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Kämmler J, Zoumpouli GA, Sellmann J, Chew YMJ, Wenk J, Ernst M. Decolorization and control of bromate formation in membrane ozonation of humic-rich groundwater. WATER RESEARCH 2022; 221:118739. [PMID: 35716412 DOI: 10.1016/j.watres.2022.118739] [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: 02/03/2022] [Revised: 05/29/2022] [Accepted: 06/10/2022] [Indexed: 06/15/2023]
Abstract
Membrane ozonation of bromide-containing, high-color natural organic matter (NOM) containing groundwater was performed using single-tube polydimethylsiloxane (PDMS) and multi-tube polytetrafluoroethylene (PTFE) membrane contactors, and compared to batch ozonation. For membrane ozonation, dissolved ozone concentration, water color (VIS436), ultraviolet light absorption (UV254) and bromate formation were correlated with ozone dose, ozone gas concentration, hydraulic retention time and Hatta number (Ha). NOM color removal of up to 45 % for the single-tube contactor and 17 % for the multi-tube contactor were achieved while containing bromate formation below 10 µg L-1. Higher color removal using higher ozone doses was associated with high bromate formation i.e. >>10 µg L-1. In membrane ozonation, low ozone gas concentrations, long hydraulic retention times and high Ha resulted in low dissolved ozone concentrations due to quenching of ozone by NOM. At specific ozone doses of < 0.5 mg O3/mg DOC and Ha > 1, single-tube ozonation resulted in comparable results to batch ozonation while bromate formation was higher in the single-tube contactor at specific ozone doses > 0.5 mg O3/mg DOC and Ha < 1. At comparable ozone doses and Ha, bromate formation in the multi-tube contactor was always higher compared to single-tube and batch ozonation. This could be associated with the uneven ozone distribution within the multi-tube contactor. Results show that ozone dose is the major driver for selectivity between bromate formation and NOM color removal in both membrane and batch ozonation. Bromate formation in membrane ozonation may be controlled by adjusting gas concentration, Ha and hydraulic retention time. Membrane module design and process parameters of membrane ozonation reactors significantly affect treatment performance and should be optimized for selective target compound removal over by-product formation.
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Affiliation(s)
- Jakob Kämmler
- Hamburg University of Technology, Institute for Water Resources and Water Supply, Am Schwarzenberg-Campus 3, 21073 Hamburg, Germany; DVGW Research Centre TUHH, Am Schwarzenberg-Campus 3, 21073 Hamburg, Germany
| | - Garyfalia A Zoumpouli
- Centre for Doctoral Training, Centre for Sustainable Chemical Technologies, University of Bath, Bath BA27AY, United Kingdom; Department of Chemical Engineering, University of Bath, Bath BA27AY, United Kingdom; Water Innovation & Research Centre (WIRC), University of Bath, Bath BA27AY, United Kingdom
| | - Jörn Sellmann
- Hamburg University of Technology, Institute for Water Resources and Water Supply, Am Schwarzenberg-Campus 3, 21073 Hamburg, Germany
| | - Y M John Chew
- Department of Chemical Engineering, University of Bath, Bath BA27AY, United Kingdom; Water Innovation & Research Centre (WIRC), University of Bath, Bath BA27AY, United Kingdom
| | - Jannis Wenk
- Department of Chemical Engineering, University of Bath, Bath BA27AY, United Kingdom; Water Innovation & Research Centre (WIRC), University of Bath, Bath BA27AY, United Kingdom.
| | - Mathias Ernst
- Hamburg University of Technology, Institute for Water Resources and Water Supply, Am Schwarzenberg-Campus 3, 21073 Hamburg, Germany; DVGW Research Centre TUHH, Am Schwarzenberg-Campus 3, 21073 Hamburg, Germany.
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Liu C, Li W, Liu L, Yu H, Liu F, Lee DJ. Autotrophic induced heterotrophic bioreduction of bromate in use of elemental sulfur or zerovalent iron as electron donor. BIORESOURCE TECHNOLOGY 2020; 317:124015. [PMID: 32827978 DOI: 10.1016/j.biortech.2020.124015] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2020] [Revised: 08/07/2020] [Accepted: 08/12/2020] [Indexed: 06/11/2023]
Abstract
Bioreduction of bromate using elementary sulfur (S(0)) or zerovalent iron (Fe(0)) as electron donor was studied. After 60-day cultivation, the microbial consortium achieved high bromate conversion of 91.9 ± 2.1% and 90.0 ± 4.0% in the S(0) and Fe(0) amended tests. A coupling mechanism involving autotrophic oxidation of S(0) or Fe(0) to convert bicarbonate to volatile fatty acids followed by bromate reduction at the oxidation of the volatile fatty acids to CO2 was proposed to interpret the noted reactor performances. The key functional strains including S(0) or Fe(0) oxidizing bacteria (Thiomonas and Ferrovibrio) and bromate reducing bacteria (Pseudoxanthomonas and Clostridium sp.) are identified. The studied system can provide an efficient BrO3- conversion way with no external organic carbon sources.
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Affiliation(s)
- Chunshuang Liu
- College of Chemical Engineering, China University of Petroleum, Qingdao 266580, China
| | - Wei Li
- College of Chemical Engineering, China University of Petroleum, Qingdao 266580, China
| | - Lihong Liu
- School of Earth Sciences, Northeast Petroleum University, Daqing 163318, China
| | - Haitong Yu
- College of Chemical Engineering, China University of Petroleum, Qingdao 266580, China
| | - Fang Liu
- College of Chemical Engineering, China University of Petroleum, Qingdao 266580, China
| | - Duu-Jong Lee
- Department of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan; Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei 10607, Taiwan; College of Technology and Engineering, National Taiwan Normal University, Taipei 10620, Taiwan; College of Engineering, Tunghai University, Taichung 40770 Taiwan.
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Huang CH, Chen CY, Wang GS. Temperature dependence of characteristics of organic precursors, bromide, and disinfection byproduct formation. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 662:746-754. [PMID: 30703732 DOI: 10.1016/j.scitotenv.2019.01.239] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2018] [Revised: 01/16/2019] [Accepted: 01/20/2019] [Indexed: 06/09/2023]
Abstract
This study characterized the potential effects of elevated water temperature on source water quality and corresponding disinfection byproduct (DBP) formation. Results of laboratory simulations showed that although DBP formation increased with temperature, both the concentrations of dissolved organic carbon (DOC) and DBP formation decreased when water was incubated at higher temperatures (35 °C) prior to chlorination, probably due to increased microbial activity leading to greater degradation of organic precursors that affects DBP formation. However, the effect of incubation temperature prior to chlorination on final DBP formation varies with the characteristics of source water. When bromide was present, the ratio of Br-DBPs increased. The concentrations of total trihalomethanes (THMs) and haloacetonitriles (HANs) also increased when levels of bromide increased. This trend was not substantial for total haloacetic acids (HAAs). The hydrophobic organic precursors of THMs and HANs can be effectively removed by coagulation and filtration processes, and the effects of higher incubation temperature may thus be compromised. However, no apparent changes were observed for HAAs. The effects of bromide may also be more apparent in HAA and HAN formation after coagulation and filtration treatments.
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Affiliation(s)
- Chih-Hsuan Huang
- Institute of Environmental Health, National Taiwan University, Taipei, Taiwan
| | - Chia-Yang Chen
- Institute of Environmental Health, National Taiwan University, Taipei, Taiwan
| | - Gen-Shuh Wang
- Institute of Environmental Health, National Taiwan University, Taipei, Taiwan.
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Shahmansouri A, Bellona C. Nanofiltration technology in water treatment and reuse: applications and costs. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2015; 71:309-19. [PMID: 25714628 DOI: 10.2166/wst.2015.015] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Nanofiltration (NF) is a relatively recent development in membrane technology with characteristics that fall between ultrafiltration and reverse osmosis (RO). While RO membranes dominate the seawater desalination industry, NF is employed in a variety of water and wastewater treatment and industrial applications for the selective removal of ions and organic substances, as well as certain niche seawater desalination applications. The purpose of this study was to review the application of NF membranes in the water and wastewater industry including water softening and color removal, industrial wastewater treatment, water reuse, and desalination. Basic economic analyses were also performed to compare the profitability of using NF membranes over alternative processes. Although any detailed cost estimation is hampered by some uncertainty (e.g. applicability of estimation methods to large-scale systems, labor costs in different areas of the world), NF was found to be a cost-effective technology for certain investigated applications. The selection of NF over other treatment technologies, however, is dependent on several factors including pretreatment requirements, influent water quality, treatment facility capacity, and treatment goals.
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Affiliation(s)
- Arash Shahmansouri
- Department of Civil and Environmental Engineering, Clarkson University, 8 Clarkson Ave., Potsdam, NY 13699-5710, USA E-mail:
| | - Christopher Bellona
- Department of Civil and Environmental Engineering, Clarkson University, 8 Clarkson Ave., Potsdam, NY 13699-5710, USA E-mail:
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