonomic levels. Obtained data also suggest that besides wastewater treatment efficiency, WWTP effluents are still sources of both human-related microorganisms as well as bacteria equipped in genes involved in N-cycling. Their potential of participation in nutrients cycling in the receivers is widely unknown and require critical attention and better understanding.
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Affiliation(s)
- Agnieszka Kalinowska
- Department of Environmental Engineering Technology, Faculty of Civil and Environmental Engineering, Gdansk University of Technology, 11/12 Narutowicza St., Gdansk 80-233, Poland.
| | - Mattia Pierpaoli
- Department of Metrology and Optoelectronics, Faculty of Electronics, Telecommunications and Informatics, Gdansk University of Technology, 11/12 Narutowicza St., Gdansk 80-233, Poland.
| | - Katarzyna Jankowska
- Department of Environmental Engineering Technology, Faculty of Civil and Environmental Engineering, Gdansk University of Technology, 11/12 Narutowicza St., Gdansk 80-233, Poland.
| | - Sylwia Fudala-Ksiazek
- Department of Sanitary Engineering, Faculty of Civil and Environmental Engineering, Gdansk University of Technology, 11/12 Narutowicza St., Gdansk 80-233, Poland.
| | - Anna Remiszewska-Skwarek
- Department of Sanitary Engineering, Faculty of Civil and Environmental Engineering, Gdansk University of Technology, 11/12 Narutowicza St., Gdansk 80-233, Poland.
| | - Aneta Łuczkiewicz
- Department of Environmental Engineering Technology, Faculty of Civil and Environmental Engineering, Gdansk University of Technology, 11/12 Narutowicza St., Gdansk 80-233, Poland.
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Omatola CA, Olaniran AO. Epidemiological significance of the occurrence and persistence of rotaviruses in water and sewage: a critical review and proposal for routine microbiological monitoring. ENVIRONMENTAL SCIENCE. PROCESSES & IMPACTS 2022; 24:380-399. [PMID: 35174845 DOI: 10.1039/d1em00435b] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Globally, waterborne gastroenteritis attributable to rotaviruses is on the increase due to the rapid increase in population growth, poor socioeconomic conditions, and drastic changes in climatic conditions. The burden of diarrhea is quite alarming in developing nations where the majority of the populations still rely on untreated surface water that is usually polluted for their immediate water needs. Humans and animals of all ages are affected by rotaviruses. In humans, the preponderance of cases occurs in children under 5 years. Global efforts in advancing water/wastewater treatment technologies have not yet realized the objective of complete viral removal from wastewater. Most times, surface waters are impacted heavily by inadequately treated wastewater run-offs thereby exposing people or animals to preventable health risks. The relative stability of rotaviruses in aquatic matrices during wastewater treatment, poor correlation of bacteriological indicators with the presence of rotaviruses, and their infectiousness at a low dose informed the proposal for inclusion in the routine microbiological water screening panel. Environmental monitoring data have been shown to provide early warnings that can complement clinical data used to monitor the impact of current rotavirus vaccination in a community. This review was therefore undertaken to critically appraise rotavirus excretion and emission pathways, and the existence, viability and persistence in the receiving aquatic milieu. The efficiency of the current wastewater treatment modality for rotavirus removal, correlation of the current bacteriological water quality assessment strategy, public health risks and current laboratory methods for an epidemiological study were also discussed.
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Affiliation(s)
- Cornelius A Omatola
- Discipline of Microbiology, School of Life Sciences, College of Agriculture, Engineering and Science, University of KwaZulu-Natal (Westville Campus), Private Bag X54001, Durban 4000, Republic of South Africa.
| | - Ademola O Olaniran
- Discipline of Microbiology, School of Life Sciences, College of Agriculture, Engineering and Science, University of KwaZulu-Natal (Westville Campus), Private Bag X54001, Durban 4000, Republic of South Africa.
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12
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Medeiros RC, Sammarro Silva KJ, Daniel LA. Wastewater treatment performance in microbiological removal and (oo)cyst viability assessed comparatively to fluorescence decay. ENVIRONMENTAL TECHNOLOGY 2022; 43:962-970. [PMID: 32799634 DOI: 10.1080/09593330.2020.1811396] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2020] [Accepted: 08/10/2020] [Indexed: 06/11/2023]
Abstract
Municipal wastewater is a source of pathogenic protozoan (oo)cysts and may play a significant role in spreading waterborne diseases. This scenario becomes more critical as treated sewage from municipal wastewater treatment plants (WWTP) is discharged into springs, which are often used for water supply, irrigation, recreation and, further downstream, indirect potable reuse, quite common in Brazil. This study aimed to elucidate, regarding microbiological quality, the performance of a full-scale WWTP, consisting of preliminary treatment, upflow anaerobic sludge blanket (UASB) reactor, activated sludge system and ultraviolet (UV) radiation disinfection. Pathogenic protozoa (Giardia spp. cysts and Cryptosporidium spp. oocysts), as well as microbiological indicators (Escherichia coli and Clostridium perfringens), were evaluated in terms of their removal. In addition, (oo)cyst viability and fluorescence reduction were assessed. By using the data obtained from this research, the prevalence of infection estimated for the population served by the WWTP was between 7.4% and 14.8% for giardiasis, and between 0.055% and 0.11% for cryptosporidiosis.
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Affiliation(s)
- Raphael Corrêa Medeiros
- Department of Engineering and Environmental Technology, Federal University of Santa Maria - campus Frederico Westphalen, Rio Grande do Sul, Brazil
| | - Kamila Jessie Sammarro Silva
- Department of Hydraulics and Sanitation, São Carlos School of Engineering, University of São Paulo, São Paulo, Brazil
| | - Luiz Antonio Daniel
- Department of Hydraulics and Sanitation, São Carlos School of Engineering, University of São Paulo, São Paulo, Brazil
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13
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Chern EC, Wymer L, Brenner K, Oshima K, Haugland RA. Persistence of fecal indicator bacteria and associated genetic markers from wastewater treatment plant effluents in freshwater microcosms. JOURNAL OF WATER AND HEALTH 2022; 20:205-215. [PMID: 35100168 PMCID: PMC9000909 DOI: 10.2166/wh.2021.152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Limited information exists on the environmental persistence of genetic markers for fecal indicator bacteria (FIB) in treated wastewaters. Here, the decay rate constants of culturable cells and genetic markers for four diverse groups of FIBs, such as enterococci, Clostridium, Escherichia coli, and Bacteroides, were investigated in freshwater microcosms seeded with disinfected and non-disinfected secondary-treated wastewaters. Decay rate constants of genetic markers and culturable cells varied significantly among the different FIB groups. Water temperatures (winter vs. fall/spring/summer) significantly affected the decay of all genetic marker and cell types; however, genetic marker decay were not found to be significantly different in disinfected (chlorination/ultraviolet) and non-disinfected wastewater-seeded microcosms or, for example, lake- and river-receiving waters. No evidence was seen that decay rate constants of FIB genetic markers from treated wastewater were substantially different from those observed in similar, previously reported microcosm studies using raw sewage. Unexpected relationships between decay rate constants of genetic markers and culturable cells of Bacteroides were observed. Results suggest that decay rate constants of FIB genetic markers determined from other studies may be applicable to treated wastewaters. Results of this study should be informative for ongoing efforts to determine the persistence of FIB genetic markers relative to surviving pathogens after wastewater treatment.
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Affiliation(s)
- Eunice C Chern
- U.S. Environmental Protection Agency, Region 10 Laboratory, 7411 Beach Dr. E., Port Orchard, WA 98366, USA E-mail:
| | - Larry Wymer
- U.S. Environmental Protection Agency, Office of Research and Development, U.S. Environmental Protection Agency, 26 W. Martin Luther King Dr., Cincinnati, OH 45268, USA
| | - Kristen Brenner
- U.S. Environmental Protection Agency, Office of Research and Development, U.S. Environmental Protection Agency, 26 W. Martin Luther King Dr., Cincinnati, OH 45268, USA
| | - Kevin Oshima
- U.S. Environmental Protection Agency, Office of Research and Development, U.S. Environmental Protection Agency, 26 W. Martin Luther King Dr., Cincinnati, OH 45268, USA
| | - Richard A Haugland
- U.S. Environmental Protection Agency, Office of Research and Development, U.S. Environmental Protection Agency, 26 W. Martin Luther King Dr., Cincinnati, OH 45268, USA
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14
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Hamadieh Z, Hamilton KA, Silverman AI. Systematic review of the relative concentrations of noroviruses and fecal indicator bacteria in wastewater: considerations for use in quantitative microbial risk assessment. JOURNAL OF WATER AND HEALTH 2021; 19:918-932. [PMID: 34874900 PMCID: wh_2021_068 DOI: 10.2166/wh.2021.068] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Human noroviruses are a leading cause of food- and water-borne disease, which has led to an interest in quantifying norovirus health risks using quantitative microbial risk assessment (QMRA). Given the limited availability of quantitative norovirus data to input to QMRA models, some studies have applied a conversion factor to estimate norovirus exposure based on measured fecal indicator bacteria (FIB) concentrations. We conducted a review of peer-reviewed publications to identify the concentrations of noroviruses and FIB in raw, secondary-treated, and disinfected wastewater. A meta-analysis was performed to determine the ratios of norovirus-FIB pairs in each wastewater matrix and the variables that significantly impact these ratios. Norovirus-to-FIB ratios were found to be significantly impacted by the norovirus genotype, month of sample collection, geographic location, and the extent of wastewater treatment. Additionally, we evaluated the impact of using a FIB-to-virus conversion factor in QMRA and found that the choice of conversion ratio has a great impact on estimated health risks. For example, the use of a conversion ratio previously used in the World Health Organization Guidelines for the Safe Use of Wastewater, Excreta and Greywater predicted health risks that were significantly lower than those estimated with measured norovirus concentrations used as inputs. This work emphasizes the gold standard of using measured pathogen concentrations directly as inputs to exposure assessment in QMRA. While not encouraged, if one must use a FIB-to-virus conversion ratio to estimate norovirus dose, the ratio should be chosen carefully based on the target microorganisms (i.e., strain, genotype, or class), prevalence of disease, and extent of wastewater treatment.
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Affiliation(s)
- Zelfa Hamadieh
- Department of Civil and Urban Engineering, New York University Tandon School of Engineering, Brooklyn, NY, USA E-mail:
| | - Kerry A Hamilton
- School of Sustainable Engineering and the Built Environment, Arizona State University, Tempe, AZ, USA; The Biodesign Institute Center for Environmental Health Engineering, Arizona State University, Tempe, AZ, USA
| | - Andrea I Silverman
- Department of Civil and Urban Engineering, New York University Tandon School of Engineering, Brooklyn, NY, USA E-mail: ; School of Global Public Health, New York University, New York, NY, USA
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15
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Patel A, Arkatkar A, Singh S, Rabbani A, Solorza Medina JD, Ong ES, Habashy MM, Jadhav DA, Rene ER, Mungray AA, Mungray AK. Physico-chemical and biological treatment strategies for converting municipal wastewater and its residue to resources. CHEMOSPHERE 2021; 282:130881. [PMID: 34087557 DOI: 10.1016/j.chemosphere.2021.130881] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Revised: 05/03/2021] [Accepted: 05/09/2021] [Indexed: 06/12/2023]
Abstract
An increase in urbanization and industrialization has not only contributed to an improvement in the lifestyle of people, but it has also contributed to a surge in the generation of wastewater. To date, conventional physico-chemical and biological treatment methods are widely used for the treatment of wastewater. However, the efficient operation of these systems require substantial operation and maintenance costs, and the application of novel technologies for the treatment and disposal of sludge/residues. This review paper focuses on the application of different treatment options such as chemical, catalyst-based, thermochemical and biological processes for wastewater or sludge treatment and membrane-based technologies (i.e. pressure-driven and non-pressure driven) for the separation of the recovered products from wastewater and its residues. As evident from the literature, a wide variety of treatment and resource recovery options are possible, both from wastewater and its residues; however, the lack of planning and selecting the most appropriate design (treatment train) to scale up from pilot to the field scale has limited its practical application. The economic feasibility of the selected technologies was critically analyzed and the future research prospects of resource recovery from wastewater have been outlined in this review.
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Affiliation(s)
- Asfak Patel
- Department of Chemical Engineering, S. V. National Institute of Technology Surat, Ichchhanath Surat-Dumas Road, Keval Chowk, Surat, 395007, Gujarat, India
| | - Ambika Arkatkar
- Department of Chemical Engineering, S. V. National Institute of Technology Surat, Ichchhanath Surat-Dumas Road, Keval Chowk, Surat, 395007, Gujarat, India
| | - Srishti Singh
- Department of Water Supply, Sanitation and Environmental Engineering, IHE Delft Institute for Water Education, Westvest 7, P.O. Box 3015, 2601DA, Delft, the Netherlands
| | - Alija Rabbani
- Department of Water Supply, Sanitation and Environmental Engineering, IHE Delft Institute for Water Education, Westvest 7, P.O. Box 3015, 2601DA, Delft, the Netherlands
| | - Juan David Solorza Medina
- Department of Water Supply, Sanitation and Environmental Engineering, IHE Delft Institute for Water Education, Westvest 7, P.O. Box 3015, 2601DA, Delft, the Netherlands
| | - Ee Shen Ong
- Department of Water Supply, Sanitation and Environmental Engineering, IHE Delft Institute for Water Education, Westvest 7, P.O. Box 3015, 2601DA, Delft, the Netherlands
| | - Mahmoud M Habashy
- Department of Water Supply, Sanitation and Environmental Engineering, IHE Delft Institute for Water Education, Westvest 7, P.O. Box 3015, 2601DA, Delft, the Netherlands
| | - Dipak A Jadhav
- Department of Agricultural Engineering, Maharashtra Institute of Technology, Aurangabad 431010, Maharashtra, India
| | - Eldon R Rene
- Department of Water Supply, Sanitation and Environmental Engineering, IHE Delft Institute for Water Education, Westvest 7, P.O. Box 3015, 2601DA, Delft, the Netherlands
| | - Alka A Mungray
- Department of Chemical Engineering, S. V. National Institute of Technology Surat, Ichchhanath Surat-Dumas Road, Keval Chowk, Surat, 395007, Gujarat, India
| | - Arvind Kumar Mungray
- Department of Chemical Engineering, S. V. National Institute of Technology Surat, Ichchhanath Surat-Dumas Road, Keval Chowk, Surat, 395007, Gujarat, India.
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16
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Saba B, Hasan SW, Kjellerup BV, Christy AD. Capacity of existing wastewater treatment plants to treat SARS-CoV-2. A review. BIORESOURCE TECHNOLOGY REPORTS 2021; 15:100737. [PMID: 34179735 PMCID: PMC8216935 DOI: 10.1016/j.biteb.2021.100737] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/11/2021] [Revised: 06/12/2021] [Accepted: 06/12/2021] [Indexed: 12/16/2022]
Abstract
Water is one of many viral transmission routes, and the presence of Severe Acute Respiratory Syndrome Corona Virus 2 (SARS-CoV-2) in wastewater has brought attention to its treatment. SARS CoV-2 primarily transmits in the air but the persistence of the virus in the water possibly can serve as a secondary source even though current studies do not show this. In this paper, an evaluation of the current literature with regards to the treatment of SARS-CoV-2 in wastewater treatment plant (WWTP) effluents and biosolids is presented. Treatment efficiencies of WWTPs are compared for viral load reduction on the basis of publicly available data. The results of this evaluation indicate that existing WWTPs are effectively removing 1-6 log10 viable SARS-CoV-2. However, sludge and biosolids provide an umbrella of protection from treatment and inactivation to the virus. Hence, sludge treatment factors like high temperature, pH changes, and predatory microorganisms can effectively inactivate SARS-CoV-2.
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Affiliation(s)
- Beenish Saba
- Department of Food, Agricultural and Biological Engineering, The Ohio State University, 590 Woody Hayes Drive, Columbus, OH 43210, USA
- Department of Environmental Sciences, PMAS Arid Agriculture University Rawalpindi, 46300, Rawalpindi, Pakistan
| | - Shadi W Hasan
- Center for Membranes and Advanced Water Technology (CMAT), Department of Chemical Engineering, Khalifa University of Science and Technology, P.O. Box 127788, Abu Dhabi, United Arab Emirates
| | - Birthe V Kjellerup
- Department of Civil and Environmental Engineering, University of Maryland at College Park, College Park, MD, USA
| | - Ann D Christy
- Department of Food, Agricultural and Biological Engineering, The Ohio State University, 590 Woody Hayes Drive, Columbus, OH 43210, USA
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17
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Hata A, Shirasaka Y, Ihara M, Yamashita N, Tanaka H. Spatial and temporal distributions of enteric viruses and indicators in a lake receiving municipal wastewater treatment plant discharge. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 780:146607. [PMID: 33773350 DOI: 10.1016/j.scitotenv.2021.146607] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Revised: 03/16/2021] [Accepted: 03/16/2021] [Indexed: 06/12/2023]
Abstract
Although lake water can be used as a source of drinking water and recreational activities, there is a dearth of research on the occurrence and fate of enteric viruses. Over a period of 14 months at six points in 2014-2015, we conducted monthly monitoring of the virological water quality of a Japanese lake. The lake receives effluent from three surrounding wastewater treatment plants and retains water for about two weeks. These features allowed us to investigate the occurrence and fate of viruses in the lake environment. Human enteric viruses such as noroviruses and their indicators (pepper mild mottle virus and F-specific RNA bacteriophage [FRNAPH] genogroups) were quantified by PCR-based assays. Additionally, FRNAPH genogroups were quantified by infectivity-based assays to estimate the degree of virus inactivation. Pepper mild mottle virus, genogroup II (GII) norovirus, and GI-FRNAPH were identified in relatively high frequencies (positive in >40% out of 64 samples), with concentrations ranging from 1.3 × 101 to 2.9 × 104 copies/L. Human enteric viruses and some indicators were not detected and less prevalent, respectively, after April 2015. Principal component analysis revealed that the virological water quality changed gradually over time, but its differences between the sampling points were not apparent. FRNAPH genogroups were inactivated during the warm season (averaged water temperature of >20 °C) compared to the cool season (averaged water temperature of <20 °C), which may have been due to the more severe environmental stresses such as sunlight and water temperature. This suggests that the infection risk associated with the use of the lake water may have been overestimated by the gene quantification assay during the warm season.
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Affiliation(s)
- Akihiko Hata
- Department of Environmental and Civil Engineering, Faculty of Engineering, Toyama Prefectural University, 5180 Kurokawa, Imizu, Toyama 939-0398, Japan.
| | - Yuya Shirasaka
- Research Center for Environmental Quality Management, Graduate School of Engineering, Kyoto University, 1-2 Yumihama, Otsu, Shiga 520-0811, Japan
| | - Masaru Ihara
- Research Center for Environmental Quality Management, Graduate School of Engineering, Kyoto University, 1-2 Yumihama, Otsu, Shiga 520-0811, Japan
| | - Naoyuki Yamashita
- Course of Rural Engineering, Department of Science and Technology for Biological Resources and Environment, Faculty of Agriculture, Graduate School of Agriculture Ehime University, 3-5-7 Tarumi, Matsuyama, Ehime 790-8566, Japan
| | - Hiroaki Tanaka
- Research Center for Environmental Quality Management, Graduate School of Engineering, Kyoto University, 1-2 Yumihama, Otsu, Shiga 520-0811, Japan
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18
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Li X, Cheng Z, Dang C, Zhang M, Zheng Y. Metagenomic and viromic data mining reveals viral threats in biologically treated domestic wastewater. ENVIRONMENTAL SCIENCE AND ECOTECHNOLOGY 2021; 7:100105. [PMID: 36160698 PMCID: PMC9488056 DOI: 10.1016/j.ese.2021.100105] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2021] [Revised: 06/02/2021] [Accepted: 06/02/2021] [Indexed: 05/07/2023]
Abstract
Activated sludge (AS), a common biological secondary treatment process in wastewater treatment plants (WWTPs), is known to remove a large spectrum of microorganisms. Yet little is known about its effect on the entire viral community. After compiling 3 Tbp of next-generation sequencing (NGS) metagenomic/viromic datasets consisted of 119 sub-datasets of influent, effluent, and AS samples from 27 WWTPs, viral removal efficacy is evaluated through data mining. The normalized abundance of viruses suggests effluents exhibit the highest viral prevalence (3.21 ± 3.26%, n = 13) followed by the AS (0.48 ± 0.25%, n = 57) and influents (0.23 ± 0.17%, n = 17). In contrast, plasmids, representing genetic element of bacteria, show higher average prevalence (0.73 ± 0.82%, n = 17) in influents than those of the AS (0.63 ± 0.26%, n = 57) and effluents (0.35 ± 0.42%, n = 13). Furthermore, the abundance-occupancy analysis identifies 142 core phage viruses and 17 non-phages core viruses, including several pathogenic viruses in the AS virome. The persistent occurrence of pathogenic viruses, coupled with non-favorable virus removal by the AS treatment, reveals the hidden virus threats in biologically treated domestic wastewater. The mechanisms for why viruses persist and the possibility that WWTPs are potential hotspots for viral survival deserve attention.
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Affiliation(s)
- Xiang Li
- School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen, 518055, China
- State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China
- Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Zhanwen Cheng
- School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Chenyuan Dang
- School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Miao Zhang
- School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Yan Zheng
- School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen, 518055, China
- State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China
- Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen, 518055, China
- Shenzhen Key Laboratory of Marine Archaea Geo-Omics, Department of Ocean Science and Engineering, Southern University of Science and Technology, Shenzhen, 518055, China
- Corresponding author. School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen, 518055 China.
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19
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Pallares-Vega R, Hernandez Leal L, Fletcher BN, Vias-Torres E, van Loosdrecht MCM, Weissbrodt DG, Schmitt H. Annual dynamics of antimicrobials and resistance determinants in flocculent and aerobic granular sludge treatment systems. WATER RESEARCH 2021; 190:116752. [PMID: 33385875 DOI: 10.1016/j.watres.2020.116752] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Revised: 12/13/2020] [Accepted: 12/14/2020] [Indexed: 05/14/2023]
Abstract
The occurrence and removal patterns of 24 antimicrobial agents and antimicrobial resistant determinants namely 6 antibiotic resistance genes (ARGs) and 2 mobile genetic elements (MGEs), and the fecal indicator E. coli were investigated in three full-scale wastewater treatment plants. Their waterlines and biosolids lines (including secondary treatment based on both granular and activated sludge) were sampled monthly throughout one year. Samples were analyzed by means of LC-MS/MS, qPCR and cell enumeration, respectively. The influence of rainfall, temperature, and turbidity on the occurrence and removal of the aforementioned agents was assessed through statistical linear mixed models. Ten of the antimicrobial agents (macrolides, fluoroquinolones, tetracyclines, and sulfonamides) were commonly found in influent in concentrations of 0.1-2 µg L-1, and the predominant ARGs were ermB and sul1 (6.4 and 5.9 log10 mL-1 respectively). Warmer temperatures slightly reduced gene concentrations in influent whilst increasing that of E. coli and produced an uneven effect on the antimicrobial concentrations across plants. Rainfall diluted both E. coli (-0.25 logs, p < 0.001) and antimicrobials but not genes. The wastewater treatment reduced the absolute abundance of both genes (1.86 logs on average) and E. coli (2.31 logs on average). The antimicrobials agents were also partly removed, but 8 of them were still detectable after treatment, and 6 accumulated in the biosolids. ARGs were also found in biosolids with patterns resembling those of influent. No significant differences in the removal of antimicrobials, genes and E. coli were observed when comparing conventional activated sludge with aerobic granular sludge. Irrespective of the type of sludge treatment, the removal of genes was significantly reduced with increasing hydraulic loads caused by rainfall (-0.35 logs per ∆ average daily flow p < 0.01), and slightly decreased with increasing turbidity (-0.02 logs per ∆1 nephelometric turbidy unit p < 0.05) .
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Affiliation(s)
- Rebeca Pallares-Vega
- Wetsus, European Centre of Excellence for Sustainable Water Technology, Leeuwarden, Netherlands; Department of Biotechnology, Delft University of Technology, Delft, Netherlands
| | - Lucia Hernandez Leal
- Wetsus, European Centre of Excellence for Sustainable Water Technology, Leeuwarden, Netherlands
| | - Benjamin N Fletcher
- Wetsus, European Centre of Excellence for Sustainable Water Technology, Leeuwarden, Netherlands; Bournemouth University, Bournemouth, UK
| | - Eduardo Vias-Torres
- Wetsus, European Centre of Excellence for Sustainable Water Technology, Leeuwarden, Netherlands
| | | | - David G Weissbrodt
- Department of Biotechnology, Delft University of Technology, Delft, Netherlands
| | - Heike Schmitt
- Wetsus, European Centre of Excellence for Sustainable Water Technology, Leeuwarden, Netherlands; Institute for Risk Assessment Sciences, Utrecht University, Utrecht, Netherlands; RIVM, Centre for Infectious Disease Control, National Institute for Public Health and the Environment (RIVM), Bilthoven, Netherlands.
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20
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Mailler R, Mèche P, Rocher V. What removals of pathogen indicators can be expected within large-scale wastewater treatment facilities in the context of wastewater reuse in Paris conurbation? WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2021; 83:781-791. [PMID: 33617486 DOI: 10.2166/wst.2021.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The fate of pathogen indicators (Escherichia coli - EC, intestinal enterococci - IE, RNA-F bacteriophages and spores of sulfite reducing bacteria - SSR) was extensively studied in Parisian large-scale wastewater treatment plants (WWTPs), based on conventional activated sludge, biofiltration or membrane bioreactor (MBR) processes. Between 14 and 87 campaigns were performed between 2014 and 2018 in five WWTPs. High removals of 3 log for both EC and IE, and lower removals of 1-2 log for SSR and RNA-F bacteriophages, were observed in conventional activated sludge and biofiltration WWTPs. The MBR WWTP achieves notably greater removals of 4.5-5.5 log for faecal bacteria and 3-4 log for SSR and RNA-F bacteriophages. This WWTP is the only one already in compliance with reuse standards, the other ones being non-compliant because of SSR and RNA-F bacteriophages. The implementation of a micro-grain activated carbon process would increase the WWTP removals of 0.8 log for faecal bacteria, due to particles retention, with no significant effect on both other pathogens. Ozonation (0.9-1.3 g O3/g dissolved organic carbon) or performic acid (0.8-1.2 ppm) would have greater benefits with additional removals of 1.5-2.5 log for EC, 1-2 log for IE and 0.5-1 log for SSR and RNA-F bacteriophages. Correlations between pathogen indicator removals and initial concentrations were found, as well as a significant decrease of RNA-F bacteriophage concentrations in Parisian raw wastewater, below 2 log. Thus, RNA-F bacteriophages could be a real issue to evaluate the compliance of Parisian wastewater with reuse. The time evolution of removals demonstrated that SSR is the most problematic parameter regarding reuse in conventional activated sludge and biofiltration WWTPs, as its initial concentration is high (5 log) but removals insufficient (<2 log). In contrast, removals of RNA-F bacteriophages greater than 2 log can be obtained within WWTPs completed or not with a tertiary treatment when the initial concentration in raw wastewater is sufficient. Correlations were also found between the removals of pathogen indicators and the removals of physico-chemical parameters, but they are not good enough to allow performance predictions.
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Affiliation(s)
- R Mailler
- SIAAP (service public de l'assainissement francilien), Direction Innovation, 82 avenue Kléber 92700, Colombes, France E-mail:
| | - P Mèche
- SIAAP (service public de l'assainissement francilien), Direction Innovation, 82 avenue Kléber 92700, Colombes, France E-mail:
| | - V Rocher
- SIAAP (service public de l'assainissement francilien), Direction Innovation, 82 avenue Kléber 92700, Colombes, France E-mail:
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21
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Géba E, Rioult D, Palluel O, Dedourge-Geffard O, Betoulle S, Aubert D, Bigot-Clivot A. Resilience of Dreissena polymorpha in wastewater effluent: Use as a bioremediation tool? JOURNAL OF ENVIRONMENTAL MANAGEMENT 2021; 278:111513. [PMID: 33113398 DOI: 10.1016/j.jenvman.2020.111513] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Revised: 10/09/2020] [Accepted: 10/11/2020] [Indexed: 06/11/2023]
Abstract
Nowadays, it is necessary to improve the efficiency of wastewater treatment plant treatments. In this context the use of biofilter species, like Dreissena polymorpha, as a bioremediation tool in wastewater is increasingly highlighted. The innovative aim of this study is to evaluate the zebra mussel survival in the outlet channel of a conventional WWTP to use them as bioremediation tool. For this, mussels were transplanted in the outlet channel for 28 days and different biomarkers were monitored. D. polymorpha is able to maintain itself in good physiological conditions until 21 days, yet at 28 days a high mortality rate (24%), a decrease in filtration efficiency (8/15 mussels filtered and 17.0% of filtration rate) and antioxidant system activation (CAT activity et gpx gene expression increase) suggest an exhaustion. Some biomarkers suggested a hypoxic stress. Despite the unfavourable conditions, bivalves have bioaccumulated pathogenic protozoa (Toxoplasma gondii and Giardia duodenalis) during the exposure. Zebra mussel seems to be a promising tool for bioremediation in wastewater.
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Affiliation(s)
- Elodie Géba
- Université de Reims Champagne Ardenne, UMR-I 02 SEBIO (Stress Environnementaux et BIOsurveillance des Milieux Aquatiques), UFR Sciences Exactes et Naturelles, Campus Moulin de Housse, BP 1039, 51687, Reims cedex, 2, France; Université de Reims Champagne Ardenne, EA7510, ESCAPE (EpidémioSurveillance et CirculAtion des Parasites dans les Environnements) Université de Reims Champagne Ardenne, Faculté de Médecine, SFR Cap Santé Fed 4231, 51 Rue Cognacq Jay, 51096, Reims, France
| | - Damien Rioult
- Université de Reims Champagne Ardenne, UMR-I 02 SEBIO (Stress Environnementaux et BIOsurveillance des Milieux Aquatiques), UFR Sciences Exactes et Naturelles, Campus Moulin de Housse, BP 1039, 51687, Reims cedex, 2, France; Université de Reims Champagne Ardenne, Plateau Technique Mobile de cytométrie Environnementale MOBICYTE, Campus Moulin de la Housse, 51687, Reims, France
| | - Olivier Palluel
- Institut National de l'Environnement Industriel et des Risques (INERIS), UMR-I 02 SEBIO (Stress Environnementaux et BIOsurveillance des Milieux Aquatiques), Unité d'Ecotoxicologie in Vitro et in Vivo, Verneuil-en-Halatte, France
| | - Odile Dedourge-Geffard
- Université de Reims Champagne Ardenne, UMR-I 02 SEBIO (Stress Environnementaux et BIOsurveillance des Milieux Aquatiques), UFR Sciences Exactes et Naturelles, Campus Moulin de Housse, BP 1039, 51687, Reims cedex, 2, France
| | - Stéphane Betoulle
- Université de Reims Champagne Ardenne, UMR-I 02 SEBIO (Stress Environnementaux et BIOsurveillance des Milieux Aquatiques), UFR Sciences Exactes et Naturelles, Campus Moulin de Housse, BP 1039, 51687, Reims cedex, 2, France
| | - Dominique Aubert
- Université de Reims Champagne Ardenne, EA7510, ESCAPE (EpidémioSurveillance et CirculAtion des Parasites dans les Environnements) Université de Reims Champagne Ardenne, Faculté de Médecine, SFR Cap Santé Fed 4231, 51 Rue Cognacq Jay, 51096, Reims, France
| | - Aurélie Bigot-Clivot
- Université de Reims Champagne Ardenne, UMR-I 02 SEBIO (Stress Environnementaux et BIOsurveillance des Milieux Aquatiques), UFR Sciences Exactes et Naturelles, Campus Moulin de Housse, BP 1039, 51687, Reims cedex, 2, France.
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Janahi EM, Mustafa S, Parkar SFD, Naser HA, Eisa ZM. Detection of Enteric Viruses and Bacterial Indicators in a Sewage Treatment Center and Shallow Water Bay. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:ijerph17186483. [PMID: 32899918 PMCID: PMC7559856 DOI: 10.3390/ijerph17186483] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/25/2020] [Revised: 08/24/2020] [Accepted: 08/31/2020] [Indexed: 11/16/2022]
Abstract
The incidence of enteric viruses in treated wastewater and their potential release into the environment or use for agriculture are very critical matters in public health. In our study, PCR (polymerase chain reaction) analysis of enteric viruses was performed on 59 samples of influents and effluents collected from Tubli wastewater treatment plant (Water Pollution Control Center (WPCC)) and Tubli Bay, where the effluents were discharged, in Kingdom of Bahrain during two sampling periods. Four clinically essential waterborne enteric viruses were examined: enterovirus (EV), hepatitis A virus (HAV), astroviruses (AV), and rotaviruses (RV) and compared to standard bacterial and bacteriophages indicators of fecal pollution. Detection rates of EV, AV, HAV, and RV in the influent samples were 100%, 75%, 12.5%, and 12.5%, respectively, while 50% of the effluent samples from Tubli WPCC contained only EV RNA. None of the tested enteric viruses could be detected in any of the samples collected directly from Tubli Bay. Effluent samples from Tubli plant did not show significant seasonal differences. Since detection of enteric viruses genome does not necessarily indicate infectivity, the infectivity of these viruses was evaluated through isolation and growth of indictor bacteria and bacteriophages. High concentration of fecal bacteriological indicators was detected in all effluents samples (100%): 3.20 × 103 cfu/mL for E. coli, 1.32 × 103 cfu/mL for Salmonella spp., and 1.92 × 103 cfu/mL for Shigella spp. E. coli and Salmonella specific bacteriophages were also detected in the effluent samples in high titers. The combined results of PCR and bacterial enumeration point to a probable public health risk via the use of these wastewaters in agriculture or their discharge into the sea. Continuous surveillance of viral and bacterial prevalence and their resistance to sewage disinfection procedures could contribute to a better control of risks associated with the recycling of effluent wastewater and its release into the environment.
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Affiliation(s)
- Essam M. Janahi
- Department of Biology, College of Science, University of Bahrain, Sakhir 32038, Bahrain; (S.M.); (S.F.D.P.); (H.A.N.)
- Correspondence:
| | - Sakina Mustafa
- Department of Biology, College of Science, University of Bahrain, Sakhir 32038, Bahrain; (S.M.); (S.F.D.P.); (H.A.N.)
| | - Saba F. D. Parkar
- Department of Biology, College of Science, University of Bahrain, Sakhir 32038, Bahrain; (S.M.); (S.F.D.P.); (H.A.N.)
| | - Humood A. Naser
- Department of Biology, College of Science, University of Bahrain, Sakhir 32038, Bahrain; (S.M.); (S.F.D.P.); (H.A.N.)
| | - Zaki M. Eisa
- The National Center for Disease Prevention and Control, Jazan 82722-2476, Saudi Arabia;
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Tandukar S, Sherchan SP, Haramoto E. Reduction of Human Enteric and Indicator Viruses at a Wastewater Treatment Plant in Southern Louisiana, USA. FOOD AND ENVIRONMENTAL VIROLOGY 2020; 12:260-263. [PMID: 32613519 DOI: 10.1007/s12560-020-09433-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Accepted: 06/23/2020] [Indexed: 06/11/2023]
Abstract
This study assessed wastewater quality through the quantification of four human enteric viruses and the applicability of pepper mild mottle virus (PMMoV) and tobacco mosaic virus (TMV) as indicators of viral reduction during wastewater treatment. Thirty-three samples were collected from three steps of a wastewater treatment plant in Southern Louisiana, USA for a year between March 2017 and February 2018. Noroviruses of genogroup I were the most prevalent human enteric viruses in influent samples. The concentrations of PMMoV in influent samples (5.9 ± 0.7 log10 copies/L) and biologically treated effluent samples (5.9 ± 0.5 log10 copies/L) were significantly higher than those of TMV (P < 0.05), and the reduction ratio of PMMoV (1.0 ± 0.8 log10) was found comparable to those of TMV and Aichi virus 1. Because of the high prevalence, high correlations with human enteric viruses, and lower reduction ratios, PMMoV was deemed an appropriate indicator of human enteric viral reduction during wastewater treatment process.
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Affiliation(s)
- Sarmila Tandukar
- Interdisciplinary Center for River Basin Environment, University of Yamanashi, 4-3-11 Takeda, Kofu, Yamanashi, 400-8511, Japan
| | - Samendra P Sherchan
- Department of Environmental Health Sciences, Tulane University, 1440 Canal Street, Suite 2100, New Orleans, LA, 70112, USA
| | - Eiji Haramoto
- Interdisciplinary Center for River Basin Environment, University of Yamanashi, 4-3-11 Takeda, Kofu, Yamanashi, 400-8511, Japan.
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Goswami KP, Pugazhenthi G. Credibility of polymeric and ceramic membrane filtration in the removal of bacteria and virus from water: A review. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2020; 268:110583. [PMID: 32383664 DOI: 10.1016/j.jenvman.2020.110583] [Citation(s) in RCA: 50] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2020] [Revised: 03/27/2020] [Accepted: 04/07/2020] [Indexed: 05/24/2023]
Abstract
The prevalence of many waterborne diseases and the increased mortality rate starting from children to adult persons rises the need to purify water before consumption. Owing to the number of advantages associated with membrane filtration technologies, they are widely being implemented across the world for the production of pathogen free water. This article hence focuses on numerous such examples of using membrane technology in the production of drinking water. Membranes are even being coated with various materials to enhance their surface properties such as electrostatic and hydrophobic attraction capacity to aid for such separation. Various metal oxide coatings are seen to be gaining importance now-a-days and also, articles citing the use of silver coating are very large in number, owing to the excellent antipathogenic property shown by various silver compounds. It needs mention that examples have also been cited in this article where virus concentration was carried out with a purpose of producing different vaccines, virus adsorption in membrane and its subsequent elution (VIRADEL) being the most discussed one. In addition to these, description about the virus and bacteria quantification techniques are also mentioned in this article. The elaborated study of all these processes and the derived future prospects regarding the production of pathogen free water will certainly be helpful for the researchers working in this field, irrespective of the beginners or the experienced ones, to direct their research more innovatively.
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Affiliation(s)
- Kakali Priyam Goswami
- Department of Chemical Engineering, Indian Institute of Technology Guwahati, Guwahati, 781039, Assam, India
| | - G Pugazhenthi
- Department of Chemical Engineering, Indian Institute of Technology Guwahati, Guwahati, 781039, Assam, India.
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25
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Masciopinto C, Vurro M, Lorusso N, Santoro D, Haas CN. Application of QMRA to MAR operations for safe agricultural water reuses in coastal areas. WATER RESEARCH X 2020; 8:100062. [PMID: 32923999 PMCID: PMC7475278 DOI: 10.1016/j.wroa.2020.100062] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Revised: 07/27/2020] [Accepted: 08/14/2020] [Indexed: 06/11/2023]
Abstract
A pathogenic Escherichia coli (E.coli) O157:H7 and O26:H11 dose-response model was set up for a quantitative microbial risk assessment (QMRA) of the waterborne diseases associated with managed aquifer recharge (MAR) practices in semiarid regions. The MAR facility at Forcatella (Southern Italy) was selected for the QMRA application. The target counts of pathogens incidentally exposed to hosts by eating contaminated raw crops or while bathing at beaches of the coastal area were determined by applying the Monte Carlo Markov Chain (MCMC) Bayesian method to the water sampling results. The MCMC provided the most probable pathogen count reaching the target and allowed for the minimization of the number of water samplings, and hence, reducing the associated costs. The sampling stations along the coast were positioned based on the results of a groundwater flow and pathogen transport model, which highlighted the preferential flow pathways of the transported E. coli in the fractured coastal aquifer. QMRA indicated tolerable (<10-6 DALY) health risks for bathing at beaches and irrigation with wastewater, with 0.4 infectious diseases per year (11.4% probability of occurrence) associated with the reuse of reclaimed water via soil irrigation even though exceeding the E. coli regulation limit of 10 CFU/100 mL by five times. The results show negligible health risk and insignificant impacts on the coastal water quality due to pathogenic E. coli in the wastewater used for MAR. However, droughts and reclaimed water quality can be considered the main issues of MAR practices in semiarid regions suggesting additional reclaimed water treatments and further stress-tests via QMRAs by considering more persistent pathogens than E. coli.
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Affiliation(s)
- Costantino Masciopinto
- Consiglio Nazionale delle Ricerche, Istituto di Ricerca Sulle Acque, Via F. De Blasio 5, 70132, Bari, Italy
| | - Michele Vurro
- Consiglio Nazionale delle Ricerche, Istituto di Ricerca Sulle Acque, Via F. De Blasio 5, 70132, Bari, Italy
| | - Nicola Lorusso
- Consiglio Nazionale delle Ricerche, Istituto di Ricerca Sulle Acque, Via F. De Blasio 5, 70132, Bari, Italy
| | - Domenico Santoro
- Architectural and Environmental Engineering, Drexel University, Drexel, 3141 Chestnut Street, 251 Curtis Hall, Philadelphia, PA, 19104, USA
- USP Techonologies, 3020 Gore Rd, London, ON N5V 4T7, Canada
| | - Charles N. Haas
- Architectural and Environmental Engineering, Drexel University, Drexel, 3141 Chestnut Street, 251 Curtis Hall, Philadelphia, PA, 19104, USA
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26
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Membrane-Based Processes Used in Municipal Wastewater Treatment for Water Reuse: State-Of-The-Art and Performance Analysis. MEMBRANES 2020; 10:membranes10060131. [PMID: 32630495 PMCID: PMC7344726 DOI: 10.3390/membranes10060131] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 05/22/2020] [Revised: 06/19/2020] [Accepted: 06/21/2020] [Indexed: 12/11/2022]
Abstract
Wastewater reuse as a sustainable, reliable and energy recovery concept is a promising approach to alleviate worldwide water scarcity. However, the water reuse market needs to be developed with long-term efforts because only less than 4% of the total wastewater worldwide has been treated for water reuse at present. In addition, the reclaimed water should fulfill the criteria of health safety, appearance, environmental acceptance and economic feasibility based on their local water reuse guidelines. Moreover, municipal wastewater as an alternative water resource for non-potable or potable reuse, has been widely treated by various membrane-based treatment processes for reuse applications. By collecting lab-scale and pilot-scale reuse cases as much as possible, this review aims to provide a comprehensive summary of the membrane-based treatment processes, mainly focused on the hydraulic filtration performance, contaminants removal capacity, reuse purpose, fouling resistance potential, resource recovery and energy consumption. The advances and limitations of different membrane-based processes alone or coupled with other possible processes such as disinfection processes and advanced oxidation processes, are also highlighted. Challenges still facing membrane-based technologies for water reuse applications, including institutional barriers, financial allocation and public perception, are stated as areas in need of further research and development.
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27
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Metagenomic insights into virus removal performance of an algal-based wastewater treatment system utilizing Galdieria sulphuraria. ALGAL RES 2020. [DOI: 10.1016/j.algal.2020.101865] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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Ang WL, Mohammad AW, Johnson D, Hilal N. Unlocking the application potential of forward osmosis through integrated/hybrid process. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 706:136047. [PMID: 31864996 DOI: 10.1016/j.scitotenv.2019.136047] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2019] [Revised: 12/02/2019] [Accepted: 12/08/2019] [Indexed: 06/10/2023]
Abstract
Study of forward osmosis (FO) has been increasing steadily over recent years with applications mainly focusing on desalination and wastewater treatment processes. The working mechanism of FO lies in the natural movement of water between two streams with different osmotic pressure, which makes it useful in concentrating or diluting solutions. FO has rarely been operated as a stand-alone process. Instead, FO processes often appear in a hybrid or integrated form where FO is combined with other treatment technologies to achieve better overall process performance and cost savings. This article aims to provide a comprehensive review on the need for hybridization/integration for FO membrane processes, with emphasis given to process enhancement, draw solution regeneration, and pretreatment for FO fouling mitigation. In general, integrated/hybrid FO processes can reduce the membrane fouling propensity; prepare the solution suitable for subsequent value-added uses and production of renewable energy; lower the costs associated with energy consumption; enhance the quality of treated water; and enable the continuous operation of FO through the regeneration of draw solution. The future potential of FO lies in the success of how it can be hybridized or integrated with other technologies to minimize its own shortcomings, while enhancing the overall performance.
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Affiliation(s)
- Wei Lun Ang
- Centre for Sustainable Process Technology (CESPRO), Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor, Malaysia; Chemical Engineering Programme, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor, Malaysia.
| | - Abdul Wahab Mohammad
- Centre for Sustainable Process Technology (CESPRO), Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor, Malaysia; Chemical Engineering Programme, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor, Malaysia
| | - Daniel Johnson
- Centre for Water Advanced Technologies and Environmental Research (CWATER), College of Engineering, Swansea University, Swansea SA1 8EN, UK
| | - Nidal Hilal
- Centre for Water Advanced Technologies and Environmental Research (CWATER), College of Engineering, Swansea University, Swansea SA1 8EN, UK; NYUAD Water Research Center, New York University Abu Dhabi, Abu Dhabi, United Arab Emirates
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29
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Barrios-Hernández ML, Pronk M, Garcia H, Boersma A, Brdjanovic D, van Loosdrecht MC, Hooijmans CM. Removal of bacterial and viral indicator organisms in full-scale aerobic granular sludge and conventional activated sludge systems. WATER RESEARCH X 2020; 6:100040. [PMID: 31909394 PMCID: PMC6940708 DOI: 10.1016/j.wroa.2019.100040] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2019] [Revised: 12/19/2019] [Accepted: 12/24/2019] [Indexed: 05/07/2023]
Abstract
The aim of this study was to evaluate the effectiveness of the novel aerobic granular sludge (AGS) wastewater treatment technology in removing faecal indicator organisms (FIOs) compared to the conventional activated sludge (CAS) treatment system. The work was carried out at two full-scale wastewater treatment plants (WWTP) in the Netherlands, Vroomshoop and Garmerwolde. Both treatment plants have a CAS and AGS system operated in parallel. The parallel treatment lines are provided with the same influent wastewater. The concentrations of the measured FIOs in the influent of the two WWTPs were comparable with reported literature values as follows: F-specific RNA bacteriophages at 106 PFU/100 mL, and Escherichia coli (E. coli), Enterococci, and Thermotolerant coliforms (TtC) at 105 to 106 CFU/100 mL. Although both systems (CAS and AGS) are different in terms of design, operation, and microbial community, both systems showed similar FIOs removal efficiency. At the Vroomshoop WWTP, Log10 removals for F-specific RNA bacteriophages of 1.4 ± 0.5 and 1.3 ± 0.6 were obtained for the AGS and CAS systems, while at the Garmerwolde WWTP, Log10 removals for F-specific RNA bacteriophages of 1.9 ± 0.7 and 2.1 ± 0.7 were found for the AGS and CAS systems. Correspondingly, E. coli, Enterococci, and TtC Log10 removals of 1.7 ± 0.7 and 1.1 ± 0.7 were achieved for the AGS and CAS systems at Vroomshoop WWTP. For Garmerwolde WWTP Log10 removals of 2.3 ± 0.8 and 1.9 ± 0.7 for the AGS and CAS systems were found, respectively. The measured difference in removal rates between the plants was not significant. Physicochemical water quality parameters, such as the concentrations of organic matter, nutrients, and total suspended solids (TSS) were also determined. Overall, it was not possible to establish a direct correlation between the physicochemical parameters and the removal of FIOs for any of the treatment systems (CAS and AGS). Only the removal of TSS could be positively correlated to the E. coli removal for the AGS technology at the evaluated WWTPs.
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Affiliation(s)
- Mary Luz Barrios-Hernández
- Department of Environmental Engineering and Water Technology, IHE-Delft Institute for Water Education, P.O. Box 3015, 2601, DA, Delft, the Netherlands
- Department of Biotechnology, Delft University of Technology, Van der Maasweg 9, 2629, HZ, Delft, the Netherlands
- Corresponding author. Department of Biotechnology, Delft University of Technology, Van der Maasweg 9, 2629, HZ, Delft, the Netherlands.
| | - Mario Pronk
- Department of Biotechnology, Delft University of Technology, Van der Maasweg 9, 2629, HZ, Delft, the Netherlands
- Royal HaskoningDHV B.V., P.O Box 1132, 3800, BC, Amersfoort, the Netherlands
| | - Hector Garcia
- Department of Environmental Engineering and Water Technology, IHE-Delft Institute for Water Education, P.O. Box 3015, 2601, DA, Delft, the Netherlands
| | - Arne Boersma
- Royal HaskoningDHV B.V., P.O Box 1132, 3800, BC, Amersfoort, the Netherlands
| | - Damir Brdjanovic
- Department of Environmental Engineering and Water Technology, IHE-Delft Institute for Water Education, P.O. Box 3015, 2601, DA, Delft, the Netherlands
- Department of Biotechnology, Delft University of Technology, Van der Maasweg 9, 2629, HZ, Delft, the Netherlands
| | - Mark C.M. van Loosdrecht
- Department of Biotechnology, Delft University of Technology, Van der Maasweg 9, 2629, HZ, Delft, the Netherlands
| | - Christine M. Hooijmans
- Department of Environmental Engineering and Water Technology, IHE-Delft Institute for Water Education, P.O. Box 3015, 2601, DA, Delft, the Netherlands
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Tolouei S, Autixier L, Taghipour M, Burnet JB, Bonsteel J, Duy SV, Sauvé S, Prévost M, Dorner S. Precipitation effects on parasite, indicator bacteria, and wastewater micropollutant loads from a water resource recovery facility influent and effluent. JOURNAL OF WATER AND HEALTH 2019; 17:701-716. [PMID: 31638022 DOI: 10.2166/wh.2019.054] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The variability of fecal microorganisms and wastewater micropollutants (WWMPs) loads in relation to influent flow rates was evaluated for a water resource recovery facility (WRRF) in support of a vulnerability assessment of a drinking water source. Incomplete treatment and bypass discharges often occur following intense precipitation events that represent conditions that deviate from normal operation. Parasites, fecal indicator bacteria, and WWMPs concentrations and flow rate were measured at the WRRF influent and effluent during dry and wet weather periods. Influent concentrations were measured to characterize potential bypass concentrations that occur during wet weather. Maximum influent Giardia and C. perfringens loads and maximum effluent Escherichia coli and C. perfringens loads were observed during wet weather. Influent median loads of Cryptosporidium and Giardia were 6.8 log oocysts/day and 7.9 log cysts/day per 1,000 people. Effluent median loads were 3.9 log oocysts/day and 6.3 log cysts/day per 1,000 people. High loads of microbial contaminants can occur during WRRF bypasses following wet weather and increase with increasing flow rates; thus, short-term infrequent events such as bypasses should be considered in vulnerability assessments of drinking water sources in addition to the increased effluent loads during normal operation following wet weather.
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Affiliation(s)
- Samira Tolouei
- Canada Research Chair on the Dynamics of Microbial Contaminants in Source Waters, Polytechnique Montréal, Civil, Geological and Mining Engineering Department, Station Centre-Ville, P.O. Box 6079, Montréal, Quebec, Canada H3C 3A7 E-mail: ; NSERC Industrial Chair on Drinking Water, Polytechnique Montréal, Civil, Geological and Mining Engineering Department, Station Centre-Ville, P.O. Box 6079, Montréal, Quebec, Canada H3C 3A7
| | - Laurène Autixier
- Canada Research Chair on the Dynamics of Microbial Contaminants in Source Waters, Polytechnique Montréal, Civil, Geological and Mining Engineering Department, Station Centre-Ville, P.O. Box 6079, Montréal, Quebec, Canada H3C 3A7 E-mail:
| | - Milad Taghipour
- Canada Research Chair on the Dynamics of Microbial Contaminants in Source Waters, Polytechnique Montréal, Civil, Geological and Mining Engineering Department, Station Centre-Ville, P.O. Box 6079, Montréal, Quebec, Canada H3C 3A7 E-mail:
| | - Jean-Baptiste Burnet
- Canada Research Chair on the Dynamics of Microbial Contaminants in Source Waters, Polytechnique Montréal, Civil, Geological and Mining Engineering Department, Station Centre-Ville, P.O. Box 6079, Montréal, Quebec, Canada H3C 3A7 E-mail: ; NSERC Industrial Chair on Drinking Water, Polytechnique Montréal, Civil, Geological and Mining Engineering Department, Station Centre-Ville, P.O. Box 6079, Montréal, Quebec, Canada H3C 3A7
| | - Jane Bonsteel
- Peel Region, 10 Peel Centre Dr., Brampton, ON, Canada L6T 4B9
| | - Sung Vo Duy
- Chemistry Department, Université de Montréal, C.P. 6128, Centre-Ville, Montréal, QC, Canada H3C 3J7
| | - Sébastien Sauvé
- Chemistry Department, Université de Montréal, C.P. 6128, Centre-Ville, Montréal, QC, Canada H3C 3J7
| | - Michèle Prévost
- NSERC Industrial Chair on Drinking Water, Polytechnique Montréal, Civil, Geological and Mining Engineering Department, Station Centre-Ville, P.O. Box 6079, Montréal, Quebec, Canada H3C 3A7
| | - Sarah Dorner
- Canada Research Chair on the Dynamics of Microbial Contaminants in Source Waters, Polytechnique Montréal, Civil, Geological and Mining Engineering Department, Station Centre-Ville, P.O. Box 6079, Montréal, Quebec, Canada H3C 3A7 E-mail:
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Fecal Source Tracking in A Wastewater Treatment and Reclamation System Using Multiple Waterborne Gastroenteritis Viruses. Pathogens 2019; 8:pathogens8040170. [PMID: 31574994 PMCID: PMC6963801 DOI: 10.3390/pathogens8040170] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2019] [Revised: 09/26/2019] [Accepted: 09/27/2019] [Indexed: 01/22/2023] Open
Abstract
Gastroenteritis viruses in wastewater reclamation systems can pose a major threat to public health. In this study, multiple gastroenteritis viruses were detected from wastewater to estimate the viral contamination sources in a wastewater treatment and reclamation system installed in a suburb of Xi'an city, China. Reverse transcription plus nested or semi-nested PCR, followed by sequencing and phylogenetic analysis, were used for detection and genotyping of noroviruses and rotaviruses. As a result, 91.7% (22/24) of raw sewage samples, 70.8% (17/24) of the wastewater samples treated by anaerobic/anoxic/oxic (A2O) process and 62.5% (15/24) of lake water samples were positive for at least one of target gastroenteritis viruses while all samples collected from membrane bioreactor effluent after free chlorine disinfection were negative. Sequence analyses of the PCR products revealed that epidemiologically minor strains of norovirus GI (GI/14) and GII (GII/13) were frequently detected in the system. Considering virus concentration in the disinfected MBR effluent which is used as the source of lake water is below the detection limit, these results indicate that artificial lake may be contaminated from sources other than the wastewater reclamation system, which may include aerosols, and there is a possible norovirus infection risk by exposure through reclaimed water usage and by onshore winds transporting aerosols containing norovirus.
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Dissemination prevention of antibiotic resistant and facultative pathogenic bacteria by ultrafiltration and ozone treatment at an urban wastewater treatment plant. Sci Rep 2019; 9:12843. [PMID: 31492933 PMCID: PMC6731226 DOI: 10.1038/s41598-019-49263-1] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2019] [Accepted: 08/22/2019] [Indexed: 11/10/2022] Open
Abstract
Conventional wastewater treatment is not sufficient for the removal of hygienically relevant bacteria and achieves only limited reductions. This study focuses on the reduction efficiencies of two semi-industrial ultrafiltration units operating at a large scale municipal wastewater treatment plant. In total, 7 clinically relevant antibiotic resistance genes, together with 3 taxonomic gene markers targeting specific facultative pathogenic bacteria were analysed via qPCR analyses before and after advanced treatment. In parallel with membrane technologies, an ozone treatment (1 g ozone/g DOC) was performed for comparison of the different reduction efficiencies. Both ultrafiltration units showed increased reduction efficiencies for facultative pathogenic bacteria and antibiotic resistance genes of up to 6 log units, resulting mostly in a strong reduction of the bacterial targets. In comparison, the ozone treatment showed some reduction efficiency, but was less effective compared with ultrafiltration due to low ozone dosages frequently used for micro-pollutant removal at municipal wastewater treatment plants. Additionally, metagenome analyses demonstrated the accumulation of facultative pathogenic bacteria, antibiotic resistance genes, virulence factor genes, and metabolic gene targets in the back flush retentate of the membranes, which opens further questions about retentate fluid material handling at urban wastewater treatment plants.
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Lee S, Tasaki S, Hata A, Yamashita N, Tanaka H. Evaluation of virus reduction at a large-scale wastewater reclamation plant by detection of indigenous F-specific RNA bacteriophage genotypes. ENVIRONMENTAL TECHNOLOGY 2019; 40:2527-2537. [PMID: 29471753 DOI: 10.1080/09593330.2018.1444675] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2017] [Accepted: 02/21/2018] [Indexed: 06/08/2023]
Abstract
Evaluating the reduction of virus load in water reclamation plants is important to ensuring the hygienic safety of the reclaimed water. A virus-spiking test is usually used to estimate virus reduction but is not practicable at large-scale plants. Thus, we evaluated virus reduction by ultrafiltration (UF) plus ultraviolet (UV) irradiation at a large-scale reclamation plant (1000 m3/d) by quantifying indigenous F-specific RNA bacteriophages (FRNAPHs). To detect the infectious FRNAPH, we used both plaque assay and integrated culture-reverse-transcription polymerase chain reaction combined with the most probable number assay, which can detect infectious FRNAPH genotypes. For comparison, we determined reductions of indigenous FRNAPHs and spiked MS2 at a small-scale pilot plant (10 m3/d) at the same time. Reductions by UF were not significantly different among the bacteriophages at pilot plants. This result suggests that indigenous bacteriophages could be used for evaluating virus reduction by UF at large-scale plants. Indigenous Genotype I (GI) FRNAPH showed the highest UV resistance, followed by GII, GIII, and GIV. The resistance of GI-FRNAPH was equivalent to that of spiked MS2. The reduction of the total infectious FRNAPHs determined by plaque assay was affected by the predominant FRNAPH genotype, presumably because of their different UV resistances. Our results reveal that indigenous GI-FRNAPH can be a good alternative indicator to spiked MS2 in view of virus reduction during water reclamation. The reclaimed water from our large-scale reclamation plant could be used for irrigation because the expected reduction (6.3 log10) of indigenous GI-FRNAPH achieved the Title 22 (>5 log10).
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Affiliation(s)
- Suntae Lee
- a Research Center for Environmental Quality Management, Graduate School of Engineering, Kyoto University , Otsu , Japan
| | - Shota Tasaki
- a Research Center for Environmental Quality Management, Graduate School of Engineering, Kyoto University , Otsu , Japan
| | - Akihiko Hata
- a Research Center for Environmental Quality Management, Graduate School of Engineering, Kyoto University , Otsu , Japan
| | - Naoyuki Yamashita
- a Research Center for Environmental Quality Management, Graduate School of Engineering, Kyoto University , Otsu , Japan
| | - Hiroaki Tanaka
- a Research Center for Environmental Quality Management, Graduate School of Engineering, Kyoto University , Otsu , Japan
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Gonzales-Gustavson E, Rusiñol M, Medema G, Calvo M, Girones R. Quantitative risk assessment of norovirus and adenovirus for the use of reclaimed water to irrigate lettuce in Catalonia. WATER RESEARCH 2019; 153:91-99. [PMID: 30703677 DOI: 10.1016/j.watres.2018.12.070] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2018] [Revised: 09/22/2018] [Accepted: 12/31/2018] [Indexed: 05/21/2023]
Abstract
Wastewater is an important resource in water-scarce regions of the world, and its use in agriculture requires the guarantee of acceptable public health risks. The use of fecal indicator bacteria to evaluate safety does not represent viruses, the main potential health hazards. Viral pathogens could complement the use of fecal indicator bacteria in the evaluation of water quality. In this study, we characterized the concentration and removal of human adenovirus (HAdV) and norovirus genogroup II (NoV GII), highly abundant and important viral pathogens found in wastewater, in two wastewater treatment plants (WWTPs) that use different tertiary treatments (constructed wetland vs conventional UV, chlorination and Actiflo® treatments) for a year in Catalonia. The main objective of this study was to develop a Quantitative Microbial Risk Assessment for viral gastroenteritis caused by norovirus GII and adenovirus, associated with the ingestion of lettuce irrigated with tertiary effluents from these WWTPs. The results show that the disease burden of NoV GII and HAdV for the consumption of lettuce irrigated with tertiary effluent from either WWTP was higher than the WHO recommendation of 10-6 DALYs for both viruses. The WWTP with constructed wetland showed a higher viral reduction on average (3.9 and 2.8 logs for NoV GII and HAdV, respectively) than conventional treatment (1.9 and 2.5 logs) but a higher variability than the conventional WWTP. Sensitivity analysis demonstrated that the input parameters used to estimate the viral reduction by treatment and viral concentrations accounted for much of the model output variability. The estimated reductions required to reach the WHO recommended levels in tertiary effluent are influenced by the characteristics of the treatments developed in the WWTPs, and additional average reductions are necessary (in WWTP with a constructed wetland: A total of 6.7 and 5.1 logs for NoV GII and HAdV, respectively; and in the more conventional treatment: 7 and 5.6 logs). This recommendation would be achieved with an average quantification of 0.5 genome copies per 100 mL in reclaimed water for both viruses. The results suggest that the analyzed reclaimed water would require additional treatments to achieve acceptable risk in the irrigation of vegetables with reclaimed water.
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Affiliation(s)
- Eloy Gonzales-Gustavson
- Laboratory of Virus Contaminants of Water and Food, Section of Microbiology, Virology and Biotechnology, Department of Genetics, Microbiology and Statistics, Faculty of Biology, University of Barcelona, Avinguda Diagonal 643, 08028, Barcelona, Catalonia, Spain; Tropical and Highlands Veterinary Research Institute, School of Veterinary Medicine, San Marcos University, Carretera Central s/n, El Mantaro, Peru.
| | - Marta Rusiñol
- Laboratory of Virus Contaminants of Water and Food, Section of Microbiology, Virology and Biotechnology, Department of Genetics, Microbiology and Statistics, Faculty of Biology, University of Barcelona, Avinguda Diagonal 643, 08028, Barcelona, Catalonia, Spain.
| | - Gertjan Medema
- KWR Watercycle Research Institute, P.O. Box 1072, 3430, BB Nieuwegein, the Netherlands; The Netherlands and Delft University of Technology, the Netherlands.
| | - Miquel Calvo
- Section of Statistics, Department of Genetics, Microbiology and Statistics, Faculty of Biology, University of Barcelona, Avinguda Diagonal 643, 08028, Barcelona, Catalonia, Spain.
| | - Rosina Girones
- Laboratory of Virus Contaminants of Water and Food, Section of Microbiology, Virology and Biotechnology, Department of Genetics, Microbiology and Statistics, Faculty of Biology, University of Barcelona, Avinguda Diagonal 643, 08028, Barcelona, Catalonia, Spain.
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Ng C, Tan B, Jiang XT, Gu X, Chen H, Schmitz BW, Haller L, Charles FR, Zhang T, Gin K. Metagenomic and Resistome Analysis of a Full-Scale Municipal Wastewater Treatment Plant in Singapore Containing Membrane Bioreactors. Front Microbiol 2019; 10:172. [PMID: 30833934 PMCID: PMC6387931 DOI: 10.3389/fmicb.2019.00172] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2018] [Accepted: 01/22/2019] [Indexed: 11/23/2022] Open
Abstract
Reclaimed water provides a water supply alternative to address problems of scarcity in urbanized cities with high living densities and limited natural water resources. In this study, wastewater metagenomes from 6 stages of a wastewater treatment plant (WWTP) integrating conventional and membrane bioreactor (MBR) treatment were evaluated for diversity of antibiotic resistance genes (ARGs) and bacteria, and relative abundance of class 1 integron integrases (intl1). ARGs confering resistance to 12 classes of antibiotics (ARG types) persisted through the treatment stages, which included genes that confer resistance to aminoglycoside [aadA, aph(6)-I, aph(3')-I, aac(6')-I, aac(6')-II, ant(2″)-I], beta-lactams [class A, class C, class D beta-lactamases (bla OXA)], chloramphenicol (acetyltransferase, exporters, floR, cmIA), fosmidomycin (rosAB), macrolide-lincosamide-streptogramin (macAB, ereA, ermFB), multidrug resistance (subunits of transporters), polymyxin (arnA), quinolone (qnrS), rifamycin (arr), sulfonamide (sul1, sul2), and tetracycline (tetM, tetG, tetE, tet36, tet39, tetR, tet43, tetQ, tetX). Although the ARG subtypes in sludge and MBR effluents reduced in diversity relative to the influent, clinically relevant beta lactamases (i.e., bla KPC, bla OXA) were detected, casting light on other potential point sources of ARG dissemination within the wastewater treatment process. To gain a deeper insight into the types of bacteria that may survive the MBR removal process, genome bins were recovered from metagenomic data of MBR effluents. A total of 101 close to complete draft genomes were assembled and annotated to reveal a variety of bacteria bearing metal resistance genes and ARGs in the MBR effluent. Three bins in particular were affiliated to Mycobacterium smegmatis, Acinetobacter Iwoffii, and Flavobacterium psychrophila, and carried aquired ARGs aac(2')-Ib, bla OXA-278, and tet36 respectively. In terms of indicator organisms, cumulative log removal values (LRV) of Escherichia coli, Enterococci, and P. aeruginosa from influent to conventional treated effluent was lower (0-2.4), compared to MBR effluent (5.3-7.4). We conclude that MBR is an effective treatment method for reducing fecal indicators and ARGs; however, incomplete removal of P. aeruginosa in MBR treated effluents (<8 MPN/100 mL) and the presence of ARGs and intl1 underscores the need to establish if further treatment should be applied prior to reuse.
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Affiliation(s)
- Charmaine Ng
- Department of Surgery, National University of Singapore, Singapore, Singapore
| | - Boonfei Tan
- Department of Biological Sciences, University of Alberta, Edmonton, AB, Canada
| | - Xiao-Tao Jiang
- Environmental Biotechnology Lab, Department of Civil and Environmental Engineering, The University of Hong Kong, Pokfulam, Hong Kong
| | - Xiaoqiong Gu
- Department of Civil and Environmental Engineering, National University of Singapore, Singapore, Singapore
| | - Hongjie Chen
- Department of Civil and Environmental Engineering, National University of Singapore, Singapore, Singapore
| | - Bradley William Schmitz
- JHU/Stantec Alliance, Department of Environmental Health and Engineering, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD, United States
| | - Laurence Haller
- Department of Civil and Environmental Engineering, National University of Singapore, Singapore, Singapore
| | - Francis Rathinam Charles
- Department of Civil and Environmental Engineering, National University of Singapore, Singapore, Singapore
| | - Tong Zhang
- Environmental Biotechnology Lab, Department of Civil and Environmental Engineering, The University of Hong Kong, Pokfulam, Hong Kong
| | - Karina Gin
- Department of Civil and Environmental Engineering, National University of Singapore, Singapore, Singapore
- NUS Environmental Research Institute, Singapore, Singapore
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Tolouei S, Burnet JB, Autixier L, Taghipour M, Bonsteel J, Duy SV, Sauvé S, Prévost M, Dorner S. Temporal variability of parasites, bacterial indicators, and wastewater micropollutants in a water resource recovery facility under various weather conditions. WATER RESEARCH 2019; 148:446-458. [PMID: 30408731 DOI: 10.1016/j.watres.2018.10.068] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2018] [Revised: 10/22/2018] [Accepted: 10/24/2018] [Indexed: 06/08/2023]
Abstract
Wastewater discharges lead to the deterioration of receiving waters through treated effluents and by-passes, combined and sanitary sewer overflows, and cross-connections to storm sewers. The influence of weather conditions on fecal indicator bacteria, pathogens and wastewater micropollutants on raw and treated sewage concentrations has not been extensively characterized. However, such data are needed to understand the effects of by-pass discharges and incomplete treatment on receiving waters. A water resource recovery facility was monitored for pathogenic parasites (Cryptosporidium oocysts, Giardia cysts), fecal indicator bacteria (Escherichia coli, Clostridium perfringens), and wastewater micropollutants (caffeine, carbamazepine, 2-hydroxycarbamazepine, acesulfame, sucralose, and aspartame) during 6 events under different weather conditions (snowmelt and trace to 32 mm 2-day cumulative precipitation). Greater intra- and inter-event variability was observed for Giardia, E. coli and C. perfringens than for studied WWMPs. Even with the addition of inflow and infiltration, daily variations dominated concentration trends. Thus, afternoon and early evening were identified as critical times with regards to high concentrations and flows for potential by-pass discharges. Peak concentrations of Giardia were observed during the June wet weather event (1010 cysts/L), with the highest flowrates relative to the mean monthly flowrate. Overall, Giardia, E. coli and C. perfringens concentrations were positively correlated with flowrate (R > 0.32, p < 0.05). In raw sewage samples collected under high precipitation conditions, caffeine, carbamazepine and its metabolite 2-OH-carbamazepine were significantly correlated (p < 0.05) with Giardia, E. coli, and C. perfringens demonstrating that they are useful markers for untreated sewage discharges. Data from the study are needed for estimating peak concentrations discharged from wastewater sources in relation to precipitation or snowmelt events.
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Affiliation(s)
- Samira Tolouei
- Canada Research Chair in Source Water Protection, Polytechnique Montréal, Civil, Geological and Mining Engineering Department, P.O. Box 6079, Station Centre-Ville, Montréal, QC, H3C 3A7, Canada; NSERC Industrial Chair on Drinking Water, Polytechnique Montréal, Civil, Geological and Mining Engineering Department, P.O. Box 6079, Station Centre-Ville, Montréal, QC, H3C 3A7, Canada.
| | - Jean-Baptiste Burnet
- Canada Research Chair in Source Water Protection, Polytechnique Montréal, Civil, Geological and Mining Engineering Department, P.O. Box 6079, Station Centre-Ville, Montréal, QC, H3C 3A7, Canada; NSERC Industrial Chair on Drinking Water, Polytechnique Montréal, Civil, Geological and Mining Engineering Department, P.O. Box 6079, Station Centre-Ville, Montréal, QC, H3C 3A7, Canada
| | - Laurène Autixier
- Canada Research Chair in Source Water Protection, Polytechnique Montréal, Civil, Geological and Mining Engineering Department, P.O. Box 6079, Station Centre-Ville, Montréal, QC, H3C 3A7, Canada
| | - Milad Taghipour
- Canada Research Chair in Source Water Protection, Polytechnique Montréal, Civil, Geological and Mining Engineering Department, P.O. Box 6079, Station Centre-Ville, Montréal, QC, H3C 3A7, Canada
| | - Jane Bonsteel
- Peel Region, 10 Peel Centre Dr, Brampton, L6T 4B9, ON, Canada
| | - Sung Vo Duy
- Chemistry Department, University of Montréal, C.P. 6128, Centre-ville, Montréal, H3C 3J7, QC, Canada
| | - Sébastien Sauvé
- Chemistry Department, University of Montréal, C.P. 6128, Centre-ville, Montréal, H3C 3J7, QC, Canada
| | - Michéle Prévost
- NSERC Industrial Chair on Drinking Water, Polytechnique Montréal, Civil, Geological and Mining Engineering Department, P.O. Box 6079, Station Centre-Ville, Montréal, QC, H3C 3A7, Canada
| | - Sarah Dorner
- Canada Research Chair in Source Water Protection, Polytechnique Montréal, Civil, Geological and Mining Engineering Department, P.O. Box 6079, Station Centre-Ville, Montréal, QC, H3C 3A7, Canada
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Wang H, Wang X, Meng F, Li X, Ren Y, She Q. Effect of driving force on the performance of anaerobic osmotic membrane bioreactors: New insight into enhancing water flux of FO membrane via controlling driving force in a two-stage pattern. J Memb Sci 2019. [DOI: 10.1016/j.memsci.2018.10.010] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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38
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Le TH, Ng C, Tran NH, Chen H, Gin KYH. Removal of antibiotic residues, antibiotic resistant bacteria and antibiotic resistance genes in municipal wastewater by membrane bioreactor systems. WATER RESEARCH 2018; 145:498-508. [PMID: 30193193 DOI: 10.1016/j.watres.2018.08.060] [Citation(s) in RCA: 154] [Impact Index Per Article: 25.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2018] [Revised: 08/26/2018] [Accepted: 08/27/2018] [Indexed: 05/22/2023]
Abstract
Antibiotic residues, antibiotic resistant bacteria (ARB) and antibiotic resistance genes (ARGs) are considered new classes of water contaminants due to their potential adverse effects on aquatic ecosystems and human health. This paper provides comprehensive data on the occurrences of 19 antibiotics, bacteria resistant to 10 antibiotics, and 15 ARGs in raw influent and different treatment stages of conventional activated sludge (CAS) and membrane bioreactor (MBR) systems. Seventeen out of the 19 target antibiotics were detected in raw influent with concentrations of up to ten micrograms per liter. Concentrations of antibiotics measured in the secondary effluent were much lower compared to those in the raw influent. Among the antibiotics, amoxicillin, azithromycin, ciprofloxacin, chloramphenicol, meropenem, minocycline, oxytetracycline, sulfamethazine and vancomycin had highest removal by CAS or MBR systems with median removal efficiency (RE) > 70%, while trimethoprim and lincomycin were recalcitrant in the CAS system with median RE <50%. Similarly, the target ARB and ARGs were omnipresent in the raw influent samples with average concentrations as high as 2.6 × 106 CFU/mL and 2.0 × 107 gene copies/mL, respectively. The concentrations of ARB in secondary effluent of the CAS system declined relative to the raw influent (i.e. lower than raw influent by 2-3 orders of magnitude) and no ARB were detected in the MF permeate of the MBR system. For ARGs, their concentrations in secondary effluent/MF permeate ranged from below method quantification limit (<MQL) to 104 gene copies/mL. It is noteworthy that several ARGs, i.e. blaKPC, blaNDM, blaSHV, ermB, intI1, sul1 and tetO, were still found in the MF permeate of the MBR system at average concentrations up to 103 copies/mL. In conclusion, MBR outperformed CAS in the elimination of ARB, ARGs and most target antibiotics.
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Affiliation(s)
- Thai-Hoang Le
- Department of Environmental Engineering, International University, Vietnam National University, Ho Chi Minh City, Vietnam; NUS Environmental Research Institute (NERI), National University of Singapore, Singapore, T-Lab Building (# 02-01), 5A Engineering Drive 1, 117411, Singapore
| | - Charmaine Ng
- National University of Singapore, Department of Surgery, 1E Kent Ridge Road, NUHS Tower Block, Level 8, 119228, Singapore; NUS Environmental Research Institute (NERI), National University of Singapore, Singapore, T-Lab Building (# 02-01), 5A Engineering Drive 1, 117411, Singapore
| | - Ngoc Han Tran
- NUS Environmental Research Institute (NERI), National University of Singapore, Singapore, T-Lab Building (# 02-01), 5A Engineering Drive 1, 117411, Singapore
| | - Hongjie Chen
- Department of Civil & Environmental Engineering, National University of Singapore, Block E1A-07-03, 1 Engineering Drive 2, 117576, Singapore
| | - Karina Yew-Hoong Gin
- NUS Environmental Research Institute (NERI), National University of Singapore, Singapore, T-Lab Building (# 02-01), 5A Engineering Drive 1, 117411, Singapore; Department of Civil & Environmental Engineering, National University of Singapore, Block E1A-07-03, 1 Engineering Drive 2, 117576, Singapore.
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Farkas K, Marshall M, Cooper D, McDonald JE, Malham SK, Peters DE, Maloney JD, Jones DL. Seasonal and diurnal surveillance of treated and untreated wastewater for human enteric viruses. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:33391-33401. [PMID: 30259243 PMCID: PMC6245017 DOI: 10.1007/s11356-018-3261-y] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2018] [Accepted: 09/14/2018] [Indexed: 04/16/2023]
Abstract
Understanding the abundance and fate of human viral pathogens in wastewater is essential when assessing the public health risks associated with wastewater discharge to the environment. Typically, however, the microbiological monitoring of wastewater is undertaken on an infrequent basis and peak discharge events may be missed leading to the misrepresentation of risk levels. To evaluate diurnal patterns in wastewater viral loading, we undertook 3-day sampling campaigns with bi-hourly sample collection over three seasons at three wastewater treatment plants. Untreated influent was collected at Ganol and secondary-treated effluent was sampled at Llanrwst and Betws-y-Coed (North Wales, UK). Our results confirmed the presence of human adenovirus (AdV), norovirus genotypes I and II (NoVGI and NoVGII) in both influent and effluent samples while sapovirus GI (SaVGI) was only detected in influent water. The AdV titre was high and relatively constant in all samples, whereas the NoVGI, NoVGII and SaVGI showed high concentrations during autumn and winter and low counts during the summer. Diurnal patterns were detected in pH and turbidity for some sampling periods; however, no such changes in viral titres were observed apart from slight fluctuations in the influent samples. Our findings suggest that viral particle number in wastewater is not affected by daily chemical fluctuations. Hence, a grab sample taken at any point during the day may be sufficient to enumerate the viral load of wastewater effluent within an order of magnitude while four samples a day are recommended for testing wastewater influent samples.
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Affiliation(s)
- Kata Farkas
- School of Natural Sciences, Bangor University, Deiniol Road, Bangor, Gwynedd, LL57 2UW, UK.
| | - Miles Marshall
- School of Natural Sciences, Bangor University, Deiniol Road, Bangor, Gwynedd, LL57 2UW, UK
- Centre for Ecology and Hydrology, Environment Centre Wales, Deiniol Road, Bangor, LL57 2UW, UK
| | - David Cooper
- Centre for Ecology and Hydrology, Environment Centre Wales, Deiniol Road, Bangor, LL57 2UW, UK
| | - James E McDonald
- School of Natural Sciences, Bangor University, Deiniol Road, Bangor, Gwynedd, LL57 2UW, UK
| | - Shelagh K Malham
- School of Ocean Sciences, Bangor University, Menai Bridge, Anglesey, LL59 5AB, UK
| | - Dafydd E Peters
- School of Medical Sciences, Bangor University, Brigantia Building, Penrallt Road, Bangor, Gwynedd, LL57 2AS, UK
| | - John D Maloney
- School of Natural Sciences, Bangor University, Deiniol Road, Bangor, Gwynedd, LL57 2UW, UK
| | - Davey L Jones
- School of Natural Sciences, Bangor University, Deiniol Road, Bangor, Gwynedd, LL57 2UW, UK
- UWA School of Agriculture and Environment, University of Western Australia, Crawley, WA, 6009, Australia
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Shearer AEH, Kniel KE. Enhanced Removal of Norovirus Surrogates, Murine Norovirus and Tulane Virus, from Aqueous Systems by Zero-Valent Iron. J Food Prot 2018; 81:1432-1438. [PMID: 30080120 DOI: 10.4315/0362-028x.jfp-18-054] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Viral contamination can compromise the safety of water utilized for direct consumption, produce irrigation, and postharvest washing of produce. Zero-valent iron (ZVI) is used commercially for chemical remediation of water and has been demonstrated to remove some biological contaminants from water in laboratory and field studies. This study investigated the efficacy of ZVI to remove human norovirus surrogates, Tulane virus (TV) and murine norovirus (MNV), from water and to characterize the reversibility and nature of viral association with ZVI. Genomic material of TV and MNV recovered from the effluent of inoculated water treatment columns containing a 1:1 mixture of ZVI and sand was 2 and 3 log, respectively, less than that recovered from the effluent of treatment columns containing only sand. Elution buffers (citrate buffers, pH 4 and 7, and virus elution buffer, pH 9.5, with and without added 1 M NaCl) did not increase recovery of infectious TV and MNV from ZVI as compared with elution with water alone. TV-inoculated lettuce washed with water in the presence of ZVI yielded 1.5 to 2 log fewer infectious TV from washwater as compared with lettuce washed with water alone or in the presence of sand. These data demonstrate the enhanced removal of human norovirus surrogates, TV and MNV, from water by ZVI and provide indications that unrecovered viruses are not readily disassociated from ZVI by buffers of various pH and ionic strength. These findings warrant further investigation into larger-scale simulations of water remediation of viral contaminants for potential application in the treatment of water used for drinking, irrigation, and food processing.
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Affiliation(s)
- Adrienne E H Shearer
- Department of Animal and Food Sciences, University of Delaware, 531 South College Avenue, 044 Townsend Hall, Newark, Delaware 19716, USA
| | - Kalmia E Kniel
- Department of Animal and Food Sciences, University of Delaware, 531 South College Avenue, 044 Townsend Hall, Newark, Delaware 19716, USA
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Schoen ME, Jahne MA, Garland J. Human health impact of non-potable reuse of distributed wastewater and greywater treated by membrane bioreactors. MICROBIAL RISK ANALYSIS 2018; 9:72-81. [PMID: 35280215 PMCID: PMC8914979 DOI: 10.1016/j.mran.2018.01.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
We assessed the annual probability of infection resulting from non-potable exposures to distributed greywater and domestic wastewater treated by an aerobic membrane bioreactor (MBR) followed by chlorination. A probabilistic quantitative microbial risk assessment was conducted for both residential and office buildings and a residential district using Norovirus, Rotavirus, Campylobacter jejuni, and Cryptosporidium spp. as reference pathogens. A Monte Carlo approach captured variation in pathogen concentration in the collected water and pathogen (or microbial surrogate) treatment performance, when available, for various source water and collection scale combinations. Uncertain inputs such as dose-response relationships and the volume ingested were treated deterministically and explored through sensitivity analysis. The predicted 95th percentile annual risks for non-potable indoor reuse of distributed greywater and domestic wastewater at district and building scales were less than the selected health benchmark of 10-4 infections per person per year (ppy) for all pathogens except Cryptosporidium spp., given the selected exposure (which included occasional, accidental ingestion), dose-response, and treatment performance assumptions. For Cryptosporidium spp., the 95th percentile annual risks for reuse of domestic wastewater (for all selected collection scenarios) and district-collected greywater were greater than the selected health benchmark when using the limited, available MBR treatment performance data; this finding is counterintuitive given the large size of Cryptosporidium spp. relative to the MBR pores. Therefore, additional data on MBR removal of protozoa is required to evaluate the proposed MBR treatment process for non-potable reuse. Although the predicted Norovirus annual risks were small across scenarios (less than 10-7 infections ppy), the risks for Norovirus remain uncertain, in part because the treatment performance is difficult to interpret given that the ratio of total to infectious viruses in the raw and treated effluents remains unknown. Overall, the differences in pathogen characterization between collection type (i.e., office vs. residential) and scale (i.e., district vs. building) drove the differences in predicted risk; and, the accidental ingestion event (although modeled as rare) determined the annual probability of infection. The predicted risks resulting from treatment malfunction scenarios indicated that online, real-time monitoring of both the MBR and disinfection processes remains important for non-potable reuse at distributed scales. The resulting predicted health risks provide insight on the suitability of MBR treatment for distributed, non-potable reuse at different collection scales and the potential to reduce health risks for non-potable reuse.
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Affiliation(s)
- Mary E. Schoen
- Soller Environmental, LLC, 3022 King St., Berkeley, CA 94703, USA
- Corresponding author. (M.E. Schoen)
| | - Michael A. Jahne
- U.S. Environmental Protection Agency, 26 W. Martin Luther King Drive, Cincinnati, OH 45268, USA
| | - Jay Garland
- U.S. Environmental Protection Agency, 26 W. Martin Luther King Drive, Cincinnati, OH 45268, USA
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Miura T, Schaeffer J, Le Saux JC, Le Mehaute P, Le Guyader FS. Virus Type-Specific Removal in a Full-Scale Membrane Bioreactor Treatment Process. FOOD AND ENVIRONMENTAL VIROLOGY 2018; 10:176-186. [PMID: 29214559 DOI: 10.1007/s12560-017-9330-4] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2017] [Accepted: 12/01/2017] [Indexed: 05/09/2023]
Abstract
We investigated removal of noroviruses, sapoviruses, and rotaviruses in a full-scale membrane bioreactor (MBR) plant by monitoring virus concentrations in wastewater samples during two gastroenteritis seasons and evaluating the adsorption of viruses to mixed liquor suspended solids (MLSS). Sapoviruses and rotaviruses were detected in 25% of MBR effluent samples with log reduction values of 3- and 2-logs in geometric mean concentrations, respectively, while noroviruses were detected in only 6% of the samples. We found that norovirus and sapovirus concentrations in the solid phase of mixed liquor samples were significantly higher than in the liquid phase (P < 0.01, t test), while the concentration of rotaviruses was similar in both phases. The efficiency of adsorption of the rotavirus G1P[8] strain to MLSS was significantly less than norovirus GI.1 and GII.4 and sapovirus GI.2 strains (P < 0.01, t test). Differences in the adsorption of viruses to MLSS may cause virus type-specific removal during the MBR treatment process as shown by this study.
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Affiliation(s)
- Takayuki Miura
- Laboratoire de Microbiologie, LSEM-SG2 M, IFREMER, Nantes, France.
- Department of Environmental Health, National Institute of Public Health, 2-3-6 Minami, Wako, Saitama, 351-0197, Japan.
| | - Julien Schaeffer
- Laboratoire de Microbiologie, LSEM-SG2 M, IFREMER, Nantes, France
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Haramoto E, Kitajima M, Hata A, Torrey JR, Masago Y, Sano D, Katayama H. A review on recent progress in the detection methods and prevalence of human enteric viruses in water. WATER RESEARCH 2018; 135:168-186. [PMID: 29471200 DOI: 10.1016/j.watres.2018.02.004] [Citation(s) in RCA: 244] [Impact Index Per Article: 40.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2017] [Revised: 02/01/2018] [Accepted: 02/02/2018] [Indexed: 05/17/2023]
Abstract
Waterborne human enteric viruses, such as noroviruses and adenoviruses, are excreted in the feces of infected individuals and transmitted via the fecal-oral route including contaminated food and water. Since viruses are normally present at low concentrations in aquatic environments, they should be concentrated into smaller volumes prior to downstream molecular biological applications, such as quantitative polymerase chain reaction (qPCR). This review describes recent progress made in the development of concentration and detection methods of human enteric viruses in water, and discusses their applications for providing a better understanding of the prevalence of the viruses in various types of water worldwide. Maximum concentrations of human enteric viruses in water that have been reported in previous studies are summarized to assess viral abundances in aquatic environments. Some descriptions are also available on recent applications of sequencing analyses used to determine the genetic diversity of viral genomes in water samples, including those of novel viruses. Furthermore, the importance and significance of utilizing appropriate process controls during viral analyses are discussed, and three types of process controls are considered: whole process controls, molecular process controls, and (reverse transcription (RT)-)qPCR controls. Although no standards have been established for acceptable values of virus recovery and/or extraction-(RT-)qPCR efficiency, use of at least one of these appropriate control types is highly recommended for more accurate interpretation of observed data.
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Affiliation(s)
- Eiji Haramoto
- Interdisciplinary Center for River Basin Environment, Graduate Faculty of Interdisciplinary Research, University of Yamanashi, 4-3-11 Takeda, Kofu, Yamanashi 400-8511, Japan.
| | - Masaaki Kitajima
- Division of Environmental Engineering, Faculty of Engineering, Hokkaido University, North 13 West 8, Kita-ku, Sapporo, Hokkaido 060-8628, Japan.
| | - Akihiko Hata
- Integrated Research System for Sustainability Science, Institutes for Advanced Study, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8654, Japan.
| | - Jason R Torrey
- School of Architecture, Civil and Environmental Engineering, École Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland.
| | - Yoshifumi Masago
- Institute for the Advanced Study of Sustainability, United Nations University, 5-53-70 Jingumae, Shibuya-ku, Tokyo 150-8925, Japan.
| | - Daisuke Sano
- Department of Civil and Environmental Engineering, Graduate School of Engineering, Tohoku University, Aoba 6-6-06, Aramaki, Aoba-ku, Sendai, Miyagi 980-8579, Japan.
| | - Hiroyuki Katayama
- Department of Urban Engineering, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan; Vietnam Japan University, Luu Huu Phuoc Road, My Dinh 1 Ward, Nam Tu Liem District, Ha Noi, Vietnam.
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Carrión EN, Loas A, Patel HH, Pelmuş M, Ramji K, Gorun SM. Fluoroalkyl phthalocyanines: Bioinspired catalytic materials. J PORPHYR PHTHALOCYA 2018. [DOI: 10.1142/s1088424618500189] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The design of self oxidation-resistant catalytic materials based on organic molecules, although advantageous due to the ability to control their structures, is limited by the presence of labile C–H bonds. This mini review summarizes recent work aimed at first-row transition metal complexes of a new class of coordinating ligands, fluoroalkyl-substituted fluorophthalocyanines, R[Formula: see text]Pcs, ligands in which all, or the majority of their C–H bonds are replaced by a combination of fluoro- and perfluoroalkyl groups yielding porphyrin-bioinspired catalyst models. In the case of homogeneous systems, cobalt(II) complexes catalyze the aerobic oxidation of thiols to disulfides, a reaction of both biological significance and industrial importance. Zinc(II) complexes photo-generate excited state singlet oxygen, [Formula: see text]O[Formula: see text], resulting in both the incorporation of O[Formula: see text] in C–H bonds or, depending on the reaction parameters, oxidation of dyes, model pollutants. Catalyst heterogenization using oxidic and other supports yields stable, active hybrid materials. Functionalized R[Formula: see text]Pcs with acidic (–COOH) or basic (–NH[Formula: see text]R[Formula: see text], [Formula: see text] 2) groups exhibit scaffolds that afford both conjugation with biological vectors for theranostic applications as well as solid-supported materials with superior stability. Electrodes modified with hybrid R[Formula: see text]Pc-containing supports have also been used in photo-oxidations, replacing enzymes and H[Formula: see text]O[Formula: see text] associated reagents with a combination of light and air. An analytical device employed for the nano-level detection of environmentally deleterious antibiotics has been constructed.
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Affiliation(s)
- Erik N. Carrión
- Department of Chemistry and Biochemistry, Seton Hall University, South Orange, NJ 07079, USA
- Center for Functional Materials, Seton Hall University, South Orange, NJ 07079, USA
| | - Andrei Loas
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Hemantbhai H. Patel
- Department of Chemistry and Biochemistry, Seton Hall University, South Orange, NJ 07079, USA
- Hager Biosciences, 116 Research Drive, Bethlehem, PA 18015, USA
| | - Marius Pelmuş
- Department of Chemistry and Biochemistry, Seton Hall University, South Orange, NJ 07079, USA
- Center for Functional Materials, Seton Hall University, South Orange, NJ 07079, USA
| | - Karpagavalli Ramji
- Department of Chemistry and Biochemistry, Seton Hall University, South Orange, NJ 07079, USA
- Center for Functional Materials, Seton Hall University, South Orange, NJ 07079, USA
| | - Sergiu M. Gorun
- Department of Chemistry and Biochemistry, Seton Hall University, South Orange, NJ 07079, USA
- Center for Functional Materials, Seton Hall University, South Orange, NJ 07079, USA
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Wang H, Sikora P, Rutgersson C, Lindh M, Brodin T, Björlenius B, Larsson DGJ, Norder H. Differential removal of human pathogenic viruses from sewage by conventional and ozone treatments. Int J Hyg Environ Health 2018; 221:479-488. [PMID: 29402695 PMCID: PMC7106402 DOI: 10.1016/j.ijheh.2018.01.012] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2017] [Revised: 01/24/2018] [Accepted: 01/24/2018] [Indexed: 11/25/2022]
Abstract
Sewage contains a mixed ecosystem of diverse sets of microorganisms, including human pathogenic viruses. Little is known about how conventional as well as advanced treatments of sewage, such as ozonation, reduce the environmental spread of viruses. Analyses for viruses were therefore conducted for three weeks in influent, after conventional treatment, after additional ozonation, and after passing an open dam system at a full-scale treatment plant in Knivsta, Sweden. Viruses were concentrated by adsorption to a positively charged filter, from which they were eluted and pelleted by ultracentrifugation, with a recovery of about 10%. Ion Torrent sequencing was used to analyze influent, leading to the identification of at least 327 viral species, most of which belonged to 25 families with some having unclear classification. Real-time PCR was used to test for 21 human-related viruses in inlet, conventionally treated, and ozone-treated sewage and outlet waters. The viruses identified in influent and further analyzed were adenovirus, norovirus, sapovirus, parechovirus, hepatitis E virus, astrovirus, pecovirus, picobirnavirus, parvovirus, and gokushovirus. Conventional treatment reduced viral concentrations by one to four log10, with the exception of adenovirus and parvovirus, for which the removal was less efficient. Ozone treatment led to a further reduction by one to two log10, but less for adenovirus. This study showed that the amount of all viruses was reduced by conventional sewage treatment. Further ozonation reduced the amounts of several viruses to undetectable levels, indicating that this is a promising technique for reducing the transmission of many pathogenic human viruses.
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Affiliation(s)
- Hao Wang
- Department of Infectious Diseases, Institute of Biomedicine at Sahlgrenska Academy, University of Gothenburg, 41346 Gothenburg, Sweden
| | - Per Sikora
- Department of Pathology and Genetics, Institute of Biomedicine at Sahlgrenska Academy, University of Gothenburg, 41345 Gothenburg, Sweden; Clinical Genomics Gothenburg, SciLife Labs, Gothenburg, Sweden
| | - Carolin Rutgersson
- Department of Infectious Diseases, Institute of Biomedicine at Sahlgrenska Academy, University of Gothenburg, 41346 Gothenburg, Sweden; Centre for Antibiotic Resistance Research (CARe) at University of Gothenburg, Sweden
| | - Magnus Lindh
- Department of Infectious Diseases, Institute of Biomedicine at Sahlgrenska Academy, University of Gothenburg, 41346 Gothenburg, Sweden
| | - Tomas Brodin
- Department Ecology and Environmental Science, Umeå University, Umeå, Sweden
| | - Berndt Björlenius
- Division of Industrial Biotechnology, KTH Royal Institute of Technology, AlbaNova University Center, SE-106 91 Stockholm, Sweden
| | - D G Joakim Larsson
- Department of Infectious Diseases, Institute of Biomedicine at Sahlgrenska Academy, University of Gothenburg, 41346 Gothenburg, Sweden; Centre for Antibiotic Resistance Research (CARe) at University of Gothenburg, Sweden
| | - Heléne Norder
- Department of Infectious Diseases, Institute of Biomedicine at Sahlgrenska Academy, University of Gothenburg, 41346 Gothenburg, Sweden.
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Sidhu JPS, Sena K, Hodgers L, Palmer A, Toze S. Comparative enteric viruses and coliphage removal during wastewater treatment processes in a sub-tropical environment. THE SCIENCE OF THE TOTAL ENVIRONMENT 2018; 616-617:669-677. [PMID: 29103646 DOI: 10.1016/j.scitotenv.2017.10.265] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2017] [Revised: 10/17/2017] [Accepted: 10/23/2017] [Indexed: 04/14/2023]
Abstract
Microbiological safety of reclaimed water is one of the most important issues in managing potential health risks related to wastewater recycling. Presence and removal of human adenovirus (HAdV), human polyomavirus (HPyV), human torque teno virus (HTtV) and somatic coliphage family Microviridae in three wastewater treatment plants (WWTP) in sub-tropical Brisbane, Australia was investigated. All three WWTPs employ activated sludge process with added on Bardenpho process for nutrient removal. HPyV, HAdV, HTtV and Microviridae were consistently detected in the influent (105 to 106 Genomic copies (GC) L-1) and secondary treated effluent (102 to 103GCL-1). The results of this study suggest that, under appropriate conditions, WWTPs with activated sludge process in sub-tropical climate could be an effective treatment barrier with >3 log10 removal of enteric virus. The geometric mean of pooled data for each virus from all sites showed the highest removal for HPyV (3.65 log10) and lowest for HAdV (2.79 log10) which was statistically significant (p=0.00001). Whereas, the removal rate of HTtV and Microviridae was identical (2.81 log10). A poor correlation between the presence of enteric virus in influent or effluent with routinely monitored physicochemical parameters suggests limited use of physicochemical parameters as predictors of enteric virus presence. High prevalence of HAdV in influent and effluent combined with comparatively low removal suggest that it could be used as a model microorganism for determining enteric virus removal efficacy. Additional tertiary treatment may be required prior to effluent reuse for non-potable purposes or discharge into the recreational waters to prevent exposure of people to health hazards.
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Affiliation(s)
- J P S Sidhu
- CSIRO Land and Water, Ecoscience Precinct, 41 Boggo Road, Brisbane 4102, Australia; School of Public Health, University of Queensland, Herston Road, Brisbane, Qld 4006, Australia.
| | - K Sena
- Department of Forestry, University of Kentucky, Lexington, KY, USA
| | - L Hodgers
- CSIRO Land and Water, Ecoscience Precinct, 41 Boggo Road, Brisbane 4102, Australia
| | - A Palmer
- CSIRO Land and Water, Ecoscience Precinct, 41 Boggo Road, Brisbane 4102, Australia
| | - S Toze
- CSIRO Land and Water, Ecoscience Precinct, 41 Boggo Road, Brisbane 4102, Australia; School of Public Health, University of Queensland, Herston Road, Brisbane, Qld 4006, Australia
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Zhu Y, Wang Y, Zhou S, Jiang X, Ma X, Liu C. Robust performance of a membrane bioreactor for removing antibiotic resistance genes exposed to antibiotics: Role of membrane foulants. WATER RESEARCH 2018; 130:139-150. [PMID: 29216481 DOI: 10.1016/j.watres.2017.11.067] [Citation(s) in RCA: 72] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2017] [Revised: 10/02/2017] [Accepted: 11/19/2017] [Indexed: 06/07/2023]
Abstract
Antibiotic resistance genes (ARGs) are an emerging concern in wastewater treatment plants (WWTPs), as dissemination of ARGs can pose a serious risk to human health. Few studies, however, have quantified ARGs in membrane bioreactors (MBRs), although MBRs have been widely used for both municipal and industrial wastewater treatment. To reveal the capacity of MBRs for removal of ARGs and the response of membrane fouling after antibiotic exposure, five typical ARG subtypes (sulI, sulII, tetC, tetX and ereA) and int1 were quantified affiliated by systematic membrane foulants analysis in a laboratory-scale anoxic/aerobic membrane bioreactor (A/O-MBR). Sulfamethoxazole and tetracycline hydrochloride additions increased ARG abundances by 0.5-1.4 orders of magnitude in the activated sludge, while the ARG removal performance of the membrane module remained stable (or even increased with ARG absolute abundance in several cases), with the abundance of removed ARGs ranging from 0.6 to 5.6 orders of magnitude. Specifically, the distribution of ARGs in membrane foulants accounted for 13%-25% of the total absolute abundance of all tested MBR samples. Indeed, substantial fouling occurred after the antibiotic additions, with the mean concentrations of soluble microbial product (SMP) and extracellular polymeric substance (EPS) increasing by 340% and 220%, respectively, in a membrane fouling cycle; moreover, the contents of EPS and SMP in the membrane foulants were significantly correlated with the ARG absolute abundance of membrane foulants (p < 0.05), among which more significant correlations occurred between both the protein and polysaccharide of foulants than that with humic acid. The dense membrane fouling layer and the membrane itself constituted dual barriers that effectively avoided the leakage of ARGs from the membrane module. Our findings provide fundamental insights into the proliferation and removal of ARGs in MBR systems, and highlight the contribution of membrane fouling to ARG removals in terms of the potential of MBR as an effective strategy to reduce ARG levels in WWTP effluent.
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Affiliation(s)
- Yijing Zhu
- State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science and Engineering, Tongji University, Siping Road, Shanghai 200092, PR China
| | - Yayi Wang
- State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science and Engineering, Tongji University, Siping Road, Shanghai 200092, PR China.
| | - Shuai Zhou
- State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science and Engineering, Tongji University, Siping Road, Shanghai 200092, PR China
| | - Xuxin Jiang
- State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science and Engineering, Tongji University, Siping Road, Shanghai 200092, PR China
| | - Xiao Ma
- State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science and Engineering, Tongji University, Siping Road, Shanghai 200092, PR China
| | - Chao Liu
- Shanghai Youlin Zhuyuan Sewage Investment and Development co. ltd, Shanghai 200125, China
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Sapovirus in Wastewater Treatment Plants in Tunisia: Prevalence, Removal, and Genetic Characterization. Appl Environ Microbiol 2018; 84:AEM.02093-17. [PMID: 29305515 DOI: 10.1128/aem.02093-17] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2017] [Accepted: 12/28/2017] [Indexed: 01/04/2023] Open
Abstract
Sapovirus (SaV), from the Caliciviridae family, is a genus of enteric viruses that cause acute gastroenteritis. SaV is shed at high concentrations with feces into wastewater, which is usually discharged into aquatic environments or reused for irrigation without efficient treatments. This study analyzed the incidence of human SaV in four wastewater treatment plants from Tunisia during a period of 13 months (December 2009 to December 2010). Detection and quantification were carried out using reverse transcription-quantitative PCR (RT-qPCR) methods, obtaining a prevalence of 39.9% (87/218). Sixty-one positive samples were detected in untreated water and 26 positive samples in processed water. The Dekhila plant presented the highest contamination levels, with a 63.0% prevalence. A dominance of genotype I.2 was observed on 15 of the 24 positive samples that were genetically characterized. By a Bayesian estimation algorithm, the SaV density in wastewater was estimated using left-censored data sets. The mean value of log SaV concentration in untreated wastewater ranged between 2.7 and 4.5 logs. A virus removal efficiency of 0.2 log was calculated for the Dekhila plant as the log ratio posterior distributions between untreated and treated wastewater. Multiple quantitative values obtained in this study must be available in quantitative microbial risk assessment in Tunisia as parameter values reflecting local conditions.IMPORTANCE Human sapovirus (SaV) is becoming more prevalent worldwide and organisms in this genus are recognized as emerging pathogens associated with human gastroenteritis. The present study describes novel findings on the prevalence, seasonality, and genotype distribution of SaV in Tunisia and Northern Africa. In addition, a statistical approximation using Bayesian estimation of the posterior predictive distribution ("left-censored" data) was employed to solve methodological problems related with the limit of quantification of the quantitative PCR (qPCR). This approach would be helpful for the future development of quantitative microbial risk assessment procedures for wastewater.
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49
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Dias E, Ebdon J, Taylor H. The application of bacteriophages as novel indicators of viral pathogens in wastewater treatment systems. WATER RESEARCH 2018; 129:172-179. [PMID: 29149672 DOI: 10.1016/j.watres.2017.11.022] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2017] [Revised: 11/03/2017] [Accepted: 11/08/2017] [Indexed: 05/19/2023]
Abstract
Many wastewater treatment technologies have been shown to remove bacterial pathogens more effectively than viral pathogens and, in aquatic environments, levels of traditional faecal indicator bacteria (FIB) do not appear to correlate consistently with levels of human viral pathogens. There is, therefore, a need for novel viral indicators of faecal pollution and surrogates of viral pathogens, especially given the increasing importance of indirect and direct wastewater reuse. Potential candidates include bacteriophages (phages) and the study described here sought to elucidate the relationship between three groups of phages (somatic coliphages (SOMPH), F-RNA coliphages (F-RNAPH) and human-specific phages infecting B. fragilis (Bf124PH) - enumeration using double layer agar technique) and viral pathogens (human adenovirus (HuAdV) and norovirus (NoV) - enumeration using molecular methods) through full-scale municipal wastewater treatment processes. FIB (faecal coliforms (FC) and intestinal enterococci (ENT) - enumeration using membrane filtration) were also monitored. Samples were collected every fortnight, during a twelve-month period, at each stage of four full-scale wastewater treatment plants (WWTP) in southern England (two activated sludge (AS) and two trickling filter (TF) plants) (n = 360 samples). FIB and SOMPH were consistently found in all samples tested, whereas F-RNAPH, Bf124PH and HuAdV were less frequently detected, especially following AS treatment. The detection rate of NoV was low and consequently discussion of this group of viruses is limited. Concentrations of SOMPH and FIB were statistically higher (p value < 0.05) than concentrations of F-RNAPH, Bf124PH and HuAdV in raw wastewater. FIB were more effectively removed than phages in both systems. Removal rates of HuAdV were similar to those of phages at the secondary treatment stage of both systems. In TF systems, HuAdV were removed at the same rate as F-RNAPH, but at lower rates than SOMPH and Bf124PH. The findings suggest that phages (in particular SOMPH) are better indicators of the fate of viral pathogens in WWTP than existing FIB and that these organisms may have a useful role to play in future sanitation safety planning.
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Affiliation(s)
- Edgard Dias
- Department of Sanitary and Environmental Engineering, Faculty of Engineering, Federal University of Juiz de Fora, Juiz de Fora, MG, 36036-330, Brazil; The Environment and Public Health Research Group (EPHReG), School of Environment and Technology, University of Brighton, Brighton, BN2 4GJ, UK.
| | - James Ebdon
- The Environment and Public Health Research Group (EPHReG), School of Environment and Technology, University of Brighton, Brighton, BN2 4GJ, UK.
| | - Huw Taylor
- The Environment and Public Health Research Group (EPHReG), School of Environment and Technology, University of Brighton, Brighton, BN2 4GJ, UK.
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50
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Morrow CP, McGaughey AL, Hiibel SR, Childress AE. Submerged or sidestream? The influence of module configuration on fouling and salinity in osmotic membrane bioreactors. J Memb Sci 2018. [DOI: 10.1016/j.memsci.2017.11.030] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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