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Mondal T, Choudhury M, Kundu D, Dutta D, Samanta P. Landfill: An eclectic review on structure, reactions and remediation approach. WASTE MANAGEMENT (NEW YORK, N.Y.) 2023; 164:127-142. [PMID: 37054538 DOI: 10.1016/j.wasman.2023.03.034] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Revised: 02/14/2023] [Accepted: 03/24/2023] [Indexed: 06/19/2023]
Abstract
Since the enactment of the Clean Water Act (1972), which was supplemented by increased accountability under Resource Conservation and Recovery Act (RCRA) Subtitle D (1991) and the Clean Air Act Amendments (1996), landfills have indeed been widely used all around the world for treating various wastes. The landfill's biological and biogeochemical processes are believed to be originated about 2 to 4 decades ago. Scopus and web of Science based bibliometric study reveals that there are few papers available in scientific domain. Further, till today not a single paper demonstrated the detailed landfills heterogenicity, chemistry and microbiological processes and their associated dynamics in a combined approach. Accordingly, the paper addresses the recent applications of cutting-edge biogeochemical and biological methods adopted by different countries to sketch an emerging perspective of landfill biological and biogeochemical reactions and dynamics. Additionally, the significance of several regulatory factors controlling the landfill's biogeochemical and biological processes is highlighted. Finally, this article emphasizes the future opportunities for integrating advanced techniques to explain landfill chemistry explicitly. In conclusion, this paper will provide a comprehensive vision of the diverse dimensions of landfill biological and biogeochemical reactions and dynamics to the scientific world and policymakers.
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Affiliation(s)
- Tridib Mondal
- Department of Chemistry, Sukanta Mahavidyalaya, University of North Bengal, Dhupguri 735210, West Bengal, India
| | - Moharana Choudhury
- Environmental Research and Management Division, Voice of Environment (VoE), Guwahati - 781034, Assam, India.
| | - Debajyoti Kundu
- Waste Re-processing Division, CSIR-National Environmental Engineering Research Institute, Nehru Marg, Nagpur 440 020, India
| | - Deblina Dutta
- Department of Environmental Science and Engineering, SRM University-AP, Amaravati, Andhra Pradesh 522 240, India
| | - Palas Samanta
- Department of Environmental Science, Sukanta Mahavidyalaya, University of North Bengal, Dhupguri 735210, West Bengal, India.
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Liao R, Song Z, Zhang J, Xing D, Yan S, Dong W, Sun F. Pilot-scale treatment of municipal garbage mechanical dewatering wastewater by an integrated system involving partial nitrification and denitrification. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 329:117088. [PMID: 36584508 DOI: 10.1016/j.jenvman.2022.117088] [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: 10/07/2022] [Revised: 12/11/2022] [Accepted: 12/17/2022] [Indexed: 06/17/2023]
Abstract
The municipal solid waste (MSW) with high water content can be pre-treated by the mechanical dewatering technology to significantly decrease the leachate generation in sequential landfill treatment or to improve the efficiency for solid waste incineration, which has attracted great concerns recently. However, the generated mechanical dewatering wastewater (MDW) containing high organics and nitrogenous content has been one of the big challenges for the sustainable treatment of MSW. In this study, a pilot-scale integrated system composed of physiochemical pretreatment, anaerobic sequencing batch reactor (ASBR), partial nitrification SBR (PN-SBR), denitrification SBR (DN-SBR), and UV/O3 advanced oxidation process, with a capacity of 1.0 m3/d to treat MDW containing over 34000 mg-chemical oxygen demand (COD)/L organics pollutant and 850 mg/L NH4+-N, was successfully developed. By explorations on the start-up of this integrated system and the process conditions optimization, after a long-term system operation, the findings demonstrated that this integrated system could reach the removal efficiency in the COD, NH4+-N and total nitrogen (TN) in the MDW of 99.7%, 98.2% and 96.9%, respectively. Partial nitrification and denitrification were successfully obtained for the TN removal with the nitrite accumulation rate of over 80%. The treatment condition parameters were optimized to be 800 mg/L polyaluminum chloride (PAC) and 2 mg/L polyacrylamide (PAM) under a pH of 9 for pretreatment, 36 h hydraulic retention time (HRT) for ASBR, 24 h for PN-SBR, and 2 h for UV/O3 unit. The organic sources in the MDW were also found to be feasible for the DN-SBR. Consequently, the resulting final effluent was stably in compliance with the discharge standard with high stability and reliability.
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Affiliation(s)
- Runfeng Liao
- Joint Research Centre for Protective Infrastructure Technology and Environmental Green Bioprocess, Department of Environmental and Municipal Engineering, Tianjin Chengjian University, Tianjin, 300384, China; School of Civil and Environmental Engineering, Harbin Institute of Technology (Shenzhen), Shenzhen, 518055, China
| | - Zi Song
- School of Civil and Environmental Engineering, Harbin Institute of Technology (Shenzhen), Shenzhen, 518055, China
| | - Jianjun Zhang
- Shenzhen Municipal Design & Research Institute Co. Ltd., China
| | - Dingyu Xing
- School of Civil and Environmental Engineering, Harbin Institute of Technology (Shenzhen), Shenzhen, 518055, China; State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150090, China
| | - Sibo Yan
- School of Civil and Environmental Engineering, Harbin Institute of Technology (Shenzhen), Shenzhen, 518055, China
| | - Wenyi Dong
- School of Civil and Environmental Engineering, Harbin Institute of Technology (Shenzhen), Shenzhen, 518055, China; State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150090, China
| | - Feiyun Sun
- School of Civil and Environmental Engineering, Harbin Institute of Technology (Shenzhen), Shenzhen, 518055, China; State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150090, China.
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3
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Xu L, Chen Y, Wang Z, Zhang Y, He Y, Zhang A, Chen H, Xue G. Discovering dominant ammonia assimilation: Implication for high-strength nitrogen removal in full scale biological treatment of landfill leachate. CHEMOSPHERE 2023; 312:137256. [PMID: 36395888 DOI: 10.1016/j.chemosphere.2022.137256] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Revised: 10/14/2022] [Accepted: 11/14/2022] [Indexed: 06/16/2023]
Abstract
Landfill leachate containing high-strength nitrogen is generated in domestic waste landfilling. The integration of anoxic and aerobic process (AO) based on nitrification and denitrification, has been a mainstream process of biological nitrogen removal (BNR). But the high-strength organics as well as aerobic effluent reflux might change the biochemical environment designed and operated as AO. In view of the nitrogen balance in a full scale landfill leachate treatment plant with two-stage AO, we found that approximately 90% removal of total nitrogen (TN) and ammonia (NH4+-N) focused on primary anoxic and aerobic stage. Meanwhile, the less nitrate and nitrite in the aerobic effluent were incapable of sustaining denitrification or anaerobic ammonia oxidation (anammox). The high reflux flow from aerobic to anoxic process enabled the similar microbial community and functional genes in anoxic and aerobic process units. However, the functional genes involving ammonia assimilation in all process units showcased the highest abundance compared to those correlated with other BNR pathways, including nitrification and denitrification, assimilatory and dissimilatory nitrate reduction, nitrogen fixation and anammox. The ammonia assimilation dominated the removals of TN and NH4+-N, rather than other BNR mechanism. The insight of dominant ammonia assimilation is favorable for illustrating the authentic BNR mechanism of landfill leachate in AO, thereby guiding the optimization of engineering design and operation.
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Affiliation(s)
- Lei Xu
- College of Environmental Science and Engineering, Donghua University, Shanghai, 201620, China
| | - Yuting Chen
- College of Environmental Science and Engineering, Donghua University, Shanghai, 201620, China
| | - Zheng Wang
- College of Environmental Science and Engineering, Donghua University, Shanghai, 201620, China
| | - Yu Zhang
- College of Environmental Science and Engineering, Donghua University, Shanghai, 201620, China
| | - Yueling He
- College of Environmental Science and Engineering, Donghua University, Shanghai, 201620, China
| | - Ai Zhang
- College of Environmental Science and Engineering, Donghua University, Shanghai, 201620, China
| | - Hong Chen
- College of Environmental Science and Engineering, Donghua University, Shanghai, 201620, China
| | - Gang Xue
- College of Environmental Science and Engineering, Donghua University, Shanghai, 201620, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai, 200000, China.
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Kumwimba MN, Li X, Huang J, Muyembe DK, Dzakpasu M, Sanganyado E. Performance of various fillers in ecological floating beds planted with Myriophyllum aquaticum treating municipal wastewater. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 842:156827. [PMID: 35750173 DOI: 10.1016/j.scitotenv.2022.156827] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Revised: 06/13/2022] [Accepted: 06/15/2022] [Indexed: 06/15/2023]
Abstract
The performance of different suspended fillers (zeolite, drinking water treatment residual, biochar, woodchip and stereo-elastic packing) and their combinations in treating municipal wastewater in ecological floating beds (Eco-FBs) planted with Myriophyllum aquaticum was assessed. Six sets of enhanced Eco-FBs were developed to assess the individual and synergistic effects of combinations of the various fillers and microorganisms on nutrient elimination. The results demonstrated mean TN, NH4-N, TP and COD purification efficiencies of 99.2 ± 11.2 %, 99.82 ± 16.4 %, 98.3 ± 14.3 %, and 96.1 ± 12.3 %, respectively in the Eco-FBs strengthened with all five fillers. The corresponding purification rates were 0.89 ± 0.14, 0.75 ± 0.12, 0.08 ± 0.016, and 7.05 ± 1.09 g m-2 d-1, which were 2-3 times higher than those of the conventional Eco-FB system. High-throughput sequencing showed that some genera related to nutrient transformation, including Proteobacteria (24.13-51.95 %), followed by Chloroflexi (5.64-25.01 %), Planctomycetes (8.48-14.43 %) and Acidobacteria (2.29-11.65 %), were abundantly enriched in the strengthened Eco-FBs. Enhancement of the Eco-FBs with various fillers significantly increased microbial species richness and diversity as demonstrated by Chao1, Shannon and Simpson's indexes, particularly when all the five fillers were combined. Therefore, introducing suspended fillers into Eco-FBs is an appropriate approach for improving nutrient elimination from municipal wastewater.
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Affiliation(s)
- Mathieu Nsenga Kumwimba
- State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China; Faculty of Agronomy, University of Lubumbashi, Democratic Republic of Congo
| | - Xuyong Li
- State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jinlou Huang
- State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China.
| | - Diana Kavidia Muyembe
- Institute of Food Science & Technology, Chinese Academy of Agricultural Sciences, China
| | - Mawuli Dzakpasu
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China
| | - Edmond Sanganyado
- Department of Applied Sciences, Northumbria University, Newcastle-upon-Tyne, NE1 8ST, United Kingdom
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Efficiencies of O-MBR and A/O-MBR for Organic Matter Removal from and Trihalomethane Formation Potential Reduction in Domestic Wastewater. MEMBRANES 2022; 12:membranes12080761. [PMID: 36005676 PMCID: PMC9416499 DOI: 10.3390/membranes12080761] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Revised: 07/26/2022] [Accepted: 07/29/2022] [Indexed: 11/18/2022]
Abstract
Lab-scale anoxic/oxic membrane bioreactor (A/O-MBR) and oxic membrane bioreactor (O-MBR) systems using a submerged polysulfone hollow-fiber membrane module with a pore size of 0.01 μm and a total surface area of 1.50 m2 were used to treat domestic wastewater. The sludge retention time (SRT) of each system was examined by setting the SRT to 10, 20, and infinity (no sludge withdrawal). The results showed that the total nitrogen removal efficiency of the A/O-MBR was more significant than that of the O-MBR at a SRT of infinity, with figures of 72.3% and 33.1% being found, respectively. The COD removal efficiencies of the A/O-MBR system with a SRT of 10 days, 20 days, and infinity were 82.4%, 84.3%, and 91.5%, respectively. The COD removal efficiencies of the O-MBR system with a SRT of 10 days, 20 days, and infinity were 79.3%, 81.5%, and 89.8%, respectively. An increase in the SRT resulted in an increase in the COD removal efficiency. The FEEM peak of the influent tended to decrease after an increase in the SRT for both systems (A/O-MBR and O-MBR). For the A/O-MBR system, the trihalomethane formation potential (THMFP) was significantly reduced by 88.91% (at a SRT of infinity). The THMFP declined significantly by 85.39% for the O-MBR system at a SRT of infinity. The A/O-MBR system showed a slightly higher efficiency than the O-MBR system in terms of the COD removal and the THMFP reduction. These results indicated that the MBR process, and the A/O-MBR system, in particular, could be used as an effective wastewater treatment process for many developing countries that are troubled by the emerging contamination of water and wastewater.
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Li Y, Liu L, Wang H. Mixotrophic denitrification for enhancing nitrogen removal of municipal tailwater: Contribution of heterotrophic/sulfur autotrophic denitrification and bacterial community. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 814:151940. [PMID: 34843783 DOI: 10.1016/j.scitotenv.2021.151940] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Revised: 11/20/2021] [Accepted: 11/20/2021] [Indexed: 06/13/2023]
Abstract
The heterotrophic and autotrophic denitrification system can be used to remove wastewater nitrogen effectively. However, the relationship between nitrogen removal performance and microbial community composition variation needs to be explored further. Therefore, a combined heterotrophic‑sulfur autotrophic biofilter (HSAD) was established to remove nitrogen from municipal tailwater. As methanol dosage increased from 12 mg/L to 36 mg/L, NO3--N removal efficiency increased from 86.1% to 98.9%, and the generation of SO42- in the effluent was controlled within 167.6-113.2 mg/L under the condition of 30 mg/L NO3--N in influent and 3 h hydraulic retention time. Increasing methanol dosage promoted the synergism of heterotrophic denitrification (HD) and sulfur autotrophic denitrification (SAD). Different denitrification performance was associated with the microbial community composition. Proteobacteria, Bacteroidetes, and Chloroflexi were major phyla with cumulative abundance of over 70% and Proteobacteria was predominate in all samples. Denitrifying bacteria, such as Ferritrophicum, Thiobacillus, Thauera and Comamonas dominated in different operation stages of mixotrophic reactor. The decrease in dominant HD bacteria accompanied with the increase in SAD bacteria, and the SAD bacterial richness declined with the rise of HD contribution in the total denitrification process. Correlation networks analysis indicated that the dominant bacteria had positive or negative correlation with each other, but a stable coexistence state of microbial community structure was formed under the mixotrophic conditions. This work deepens our understanding of HSAD and reveals the interconnection between nitrogen removal mechanism and microbial community composition variation.
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Affiliation(s)
- Yingying Li
- Beijing Key Lab for Source Control Technology of Water Pollution, Beijing Forestry University, Beijing 100083, China; College of Ecology and Environment, Hebei University, Baoding 071002, China
| | - Ling Liu
- College of Ecology and Environment, Hebei University, Baoding 071002, China
| | - Hongjie Wang
- Beijing Key Lab for Source Control Technology of Water Pollution, Beijing Forestry University, Beijing 100083, China; College of Ecology and Environment, Hebei University, Baoding 071002, China.
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Qiu J, Li X, Peng Y, Jiang H. Advanced nitrogen removal from landfill leachate via a two-stage combined process of partial nitrification-Anammox (PNA) and partial denitrification-Anammox (PDA). THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 810:151186. [PMID: 34699827 DOI: 10.1016/j.scitotenv.2021.151186] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Revised: 10/18/2021] [Accepted: 10/20/2021] [Indexed: 06/13/2023]
Abstract
In this study, a two-stage combined process of partial nitrification-Anammox (PNA) and partial denitrification-Anammox (PDA) was established achieving advanced nitrogen removal from landfill leachate. The PNA sludge used to treat reject water adapted to the leachate in 37 days, resulting in fast start-up of the PNA process with a nitrogen removal rate (NRR) of 0.22 kgN/(m3·d). Partial denitrification (PD) was induced using sodium acetate and proceeded in a stepwise manner using sludge fermentation liquid (SFL), achieving a NO3--N to NO2--N transformation ratio (NTR) of 52.1 ± 1.1% within 16 days. PDA was established via the addition of mature Anammox biofilms. The nitrogen removal efficiency (NRE) of this system was 97.6 ± 1.5%, of which PNA and PDA contributed 74.8 ± 4.0% and 18.7 ± 4.1%, respectively. Nitrosomonas (2.6% in PNA), Thauera (16.0% in PDA) and Candidatus Brocadia (23.0% in PNA, 1.4% in PDA) were dominant in the two-stage system. This study provides valuable and novel insights, supporting the practical application of PNA-PDA processes in landfill sites.
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Affiliation(s)
- Jingang Qiu
- National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Engineering Research Center of Beijing, Beijing University of Technology, Beijing 100124, PR China
| | - Xiyao Li
- National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Engineering Research Center of Beijing, Beijing University of Technology, Beijing 100124, PR China
| | - Yongzhen Peng
- National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Engineering Research Center of Beijing, Beijing University of Technology, Beijing 100124, PR China..
| | - Hao Jiang
- National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Engineering Research Center of Beijing, Beijing University of Technology, Beijing 100124, PR China
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Babaei S, Sabour MR, Moftakhari Anasori Movahed S. Combined landfill leachate treatment methods: an overview. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:59594-59607. [PMID: 34510344 DOI: 10.1007/s11356-021-16358-0] [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: 04/22/2021] [Accepted: 09/01/2021] [Indexed: 06/13/2023]
Abstract
Landfill leachate is commonly heavily contaminated and consists of high amount of organic compounds, inorganic salts, toxic gases, halogenated hydrocarbons, and heavy metals that exerts a serious threat to public health and the environment. Thus, it requires treatments before direct release into receiving waters. Selecting the efficient method for leachate treatment is still a major challenge. While physicochemical treatment methods such as coagulation-flocculation, adsorption, membrane filtration, ozonation, air stripping, and advanced oxidation processes (AOP) are appropriate for mature leachate, young leachate requires biological treatments including membrane bioreactor (MBR), activated sludge (AS), upflow anaerobic sludge blanket (UASB), and rotational biological contactor (RBC). Recently, the integration of biological processes and physicochemical methods has been demonstrated to be very efficient. It is found that combined coagulation-flocculation/nanofiltration and activated sludge/reverse osmosis are more efficacious than other integrated physicochemical methods and combined physicochemical/biological methods, respectively.
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Affiliation(s)
- Shamimeh Babaei
- Faculty of Civil Engineering, K. N. Toosi University of Technology, Tehran, Iran
| | - Mohammad Reza Sabour
- Faculty of Civil Engineering, K. N. Toosi University of Technology, Tehran, Iran
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Fang D, Wang J, Cui D, Dong X, Tang C, Zhang L, Yue D. Recent Advances of Landfill Leachate Treatment. J Indian Inst Sci 2021. [DOI: 10.1007/s41745-021-00262-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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10
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Wang W, Li D, Li S, Wei Z, Zeng H, Zhang J. Insight into enrichment of anaerobic ammonium oxidation bacteria in anammox granulation under decreasing temperature and no strict anaerobic condition: Comparison between continuous and sequencing batch feeding strategies. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 787:147601. [PMID: 34000529 DOI: 10.1016/j.scitotenv.2021.147601] [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: 04/11/2021] [Revised: 05/04/2021] [Accepted: 05/04/2021] [Indexed: 06/12/2023]
Abstract
A continuous flow reactor (CFR) and a sequencing batch reactor (SBR) were operated in parallel to investigate the difference between anammox granulation in CFR and SBR under decreasing temperature and no strict anaerobic condition. The results showed that the biomass achieved initial granulation successfully (D [4, 3] = 280.44 and 346.28 μm) in both CFR and SBR on day 70. Compared with SBR, a better performance (0.33 kg N m-3 d-1) was gotten in CFR due to a better retention capacity of biomass (1397 mg L-1), when seasonal drop of water temperature occurred (18-14 °C). Thus, different operations led to different granulation styles of anammox. Granules in CFR had better rheological properties than that in SBR. Based on a stable and suitable environment provided by CFR, anaerobic ammonium oxidation bacteria (AnAOB) are able to self-aggregate easily and secret extracellular polymeric substances (EPS), which can capture other bacteria as home guardians. In SBR, AnAOB live inside the tan granules under the protection of other bacteria and thick EPS; other aggregations stick to solid carrier surface to form biofilm.
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Affiliation(s)
- Wenqiang Wang
- Key Laboratory of Water Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100123, China.
| | - Dong Li
- Key Laboratory of Water Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100123, China.
| | - Shuai Li
- Key Laboratory of Water Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100123, China
| | - Ziqing Wei
- Key Laboratory of Water Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100123, China
| | - Huiping Zeng
- Key Laboratory of Water Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100123, China
| | - Jie Zhang
- Key Laboratory of Water Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100123, China; State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China
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Duyar A, Ciftcioglu V, Cirik K, Civelekoglu G, Uruş S. Treatment of landfill leachate using single-stage anoxic moving bed biofilm reactor and aerobic membrane reactor. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 776:145919. [PMID: 33640548 DOI: 10.1016/j.scitotenv.2021.145919] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Revised: 02/11/2021] [Accepted: 02/11/2021] [Indexed: 06/12/2023]
Abstract
Landfill leachate (LFL) is one of the most serious environmental problems due to the high concentrations of toxic and hazardous matters. Although several physical, chemical, methods have been tested, biological processes and single or multiple-stage combinations of them have been receiving more attention due to their cost-effective and environmentally-friendly manner. The present work recommended coupling of conventional single-stage A/O with moving bed biofilm reactor and membrane bioreactor (AnoxMBBR/AeMBR) for LFL treatment. The system performance was evaluated for 233 d under varying nitrate concentrations (100-1000 mgNO3--N/L), sludge retention time (SRT) (30-90 d), and HRT (24-48 h) in AnoxMBBR, and constant SRT (infinite) and HRT (48 h) in the AeMBR. The best system performances were observed at 1000 mgNO3--N/L concentration, SRT of 90 d and HRT of 48 h, and the average removal efficiencies of chemical oxygen demand (COD), ammonia nitrogen (NH4+-N), and nitrate‑nitrogen (NO3-N) were 74.2%, 99.7%, and 89.1%, respectively. Besides, the AeMBR was achieved above 99% NH4+-N removal and not adversely affected by varying operation conditions of AnoxMBBR. A slight increase in selected phthalic acid ester (PAE) concentrations (diethyl phthalate (DEP), di (2-Ethylhexyl) phthalate (DEHP), diisononyl phthalate (DINP)) was detected in the AnoxMBR, and complete PAEs removal was attained in the AeMBR. Mg, Al, Si, Na, Fe was detected by SEM-EDX analyses in both biofilm of AnoxMBBR and the cake layers of AeMBR. Nitrobacter and Nitratireductor which showed a relatively high abundance played an important role in the removal of NH4+-N and COD in LFL. The results confirmed that the proposed sequence is efficient for COD removal, nitrogen removal, and PAEs being an acceptable treatment for landfill leachates.
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Affiliation(s)
- Ahmet Duyar
- Department of Environmental Engineering, Suleyman Demirel University, 32260 Isparta, Turkey; University-Industry-Public Collaboration, Research-Development-Application Centre, Kahramanmaras Sutcu Imam University, 46050 Kahramanmaras¸ Turkey.
| | - Vildan Ciftcioglu
- Department of Bioengineering and Sciences, Kahramanmaras Sutcu Imam University, 46050 Kahramanmaras Turkey
| | - Kevser Cirik
- Department of Environmental Engineering, Kahramanmaras Sutcu Imam University, 46050 Kahramanmaras¸ Turkey; Research and Application Center for Environmental Concerns, Kahramanmaras Sutcu Imam University, 46050 Kahramanmaras¸ Turkey.
| | - Gokhan Civelekoglu
- Department of Environmental Engineering, Akdeniz University, 07058 Antalya, Turkey.
| | - Serhan Uruş
- Department of Chemistry, Kahramanmaras Sutcu Imam University, 46050 Kahramanmaras¸ Turkey.
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12
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Li H, Li K, Guo J, Chen Z, Han Y, Song Y, Lu C, Hou Y, Zhang D, Zhang Y. The effect of step-feeding distribution ratio on high concentration perchlorate removal performance in ABR system with heterotrophic combined sulfur autotrophic process. JOURNAL OF HAZARDOUS MATERIALS 2021; 411:125151. [PMID: 33485237 DOI: 10.1016/j.jhazmat.2021.125151] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Revised: 12/07/2020] [Accepted: 01/04/2021] [Indexed: 06/12/2023]
Abstract
In a lab-scale anaerobic baffled reactor (ABR) with eight compartments, the heterotrophic and sulfur autotrophic processes were combined to remove perchlorate. And then, the step-feeding distribution ratio of the heterotrophic perchlorate reduction unit (HPR unit) was optimized to achieve efficient removal of high concentration perchlorate. Under the optimized step-feeding distribution ratio, the perchlorate removal efficiency reached to 99.8% with the influent concentration of 1300 mg/L, indicating that the removal performance of step-feeding was better than that of normal-feeding. A mass balance results showed that the perchlorate removal capacity of the C1-C5 compartments were 11.8 ± 0.6, 13.2 ± 0.2, 11.7 ± 1.0, 8.8 ± 0.2 and 9.8 ± 1.0 g/d during the stage VIII, indicating that the step-feeding can effectively relieve pollutant loading of C1 compartment and improve the perchlorate removal capacity of the C2-C5 compartments. Moreover, the high-throughput sequencing analysis showed that bacterial community was significant difference between the HPR and sulfur autotrophic perchlorate removal (SAPR) units. Principal component analysis (PCA) showed that perchlorate removal was more positive correlation with the forward compartments than the posterior compartments of HPR unit. The study confirms that the optimized step-feeding ratio is beneficial to remove the high concentration perchlorate via combining heterotrophic and sulfur autotrophic processes.
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Affiliation(s)
- Haibo Li
- Tianjin Key Laboratory of Aquatic Science and Technology, School of Environmental and Municipal Engineering, Tianjin Chengjian University, Jinjing Road 26#, Tianjin 300384, PR China
| | - Kun Li
- Tianjin Key Laboratory of Aquatic Science and Technology, School of Environmental and Municipal Engineering, Tianjin Chengjian University, Jinjing Road 26#, Tianjin 300384, PR China
| | - Jianbo Guo
- Tianjin Key Laboratory of Aquatic Science and Technology, School of Environmental and Municipal Engineering, Tianjin Chengjian University, Jinjing Road 26#, Tianjin 300384, PR China.
| | - Zhi Chen
- Department of Building, Civil and Environmental Engineering, Concordia University, 1455 de Maisonneuve Blvd. W. Montreal, Quebec, Canada
| | - Yi Han
- Tianjin Key Laboratory of Aquatic Science and Technology, School of Environmental and Municipal Engineering, Tianjin Chengjian University, Jinjing Road 26#, Tianjin 300384, PR China
| | - Yuanyuan Song
- Tianjin Key Laboratory of Aquatic Science and Technology, School of Environmental and Municipal Engineering, Tianjin Chengjian University, Jinjing Road 26#, Tianjin 300384, PR China
| | - Caicai Lu
- Tianjin Key Laboratory of Aquatic Science and Technology, School of Environmental and Municipal Engineering, Tianjin Chengjian University, Jinjing Road 26#, Tianjin 300384, PR China
| | - Yanan Hou
- Tianjin Key Laboratory of Aquatic Science and Technology, School of Environmental and Municipal Engineering, Tianjin Chengjian University, Jinjing Road 26#, Tianjin 300384, PR China
| | - Daohong Zhang
- Tianjin Key Laboratory of Aquatic Science and Technology, School of Environmental and Municipal Engineering, Tianjin Chengjian University, Jinjing Road 26#, Tianjin 300384, PR China
| | - Yousuo Zhang
- CCCC-TDC Harbour Construction Engineering Co., Ltd., Huanggu Dongheng street 8#, Tianjin 300450, China
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13
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Ritigala T, Chen Y, Zheng J, Demissie H, Zheng L, Yu D, Sui Q, Chen M, Zhu J, Fan H, Li J, Gao Q, Weragoda SK, Weerasooriya R, Jinadasa KBSN, Wei Y. Comparison of an integrated short-cut biological nitrogen removal process with magnetic coagulation treating swine wastewater and food waste digestate. BIORESOURCE TECHNOLOGY 2021; 329:124904. [PMID: 33676354 DOI: 10.1016/j.biortech.2021.124904] [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: 01/18/2021] [Revised: 02/20/2021] [Accepted: 02/20/2021] [Indexed: 06/12/2023]
Abstract
An integration of two processes, magnetic coagulation (MC) and short-cut biological nitrogen removal (SBNR), coupled with a sequencing batch membrane bioreactor (SMBR) controlled by an automatic real-time control strategy (RTC), was developed to treat different characteristics of high strength wastewater. The treatment efficiency and microbial community-diversity of the proposed method was evaluated and investigated using swine wastewater and food waste (FW) digestate. The MC showed high removal of TSS (89.1 ± 1.5%, 92.21 ± 1.8%), turbidity (90.58 ± 2.1%, 95.1 ± 2.1%), TP (88.5 ± 1.9%, 92.1 ± 1.5%), phosphate (87.76 ± 1.6%, 91.22 ± 1.5%), and SMBR achieved stable and excellent removal of COD (96.05 ± 0.2%, 97.39 ± 0.2%), TN (97.30 ± 0.3%, 97.44 ± 0.3%) andNH4+-N (99.07 ± 0.2%, 98.54 ± 0.2%) for swine wastewater and FW digestate, respectively. The effluent COD andNH4+-N concentrations were found to meet their discharge standards. The microbial community comparison showed similar diversity and richness, and genus Diaphorobacter and Thaurea were dominant in denitritation, and Nitrosomonas was dominant in nitritation treating both swine wastewater and FW digestate.
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Affiliation(s)
- Tharindu Ritigala
- State Key Joint Laboratory of Environmental Simulation and Pollution Control, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; Laboratory of Water Pollution Control Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yanlin Chen
- State Key Joint Laboratory of Environmental Simulation and Pollution Control, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; Laboratory of Water Pollution Control Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Jiaxi Zheng
- State Key Joint Laboratory of Environmental Simulation and Pollution Control, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; Laboratory of Water Pollution Control Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Hailu Demissie
- State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China; Department of Chemistry College of Natural Sciences, Arbaminch University, 1000, Ethiopia
| | - Libing Zheng
- State Key Joint Laboratory of Environmental Simulation and Pollution Control, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; Laboratory of Water Pollution Control Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Dawei Yu
- State Key Joint Laboratory of Environmental Simulation and Pollution Control, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; Laboratory of Water Pollution Control Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Qianwen Sui
- State Key Joint Laboratory of Environmental Simulation and Pollution Control, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; Laboratory of Water Pollution Control Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Meixue Chen
- State Key Joint Laboratory of Environmental Simulation and Pollution Control, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; Laboratory of Water Pollution Control Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Jinxing Zhu
- Beijing Environmental Engineering Technology Co., Ltd, Beijing 100101, China
| | - Hua Fan
- Beijing Environmental Engineering Technology Co., Ltd, Beijing 100101, China
| | - Jiao Li
- Beijing Environmental Engineering Technology Co., Ltd, Beijing 100101, China
| | - Qian Gao
- State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | | | - Rohan Weerasooriya
- National Institute of Fundamental Studies, Hantana Road, Kandy 20000, Sri Lanka
| | - K B S N Jinadasa
- Department of Civil Engineering, Faculty of Engineering, University of Peradeniya, Peradeniya 20400, Sri Lanka
| | - Yuansong Wei
- State Key Joint Laboratory of Environmental Simulation and Pollution Control, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; Laboratory of Water Pollution Control Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China; National Institute of Fundamental Studies, Hantana Road, Kandy 20000, Sri Lanka.
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14
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Keyikoglu R, Karatas O, Rezania H, Kobya M, Vatanpour V, Khataee A. A review on treatment of membrane concentrates generated from landfill leachate treatment processes. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2020.118182] [Citation(s) in RCA: 49] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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15
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Liu J, Zhang P, Tian Z, Xu R, Wu Y, Song Y. Pollutant removal from landfill leachate via two-stage anoxic/oxic combined membrane bioreactor: Insight in organic characteristics and predictive function analysis of nitrogen-removal bacteria. BIORESOURCE TECHNOLOGY 2020; 317:124037. [PMID: 32866838 DOI: 10.1016/j.biortech.2020.124037] [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: 07/17/2020] [Revised: 08/15/2020] [Accepted: 08/17/2020] [Indexed: 06/11/2023]
Abstract
A two-stage anoxic/oxic combined membrane bioreactor (A/O-A/O-MBR) was operated for 81 d to treat landfill leachate under different reflux ratios (R). The best performance was found under R = 150%, where the chemical oxygen demand (COD), ammonium (NH4+-N) and total nitrogen (TN) removal was 85.6%, 99.3%, and 80.7%, respectively. Particularly, the highest pollutant removal was achieved in the second-stage A/O, where the COD and TN removal capacity was 78.88 and 11.74 g/d, respectively. Meantime, DOM removal was 83.9%, where the removal of aromatic protein substances I and II, fulvic acids-like compounds, soluble microbial products and humic acids-like compounds was 93.4%, 86.4%, 72.0%, 86.6% and 59.4%, respectively. The gene functions of microbial community in the process showed that amoA, hao, nirK and nosZ, etc. were the core genes for nitrification and denitrification. The carbon source for denitrification might come from the conversion of refractory organic matters in landfill leachate.
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Affiliation(s)
- Jianbo Liu
- College of Environmental Science and Engineering, Beijing Forestry University, Beijing 100083, PR China; College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China
| | - Panyue Zhang
- College of Environmental Science and Engineering, Beijing Forestry University, Beijing 100083, PR China; College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; School of Environmental and Chemical Engineering, Chongqing Three Gorges University, Chongqing 404632, PR China.
| | - Zhiyong Tian
- Department of Urban Water Environmental Research, Chinese Research Academy of Environmental Sciences, Beijing 100012, PR China
| | - Rui Xu
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China
| | - Yan Wu
- School of Environmental and Chemical Engineering, Chongqing Three Gorges University, Chongqing 404632, PR China
| | - Yonghui Song
- Department of Urban Water Environmental Research, Chinese Research Academy of Environmental Sciences, Beijing 100012, PR China
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16
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Liu J, Zhang L, Zhang P, Zhou Y. Quorum quenching altered microbial diversity and activity of anaerobic membrane bioreactor (AnMBR) and enhanced methane generation. BIORESOURCE TECHNOLOGY 2020; 315:123862. [PMID: 32702577 DOI: 10.1016/j.biortech.2020.123862] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2020] [Revised: 07/12/2020] [Accepted: 07/14/2020] [Indexed: 06/11/2023]
Abstract
A facultative bacterium Microbacterium sp. (QQ strain) was found significantly mitigated membrane biofouling and also increased methane production. It was found genera Nitrospira, norank-c-Bacterodetes vadinHA17, Trichococcus and family Anaerolineaceae were likely responsible for membrane biofouling. The presence of QQ strain increased the total abundance of fermentative and acetogenic genera by 0.61% and 379.61%, respectively, but had a minor effect on the abundance of methanogens. The increased methane production was likely due to the strengthened methanogenic activity and more available substrates. Homo-acetogenic Treponema was enriched (9.01%) in the presence of QQ strain suggesting that apart from hydrogenotrophic methanogenic pathway, extra CH4 could be also produced from the additional acetate synthesized via homo-acetogenic pathway. This study advances knowledge about the effects of QQ strain on microbial communities, microbiota biofouling behavior and anaerobic fermentation process in AnMBRs.
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Affiliation(s)
- Jianbo Liu
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, China; Advanced Environmental Biotechnology Centre, Nanyang Environment & Water Research Institute, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore
| | - Liang Zhang
- Advanced Environmental Biotechnology Centre, Nanyang Environment & Water Research Institute, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore
| | - Panyue Zhang
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, China
| | - Yan Zhou
- Advanced Environmental Biotechnology Centre, Nanyang Environment & Water Research Institute, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore; School of Civil and Environmental Engineering, Nanyang Technological University, Singapore 639798, Singapore.
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17
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Wang H, Li Y, Zhang S, Li D, Liu X, Wang W, Liu L, Wang Y, Kang L. Effect of influent feeding pattern on municipal tailwater treatment during a sulfur-based denitrification constructed wetland. BIORESOURCE TECHNOLOGY 2020; 315:123807. [PMID: 32731159 DOI: 10.1016/j.biortech.2020.123807] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Revised: 07/01/2020] [Accepted: 07/04/2020] [Indexed: 06/11/2023]
Abstract
This work studied three parallel pilot-scale constructed wetlands based on sulfur-based autotrophic denitrification (SAD-CWs) with horizontal, vertical-horizontal and integrated vertical inflow for nitrogen removal of municipal tailwater. SAD system played the predominant role for nitrate removal and the integrated vertical inflow pattern was the most efficient pattern with 96.1% NO3--N and 44.3% total phosphorus (TP) removal efficiency, respectively, at the condition of 3.5 h hydraulic retention time (HRT) and 18.5-23.5 °C. Although no great and serious change for microbial community structure was observed among these systems, the diversity in term of abundance of microbes and certain function species was observed. Proteobacteria, Ignavibacterae and Chloroflexi were the dominant phyla and accounted for over 59.1%, 7.5%, and 6.0% in SAD-CWs, respectively. Moreover, the richness and diversity of denitrifies in SAD-CWs with integrated vertical inflow were both higher than that in the other two reactors, especially sulfur autotrophic denitrifying bacteria.
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Affiliation(s)
- Hongjie Wang
- Xiong'an Institute of Eco-Environment, Hebei University, Baoding 071002, China; Institute of Life Science and Green Development, Hebei University, China; Institute of Ecology and Environmental Governance,College of Life Sciences, Hebei University, China
| | - Yingying Li
- Xiong'an Institute of Eco-Environment, Hebei University, Baoding 071002, China; Institute of Life Science and Green Development, Hebei University, China; Institute of Ecology and Environmental Governance,College of Life Sciences, Hebei University, China
| | - Shengqi Zhang
- Xiong'an Institute of Eco-Environment, Hebei University, Baoding 071002, China; Institute of Life Science and Green Development, Hebei University, China; Institute of Ecology and Environmental Governance,College of Life Sciences, Hebei University, China
| | - Duo Li
- Xiong'an Institute of Eco-Environment, Hebei University, Baoding 071002, China; Institute of Life Science and Green Development, Hebei University, China; Institute of Ecology and Environmental Governance,College of Life Sciences, Hebei University, China
| | - Xingchun Liu
- Xiong'an Institute of Eco-Environment, Hebei University, Baoding 071002, China; Institute of Life Science and Green Development, Hebei University, China; Institute of Ecology and Environmental Governance,College of Life Sciences, Hebei University, China
| | - Wenjing Wang
- Xiong'an Institute of Eco-Environment, Hebei University, Baoding 071002, China; Institute of Life Science and Green Development, Hebei University, China; Institute of Ecology and Environmental Governance,College of Life Sciences, Hebei University, China
| | - Ling Liu
- Xiong'an Institute of Eco-Environment, Hebei University, Baoding 071002, China; Institute of Life Science and Green Development, Hebei University, China; Institute of Ecology and Environmental Governance,College of Life Sciences, Hebei University, China
| | - Yali Wang
- Xiong'an Institute of Eco-Environment, Hebei University, Baoding 071002, China; Institute of Life Science and Green Development, Hebei University, China; Institute of Ecology and Environmental Governance,College of Life Sciences, Hebei University, China.
| | - Le Kang
- Institute of Life Science and Green Development, Hebei University, China; Institute of Ecology and Environmental Governance,College of Life Sciences, Hebei University, China
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18
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Chen X, Wang X, Zhong Z, Deng C, Chen Z, Chen X. Biological nitrogen removal via combined processes of denitrification, highly efficient partial nitritation and Anammox from mature landfill leachate. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:29408-29421. [PMID: 32440874 DOI: 10.1007/s11356-020-09185-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2020] [Accepted: 05/04/2020] [Indexed: 06/11/2023]
Abstract
The combined processes of pre-denitrification, highly efficient partial nitritation and Anammox were developed to treat mature landfill leachate. In the partial nitritation stage, an outstanding nitrite production rate (NPR) of approximately 1.506 kg·(m3 day)-1 of mature landfill leachate was achieved in a zeolite biological aerated filter (ZBAF) due to the inhibition of nitrite-oxidizing bacteria (NOB) by free ammonia (FA) and free nitrous acid (FNA). With respect to the nitrogen removal performance of the combined process, remarkable nitrogen removal efficiencies (NRE) and nitrogen removal rates (NRR), which exceeded 90.0% and 0.490 kg·(m3 day)-1, respectively, were detected based on the stable and efficient partial nitritation performance and reasonable control of effluent nitrite to ammonium ratios (at approximately 1.2) in the ZBAF. High-throughput sequencing analysis further revealed that the dominant bacteria genera Paracoccus and Comamonas in the denitrification reactor, Nitrosomonas in the ZBAF and Candidatus Kuenenia and Candidatus Anammoxoglobus in the Anammox reactor were demonstrated to be responsible for denitrification, partial nitritation and Anammox process, respectively.
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Affiliation(s)
- Xiaozhen Chen
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, China
- The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, Guangzhou, China
| | - Xiaojun Wang
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, China.
- The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, Guangzhou, China.
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, China.
- Hua An Biotech Co., Ltd., Foshan, 528300, China.
| | - Zhong Zhong
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, China
- The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, Guangzhou, China
| | - Cuilan Deng
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, China
- The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, Guangzhou, China
| | - Zhenguo Chen
- Hua An Biotech Co., Ltd., Foshan, 528300, China
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, 510006, China
| | - Xiaokun Chen
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, China
- The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, Guangzhou, China
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19
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Single reactor nitritation-denitritation for high strength digested biosolid thickening lagoon supernatant treatment. Biochem Eng J 2020. [DOI: 10.1016/j.bej.2020.107630] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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20
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Kanyatrakul A, Prakhongsak A, Honda R, Phanwilai S, Treesubsuntorn C, Boonnorat J. Effect of leachate effluent from activated sludge and membrane bioreactor systems with acclimatized sludge on plant seed germination. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 724:138275. [PMID: 32408458 DOI: 10.1016/j.scitotenv.2020.138275] [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: 12/08/2019] [Revised: 02/29/2020] [Accepted: 03/26/2020] [Indexed: 06/11/2023]
Abstract
This research comparatively investigates the effect of landfill leachate effluent of two biological treatment schemes on germination of Lactuca sativa and Vigna radiata. The treatment schemes are two-stage activated sludge (AS) and two-stage membrane bioreactor (MBR) systems with acclimatized seed sludge. The AS and MBR are operated under two concentrations of landfill leachate influent: moderate (condition 1) and elevated (condition 2). The results show that, under condition 1, the AS and MBR efficiently remove 80-96% of organic compounds and nutrients and 81-100% of harmful micropollutants. Under condition 2 with elevated influent concentration, MBR is more effective in biodegrading micropollutants than the AS system. The germination rate (GR) and germination seed index (GSI) of L. sativa and V. radiata germinated with AS and MBR effluent from condition 1 are 100% and 1.29-1.56. Under condition 2, the GR and GSI with AS effluent are reduced to 80% and 0.65-0.77, while those with MBR effluent are 100% and 1.27-1.38. Quantitative real-time polymerase chain reaction (qPCR) analysis indicates that the bacterial community in the MBR is more abundant than in the AS, especially ammonia oxidizing bacteria, Nitrobacter, and Nitrospira, which aid heterotrophic bacteria in biodegradation of micropollutants and promote the growth of heterotrophs. The bacterial abundance and community composition render the MBR scheme more operationally suitable for elevated landfill-leachate influent concentrations. By comparison, the MBR system is more effective in removal of micropollutants than the AS, as evidenced by higher GR and GSI. The technology also could potentially be applied to water reclamation. A lack of technological and financial resources in many developing countries nevertheless precludes the adoption of MBR despite higher pollutant removal efficiency. An alternative solution is the use of acclimatized seed sludge in AS system to enhance treatment efficiency, especially in influent with low concentrations of micropollutants. In addition, the seed germination results suggest the possibility of water reuse in agriculture.
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Affiliation(s)
- Alongkorn Kanyatrakul
- Department of Environmental Engineering, Faculty of Engineering, Rajamangala University of Technology Thanyaburi (RMUTT), Klong 6, Pathum Thani 12110, Thailand
| | - Apichai Prakhongsak
- Department of Environmental Engineering, Faculty of Engineering, Rajamangala University of Technology Thanyaburi (RMUTT), Klong 6, Pathum Thani 12110, Thailand
| | - Ryo Honda
- Faculty of Geosciences and Civil Engineering, Institute of Science and Engineering, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan
| | - Supaporn Phanwilai
- Department of Environmental Engineering, Faculty of Engineering, Kasetsart University, Jatujak, Bangkok 10900, Thailand
| | - Chairat Treesubsuntorn
- Pilot Plant Development and Training Institute, King Mongkut's University of Technology Thonburi (KMUTT), Bangkhuntien, Bangkok 10150, Thailand
| | - Jarungwit Boonnorat
- Department of Environmental Engineering, Faculty of Engineering, Rajamangala University of Technology Thanyaburi (RMUTT), Klong 6, Pathum Thani 12110, Thailand.
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21
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Roy D, Lemay JF, Drogui P, Tyagi RD, Landry D, Rahni M. Identifying the link between MBRs' key operating parameters and bacterial community: A step towards optimized leachate treatment. WATER RESEARCH 2020; 172:115509. [PMID: 31986399 DOI: 10.1016/j.watres.2020.115509] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2019] [Revised: 01/07/2020] [Accepted: 01/13/2020] [Indexed: 06/10/2023]
Abstract
A MBR treating compost leachate was studied in order to link the operating parameters (solid and hydraulic retention time) to contaminant's specific bacterial catabolic activity. In this context, a lab-scale aerobic membrane bioreactor was operated for 200 days, at solid retention times (SRT) of 30 and 45 days and four different contaminant load rates. Results showed that increasing the food to microorganism ratio (F/M) by increasing the contaminant load rates lessened the selectivity pressure, which allowed the proliferation of subdominant operational taxonomic units (OTU) (relative abundance >3%) that were otherwise inhibited by highly adapted dominant OTUs (relative abundance >10%). Subsequently, increasing the SRT resulted in a lower species richness and the selection of two dominant types of bacteria: 1) genera with low growth rates that feed on non-limiting substrates or substrates with few competitors, and 2) genera with metabolisms that are highly specific to the available substrates and that can outcompete the other genera by using the substrate more efficiently. The bacterial population evolution observed during this study suggests that the mixed liquor population diversity and structure can be modulated with the operating conditions for the bioenhancement of contaminant specific catabolic activity. Identified dominant and subdominant genera were linked to the MBR's NH4+ and COD removal performances. Interestingly, nitrification performances were unaffected by the organic load rate and the Nitrosomonas relative abundance.
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Affiliation(s)
- Dany Roy
- INRS, 490, Rue de la Couronne, Québec, Qc, G1K 9A9, Canada
| | | | - Patrick Drogui
- INRS, 490, Rue de la Couronne, Québec, Qc, G1K 9A9, Canada.
| | | | - Dany Landry
- Englobe Corp., 505 Boul. de Parc Technologique, Québec, Qc, G1P 4S7, Canada
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22
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Talebi A, Razali YS, Ismail N, Rafatullah M, Azan Tajarudin H. Selective adsorption and recovery of volatile fatty acids from fermented landfill leachate by activated carbon process. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 707:134533. [PMID: 31865088 DOI: 10.1016/j.scitotenv.2019.134533] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2019] [Revised: 08/30/2019] [Accepted: 09/17/2019] [Indexed: 06/10/2023]
Abstract
An adsorption-desorption process was applied on fermented landfill leachate to adsorb and recover acetic and butyric acid, using activated carbon. In this study, the first, volatile fatty acids adsorption process from fermented leachate was optimized, by investigating various affecting factors such as pH, time, agitation speed, activated carbon dosage, and temperature. The optimum condition for maximum adsorption of 88.94% acetic acid and 98.53% butyric acid, was 19.79 %wt activated carbon dosage, 40.00 rpm of agitation speed, in 9.45 °C and contact time of 179.89 h, while the pH of the substrate was kept fixed at pH:3.0. Results of X-ray fluorescence (XRF) spectrometry, X-ray diffraction (XRD), Fourier transform infrared (FT-IR) and zeta potential revealed that carbon is the dominant component in the adsorbent with a significant effect to remove organic impurities, and it was observed that the activated carbon after the adsorption process showed an amorphous structure peak with a large internal surface area and pore volume. The results exposed that the adsorption on the surface of activated carbon was due to the chemisorption, and the chemisorption mechanism was supported by covalent bonding. The kinetic study displayed excellent fit to Pseudo-second order kinetics model. The second phase of this study was to recover the adsorbed VFAs using multistage desorption unit, in which application of deionized water and ethanol (as desorption agents) resulted in 89.1% of acetic acid and 67.8% of the butyric acid recovery.
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Affiliation(s)
- Amir Talebi
- School of Industrial Technology, Universiti Sains Malaysia, Minden, Pulau Pinang 11800, Malaysia
| | - Yasmin Syafikah Razali
- School of Industrial Technology, Universiti Sains Malaysia, Minden, Pulau Pinang 11800, Malaysia
| | - Norli Ismail
- School of Industrial Technology, Universiti Sains Malaysia, Minden, Pulau Pinang 11800, Malaysia
| | - Mohd Rafatullah
- School of Industrial Technology, Universiti Sains Malaysia, Minden, Pulau Pinang 11800, Malaysia
| | - Husnul Azan Tajarudin
- School of Industrial Technology, Universiti Sains Malaysia, Minden, Pulau Pinang 11800, Malaysia; Solid Waste Management, Engineering Campus, Science Engineering Research Centre, Engineering Campus, Nibong Tebal, Pulau Pinang 14000, Malaysia.
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23
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Song J, Li Q, Dzakpasu M, Wang XC, Chang N. Integrating stereo-elastic packing into ecological floating bed for enhanced denitrification in landscape water. BIORESOURCE TECHNOLOGY 2020; 299:122601. [PMID: 31874787 DOI: 10.1016/j.biortech.2019.122601] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Revised: 12/05/2019] [Accepted: 12/10/2019] [Indexed: 06/10/2023]
Abstract
The effects of stereo-elastic packing, as additional bio-carriers, on nitrogen removal in enhanced ecological floating beds (EFBs) are evaluated. Enhanced EFBs with additional stereo-elastic packing was demonstrated to enhance maximum TN removal efficiency (65.8%) over that of EFBs with plant and ceramisite only (54.9%). Performance enhancement was attributable to a 40.6% increase in sediment N accretion and intensification of denitrification by biomass on other carriers in the presence of stereo-elastic packing. Nonetheless, nitrogen uptake by plants was inhibited slightly. Stereo-elastic packing intensified denitrification rates on plant roots and ceramisite by increasing the attached biomass and enhancing the biomass activity, albeit to different extents. The increase in denitrification rate on plant root by 25.7% was significantly higher than that of 4.6% on ceramisite via increased NO2-N removal. Moreover, bacterial diversity on the carriers was significantly altered, and the enrichment of genera such as Aridibacter, Hyphomicrobium and Gemmobacter promoted denitrification processes.
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Affiliation(s)
- Jia Song
- International Science and Technology Cooperation Center for Urban Alternative Water Resources Development, Shaanxi, China; Key Laboratory of Northwest Water Resource, Environment and Ecology, MOE, Engineering Technology Research Center for Wastewater Treatment and Reuse, Shaanxi, China; Key Laboratory of Environmental Engineering, Shaanxi, China; Xi'an University of Architecture and Technology, No. 13 Yanta Road, Xi'an 710055, China
| | - Qian Li
- International Science and Technology Cooperation Center for Urban Alternative Water Resources Development, Shaanxi, China; Key Laboratory of Northwest Water Resource, Environment and Ecology, MOE, Engineering Technology Research Center for Wastewater Treatment and Reuse, Shaanxi, China; Key Laboratory of Environmental Engineering, Shaanxi, China; Xi'an University of Architecture and Technology, No. 13 Yanta Road, Xi'an 710055, China.
| | - Mawuli Dzakpasu
- International Science and Technology Cooperation Center for Urban Alternative Water Resources Development, Shaanxi, China; Key Laboratory of Northwest Water Resource, Environment and Ecology, MOE, Engineering Technology Research Center for Wastewater Treatment and Reuse, Shaanxi, China; Key Laboratory of Environmental Engineering, Shaanxi, China; Xi'an University of Architecture and Technology, No. 13 Yanta Road, Xi'an 710055, China
| | - Xiaochang C Wang
- International Science and Technology Cooperation Center for Urban Alternative Water Resources Development, Shaanxi, China; Key Laboratory of Northwest Water Resource, Environment and Ecology, MOE, Engineering Technology Research Center for Wastewater Treatment and Reuse, Shaanxi, China; Key Laboratory of Environmental Engineering, Shaanxi, China; Xi'an University of Architecture and Technology, No. 13 Yanta Road, Xi'an 710055, China
| | - Nini Chang
- International Science and Technology Cooperation Center for Urban Alternative Water Resources Development, Shaanxi, China; Key Laboratory of Northwest Water Resource, Environment and Ecology, MOE, Engineering Technology Research Center for Wastewater Treatment and Reuse, Shaanxi, China; Key Laboratory of Environmental Engineering, Shaanxi, China; Xi'an University of Architecture and Technology, No. 13 Yanta Road, Xi'an 710055, China
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Song J, Zhang W, Gao J, Hu X, Zhang C, He Q, Yang F, Wang H, Wang X, Zhan X. A pilot-scale study on the treatment of landfill leachate by a composite biological system under low dissolved oxygen conditions: Performance and microbial community. BIORESOURCE TECHNOLOGY 2020; 296:122344. [PMID: 31708387 DOI: 10.1016/j.biortech.2019.122344] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2019] [Revised: 10/19/2019] [Accepted: 10/24/2019] [Indexed: 05/27/2023]
Abstract
In this work, a pilot-scale low dissolved oxygen (DO) composite biological system (LDOCBS) composed of an anoxic rotating biological contactor (RBC) and four aeration tanks with gradient aeration was used to treat landfill leachate for 88 d. The maximum removals of 85.65%, 99.92% and 84.06% for chemical oxygen demand (COD), ammonia (NH4+-N) and total nitrogen (TN) were achieved, respectively. The three-dimensional exaction and emission matrix (3D-EEM) fluorescence spectroscopy revealed that the biodegradability of leachate was significantly improved by the LDOCBS. Mass balance calculations showed that the COD removal and denitrification process mainly occurred in RBC while 1# contributed primarily to nitrification. High-throughput sequencing analysis indicated that denitrifying bacteria with highly relative abundances of 46.45%-53.81% played key roles in organic degradation and nitrogen removal. This work could add some guiding insights into the cost-efficient treatment of landfill leachate by the composite biological system.
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Affiliation(s)
- Jianyang Song
- School of Civil Engineering, Wuhan University, Wuhan 430072, China; School of Civil Engineering, Nanyang Institute of Technology, Nanyang 473004, China
| | - Wei Zhang
- School of Civil Engineering, Wuhan University, Wuhan 430072, China
| | - Junfeng Gao
- Wuhan Environment Investment & Development Group Municipal Waste Management Co., Ltd, Wuhan 430014, China
| | - Xiaoling Hu
- School of Civil Engineering, Wuhan University, Wuhan 430072, China
| | - Chenlu Zhang
- School of Biological and Chemical Engineering, Nanyang Institute of Technology, Nanyang 473004, China
| | - Qiulai He
- Key Laboratory of Building Safety and Energy Efficiency, Ministry of Education, Department of Water Engineering and Science, College of Civil Engineering, Hunan University, Changsha 410082, China
| | - Fei Yang
- School of Biological and Chemical Engineering, Nanyang Institute of Technology, Nanyang 473004, China
| | - Hongyu Wang
- School of Civil Engineering, Wuhan University, Wuhan 430072, China.
| | - Xueyu Wang
- School of Civil Engineering, Wuhan University, Wuhan 430072, China
| | - Xiang Zhan
- School of Civil Engineering, Wuhan University, Wuhan 430072, China
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Song Y, Li H, Han Y, Lu C, Hou Y, Zhang Y, Guo J. Landfill leachate as an additional substance in the Johannesburg-Sulfur autotrophic denitrification system in the treatment of municipal wastewater with low strength and low COD/TN ratio. BIORESOURCE TECHNOLOGY 2020; 295:122287. [PMID: 31669873 DOI: 10.1016/j.biortech.2019.122287] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2019] [Revised: 10/15/2019] [Accepted: 10/16/2019] [Indexed: 06/10/2023]
Abstract
Johannesburg-Sulfur autotrophic denitrification (JHB-SAD) system was investigated for the combined treatment of leachate and municipal wastewater with low strength and low COD/TN ratio. The average removal efficiencies for chemical oxygen demand (COD), total nitrogen (TN) and total phosphorus (TP) were 85.2%, 96.2% and 75.8%, respectively. The municipal wastewater and leachate (dosing of 2.1‰, v/v) can be treated via the JHB-SAD system to achieve efficient nutrients removal. The mass balance calculations suggested that 58.1-69.8% TN was removed in JHB unit and 32.9-41.2% TN in SAD unit. Further, the denitrifying phosphorus removal process occurred in the anoxic zone. EEM-PARAFAC analysis found that the protein-like materials were more efficiently removed than fulvic-like materials in JHB-SAD system. The tryptophan-like materials had the most positive linear relationship with the COD concentrations. The bacterial community was difference between JHB and SAD unit. Furthermore, bacteria abundance relating to nitrogen removal increased with additional leachate.
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Affiliation(s)
- Yuanyuan Song
- Tianjin Key Laboratory of Aquatic Science and Technology, School of Environmental and Municipal Engineering, Tianjin Chengjian University, Jinjing Road 26#, Tianjin 300384, China
| | - Haibo Li
- Tianjin Key Laboratory of Aquatic Science and Technology, School of Environmental and Municipal Engineering, Tianjin Chengjian University, Jinjing Road 26#, Tianjin 300384, China.
| | - Yi Han
- Tianjin Key Laboratory of Aquatic Science and Technology, School of Environmental and Municipal Engineering, Tianjin Chengjian University, Jinjing Road 26#, Tianjin 300384, China
| | - Caicai Lu
- Tianjin Key Laboratory of Aquatic Science and Technology, School of Environmental and Municipal Engineering, Tianjin Chengjian University, Jinjing Road 26#, Tianjin 300384, China
| | - Yanan Hou
- Tianjin Key Laboratory of Aquatic Science and Technology, School of Environmental and Municipal Engineering, Tianjin Chengjian University, Jinjing Road 26#, Tianjin 300384, China
| | - Yousuo Zhang
- CCCC-TDC Harbour Construction Engineering Co., Ltd., Huanggu Dongheng street 8#, Tianjin 300450, China
| | - Jianbo Guo
- Tianjin Key Laboratory of Aquatic Science and Technology, School of Environmental and Municipal Engineering, Tianjin Chengjian University, Jinjing Road 26#, Tianjin 300384, China
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Liu W, Lian J, Guo J, Zhang C, Guo Y, Niu Y, Duan L. Perchlorate reduction by anaerobic granular sludge under different operation strategies: Performance, extracellular polymeric substances and microbial community. ACTA ACUST UNITED AC 2019. [DOI: 10.1016/j.biteb.2019.100312] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Wilk BK, Fudala-Ksiazek S, Szopińska M, Luczkiewicz A. Landfill leachates and wastewater of maritime origin as possible sources of endocrine disruptors in municipal wastewater. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:25690-25701. [PMID: 31267401 PMCID: PMC6719331 DOI: 10.1007/s11356-019-05566-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2019] [Accepted: 05/23/2019] [Indexed: 05/05/2023]
Abstract
In this study, wastewater from municipal services, such as a port wastewater reception facility (PRF-WW) and a municipal solid waste plant (MSWP), was tested for the presence of the suspected endocrine-disrupting compounds phthalates (PAEs) and bisphenol A (BPA). PAEs and BPA were found in this study in high concentrations in raw wastewater obtained from passenger ships (RMT-WWs) (up to 738 μg/L and 957 μg/L, respectively) collected in the Port of Gdynia and in landfill leachates (LLs) (up to 536 μg/L and up to 2202 μg/L, respectively) from a MSWP located near Gdynia. In particular, the presence of reprotoxic di(2-ethylhexyl) phthalate (DEHP, up to 536 μg/L in LLs and up to 738 μg/L in RMT-WWs) requires further action because if this compound, as well as other PAEs and BPA, is not degraded by activated sludge microorganisms, it may reach receiving waters and adversely impact aquatic organisms. Therefore, PAEs and BPA should be removed either during the onsite pretreatment of tested industrial wastewater or during tertiary treatment at municipal wastewater treatment plants (WWTPs, representing end-of-pipe technology). Graphical abstract.
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Affiliation(s)
- Barbara K. Wilk
- Department of Water and Wastewater Technology, Faculty of Civil and Environmental Engineering, Gdansk University of Technology, 11/12 Narutowicza St., 80-233 Gdansk, Poland
| | - Sylwia Fudala-Ksiazek
- Department of Sanitary Engineering, Faculty of Civil and Environmental Engineering, Gdansk University of Technology, 11/12 Narutowicza St., 80-233 Gdansk, Poland
| | - Małgorzata Szopińska
- Department of Water and Wastewater Technology, Faculty of Civil and Environmental Engineering, Gdansk University of Technology, 11/12 Narutowicza St., 80-233 Gdansk, Poland
| | - Aneta Luczkiewicz
- Department of Water and Wastewater Technology, Faculty of Civil and Environmental Engineering, Gdansk University of Technology, 11/12 Narutowicza St., 80-233 Gdansk, Poland
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Chen J, Xu Y, Li Y, Liao J, Ling J, Li J, Xie G. Effective removal of nitrate by denitrification re-enforced with a two-stage anoxic/oxic (A/O) process from a digested piggery wastewater with a low C/N ratio. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2019; 240:19-26. [PMID: 30928792 DOI: 10.1016/j.jenvman.2019.03.091] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/02/2019] [Revised: 02/20/2019] [Accepted: 03/19/2019] [Indexed: 06/09/2023]
Abstract
The combined process of a long-term biogas digester and double anoxic/oxic tanks is very commonly used in piggery wastewater treatment in South China, but the effluent does not meet the discharge standard of total nitrogen (TN) and chemical oxygen demand (CODCr) due to a low C/N ratio and insufficient organic carbon in digested piggery wastewater. Thus, a typical two-stage anoxic/oxic (A1/O1/A2/O2) process, which is widely used to treat digested piggery wastewater in the engineering application, was selected for study on a laboratory scale. Finally, the average removal efficiency of ammonia nitrogen in the two-stage AO process was 98.7%; at the same time, the content of nitrate increased to 180-190 mg/L. To further eliminate nitrogen, an anaerobic tank (S1), which was equipped the sludge that was acclimated in our laboratory by a high nitrogen loading slurry, was employed to treat the effluent from the two-stage AO process and contributed more than 70% removal efficiency. Further analysis showed that ammonia-oxidizing bacteria (AOB) and nitrite oxidizing bacteria (NOB) in the O1 and O2 tanks together contributed to the conversion of ammonia nitrogen to nitrate, but the process of heterotrophic denitrification was inhibited in the A1 and A2 tanks because of insufficient carbon sources. In addition, most of the nitrate concentration was reduced under conditions with insufficient carbon sources, while Thauera-dominated the bacterial population in the sludge sample of the S1 tank.
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Affiliation(s)
- Jinliang Chen
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou, 510006, China
| | - Yanbin Xu
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou, 510006, China.
| | - Yuxin Li
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou, 510006, China
| | - Jinsong Liao
- Guangdong Yikangsheng Environmental Science and Technology Limited Company, Yunfu, 527400, China
| | - Jiayin Ling
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou, 510006, China
| | - Jiayi Li
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou, 510006, China
| | - Guangyan Xie
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou, 510006, China
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Liu J, Eng CY, Ho JS, Chong TH, Wang L, Zhang P, Zhou Y. Quorum quenching in anaerobic membrane bioreactor for fouling control. WATER RESEARCH 2019; 156:159-167. [PMID: 30913419 DOI: 10.1016/j.watres.2019.03.029] [Citation(s) in RCA: 54] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2018] [Revised: 03/14/2019] [Accepted: 03/15/2019] [Indexed: 06/09/2023]
Abstract
Quorum quenching (QQ) is an effective method to control membrane biofouling in aerobic membrane bioreactors (AeMBRs). However, it is not clear if QQ is feasible in an anaerobic membrane bioreactor (AnMBR). In this study, Microbacterium. sp that has QQ capability was embedded in alginate beads, known as QQ beads (QQB), and applied in a lab-scale AnMBR to investigate their potential in fouling control. With the addition of QQB, the operating period of AnMBR-QQB reactor was prolonged by about 8-10 times at constant flux operation before reaching the pre-set maximum transmembrane pressure (TMP). The concentration of Acyl-homoserine lactones (AHLs) in the bulk liquid was significantly higher during the 'TMP jump' period compared to QQB and control phases, while AHLs in the membrane foulants were remarkably lower in QQB phase compared to control phase. Furthermore, a much lower level of soluble microbial production (SMP) was observed in QQB phases. Extracellular polymeric substance (EPS), protein in particular, was reduced by 39.73-80.58% in the cake layer of the membrane from QQB phases. Significant changes of organic functional groups were observed in cake layer from QQB membrane as compared with that from control membrane. At the end of operation, bio-polymer (BP), building blocks (BB) and low molecular weight (LMW) organic matters increased in the foulant from control phases but such increase was not observed in QQB phase. After long-term operation, revival of QQB is required due to the declined activity for AHLs degradation.
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Affiliation(s)
- Jianbo Liu
- Advanced Environmental Biotechnology Centre, Nanyang Environment & Water Research Institute, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore; College of Environmental Science and Engineering, Hunan University, Changsha, 410082, China
| | - Chin Yee Eng
- Advanced Environmental Biotechnology Centre, Nanyang Environment & Water Research Institute, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore
| | - Jia Shin Ho
- Singapore Membrane Technology Centre, Nanyang Environment & Water Research Institute, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore; School of Civil and Environmental Engineering, Nanyang Technological University, Singapore, 639798, Singapore
| | - Tzyy Haur Chong
- Singapore Membrane Technology Centre, Nanyang Environment & Water Research Institute, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore; School of Civil and Environmental Engineering, Nanyang Technological University, Singapore, 639798, Singapore
| | - Li Wang
- Advanced Environmental Biotechnology Centre, Nanyang Environment & Water Research Institute, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore
| | - Panyue Zhang
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, China
| | - Yan Zhou
- Advanced Environmental Biotechnology Centre, Nanyang Environment & Water Research Institute, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore; School of Civil and Environmental Engineering, Nanyang Technological University, Singapore, 639798, Singapore.
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30
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Wang WH, Wang Y, Fan P, Chen LF, Chai BH, Zhao JC, Sun LQ. Effect of calcium peroxide on the water quality and bacterium community of sediment in black-odor water. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2019; 248:18-27. [PMID: 30769226 DOI: 10.1016/j.envpol.2018.11.069] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/10/2018] [Revised: 11/05/2018] [Accepted: 11/22/2018] [Indexed: 06/09/2023]
Abstract
This study investigated how efficiently CaO2 could treat black-odor landscape water caused by low dissolved oxygen (DO) in a field experiment of 600 m2. The study demonstrated that CaO2 could significantly elevate the DO concentration in waters and the oxidation-reduction potential (ORP) level in sediments (p = 0.003 and p = 0), which is conducive to improving the anoxic environment of landscape water. The concentrations of total chemical oxygen demand (TCOD) and S2- in overlying and interstitial waters were considerably decreased. The average concentrations of TCOD in the overlying and interstitial waters of the test zone (TZ) were 52.98% and 66.05% of those of the control zone (CZ), and the average concentrations of S2- in the overlying and interstitial waters of TZ were 29.63% and 39.79% of those of CZ. Meanwhile, CaO2 could obviously reduce turbidity but increase the transparency in the overlying water. The mean value of turbidity in the overlying water of TZ was 39.46% of that of CZ, whereas the transparency in the overlying water of TZ was 2.07 times that of CZ. Furthermore, CaO2 changed the microbial community structure in the sediments, where the relative abundance of anaerobic bacteria was decreased but that of the aerobic bacteria was increased with some functional bacteria. In summary, CaO2 could significantly increase the DO and ORP in black-odor landscape water, obviously inhibit the release of pollutants from sediment, and increase the diversity of microbial strains. Consequently, the black-odor phenomenon of landscape water could be alleviated effectively by adding CaO2.
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Affiliation(s)
- Wen-Huai Wang
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, China
| | - Yi Wang
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, China.
| | - Pan Fan
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, China
| | - Lin-Feng Chen
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, China
| | - Bao-Hua Chai
- School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, China
| | - Jing-Chan Zhao
- College of Chemistry & Materials Science, Northwest University, Xi'an, 710069, China
| | - Lu-Qin Sun
- Environmental Science Department, University of San Francisco, California, CA, 94117, USA
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31
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Gui X, Xu W, Cao H, Ning P, Zhang Y, Li Y, Sheng Y. A novel phenol and ammonia recovery process for coal gasification wastewater altering the bacterial community and increasing pollutants removal in anaerobic/anoxic/aerobic system. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 661:203-211. [PMID: 30669053 DOI: 10.1016/j.scitotenv.2019.01.126] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2018] [Revised: 01/11/2019] [Accepted: 01/11/2019] [Indexed: 06/09/2023]
Abstract
Coal gasification wastewater (CGWW) is a typical toxic and refractory industrial wastewater. Here, a novel phenol and ammonia recovery process (IPE) was employed for CGWW pretreatment, and the coupled system assemble by the IPE process with A2/O system (IPE-A2/O) were operated to enhance the treatment performance of CGWW. The results showed that the IPE pre-treated effluent had a higher BOD5/COD ratio and lower refractory compounds compared to a typical process (MIBK). Subsequent A2/O biological treatment indicated that the A2/O-p system (A2/O system followed IPE process) obtained a higher average COD removal of 92% compared to 87.7% of the control (A2/O-m, A2/O system followed MIBK). The GC-MS analysis suggested that the content of alkanes in the IPE-A2/O effluent was lower than that of the MIBK-A2/O. The high-throughput sequencing revealed Levilinea, Alcaligenes, Acinetobacter, Thauera and Thiobacillus were the core genera in A2/O system. The genera Alcaligenes, Acinetobacter, Thauera and Thiobacillus in the degrading consortium were enriched in the A2/O-p system, leading to increased removals of organic pollutants and TN. These results suggested that the IPE process was a feasible pretreatment method, and the coupled IPE-A2/O system was an alternative technique for treating CGWW.
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Affiliation(s)
- Xuefei Gui
- School of Chemical and Environmental Engineering, China University of Mining and Technology (Beijing), Beijing 100083, PR China; CAS Interdisciplinary Innovation Team, Chinese Academy of Sciences, Beijing 100190, PR China
| | - Weichao Xu
- School of Chemical and Environmental Engineering, China University of Mining and Technology (Beijing), Beijing 100083, PR China
| | - Hongbin Cao
- CAS Interdisciplinary Innovation Team, Chinese Academy of Sciences, Beijing 100190, PR China; National Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, PR China
| | - Pengge Ning
- CAS Interdisciplinary Innovation Team, Chinese Academy of Sciences, Beijing 100190, PR China.
| | - Yuxiu Zhang
- School of Chemical and Environmental Engineering, China University of Mining and Technology (Beijing), Beijing 100083, PR China.
| | - Yuping Li
- CAS Interdisciplinary Innovation Team, Chinese Academy of Sciences, Beijing 100190, PR China
| | - Yuxing Sheng
- CAS Interdisciplinary Innovation Team, Chinese Academy of Sciences, Beijing 100190, PR China; National Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, PR China
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32
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Miao L, Yang G, Tao T, Peng Y. Recent advances in nitrogen removal from landfill leachate using biological treatments - A review. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2019; 235:178-185. [PMID: 30682670 DOI: 10.1016/j.jenvman.2019.01.057] [Citation(s) in RCA: 124] [Impact Index Per Article: 24.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2018] [Revised: 01/07/2019] [Accepted: 01/17/2019] [Indexed: 05/21/2023]
Abstract
Landfill leachate, generated from the wastes in a landfill, is a type of wastewater with high concentrations of ammonia and organics, causing a serious environmental pollution. Because of its complex and changing characteristics, it is difficult to remove nitrogen from landfill leachate economically and effectively. Hence, nitrogen removal is a significant research priority of landfill leachate treatment in recent years. Biological processes are known to be effective in nitrogen removal. In this work, the biological nitrogen removal treatments were divided into the following processes: conventional nitrification-denitrification process, nitritation-denitritation process, endogenous denitritation process, and anaerobic ammonium oxidation (Anammox) process. This manuscript summarized the theories and applications of these approaches in detail, and concluded that appropriate processes should be selected in accordance with different characteristics of landfill leachate, in order to effectively remove nitrogen from all stages of landfill leachate and reduce disposal costs. Finally, perspective on the challenges and opportunities of biological nitrogen removal from landfill leachate was also presented.
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Affiliation(s)
- Lei Miao
- School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan, PR China
| | - Gangqing Yang
- School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan, PR China
| | - Tao Tao
- School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan, PR China
| | - Yongzhen Peng
- National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Engineering Research Center of Beijing, Beijing University of Technology, Beijing, PR China.
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Huang ZS, Wei ZS, Xiao XL, Tang MR, Li BL, Zhang X. Simultaneous mercury oxidation and NO reduction in a membrane biofilm reactor. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 658:1465-1474. [PMID: 30678005 DOI: 10.1016/j.scitotenv.2018.12.105] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2018] [Revised: 11/13/2018] [Accepted: 12/08/2018] [Indexed: 06/09/2023]
Abstract
This work demonstrates bacterial oxidation of mercury (Hg0) coupled to nitric oxide (NO) reduction in a denitrifying membrane biofilm reactor (MBfR). In 93 days' operation, Hg0 and NO removal efficiency attained 90.7% and 74.1%, respectively. Thauera, Pseudomonas, Paracoccus and Pannonibacter played dual roles as Hg0 oxidizers and denitrifiers simultaneously. Denitrifying bacteria and the potential mercury resistant bacteria dominated the bacterial community. Denitrification-related genes (norB, norC, norD, norE, norQ and norV) and enzymatic Hg0 oxidation-related genes (katG, katE) were responsible for bacterial oxidation of Hg0 and NO reduction, as shown by metagenomic sequencing. XPS, HPLC-ICP-MS and SEM-EDS indicated the formation of a stable mercuric species (Hg2+) reasulting from Hg0 oxidation in the biofilm. Bacterial oxidation of Hg0 was coupled to NO reduction in which Hg0 served as the initial electron donor while NO served as the terminal electron acceptor and thereby redox between Hg0 and NO was formed. MBfR was capable of both Hg0 bio-oxidation and denitrifying NO reduction. This research opens up new possibilities for application of MBfR to simultaneous flue gas demercuration and denitration.
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Affiliation(s)
- Z S Huang
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Guangzhou 510275, China
| | - Z S Wei
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Guangzhou 510275, China.
| | - X L Xiao
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Guangzhou 510275, China
| | - M R Tang
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Guangzhou 510275, China
| | - B L Li
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Guangzhou 510275, China
| | - X Zhang
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Guangzhou 510275, China
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Zhang C, Guo J, Lian J, Song Y, Lu C, Li H. Bio-mixotrophic perchlorate reduction to control sulfate production in a step-feed sulfur-based reactor: A study of kinetics, ORP and bacterial community structure. BIORESOURCE TECHNOLOGY 2018; 269:40-49. [PMID: 30149253 DOI: 10.1016/j.biortech.2018.08.084] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2018] [Revised: 08/14/2018] [Accepted: 08/19/2018] [Indexed: 05/13/2023]
Abstract
Excess sulfate production and low concentration of perchlorate removal are the main problems for sulfur-based perchlorate reduction reactor. In this study, the problems were firstly solved by step-feeding under mixotrophic conditions. The performances of step-feed sulfur-based reactor (SFSBR) and up-flow sulfur-based reactor (UFSBR) are compared. At perchlorate of 194 mg/L, acetate of 28.8 mg/L and hydraulic retention time of 0.9 h, the Half-order reaction rate constant and the sulfate production of SFSBR were 29.7 mg1/2/L1/2·h and 171 mg/L, respectively, which were superior to those of UFSBR. The oxidation-reduction potential values of SFSBR were lower than that of UFSBR. Meanwhile, the biodiversity along the height of the reactor was decreased by step-feeding. Principal component analysis showed significant interrelations existed among the bacterial community composition and the operational/environmental conditions in each treatment zone. Consequently, the SFSBR provides an effectively alteration for the removal of high perchlorate concentration and control sulfate.
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Affiliation(s)
- Chao Zhang
- Tianjin Key Laboratory of Aquatic Science and Technology, School of Environmental and Municipal Engineering, Tianjin Chengjian University, Jinjing Road 26#, Tianjin 300384, PR China; School of Environment Science and Engineering, Tianjin University, Tianjin 300350, PR China
| | - Jianbo Guo
- Tianjin Key Laboratory of Aquatic Science and Technology, School of Environmental and Municipal Engineering, Tianjin Chengjian University, Jinjing Road 26#, Tianjin 300384, PR China.
| | - Jing Lian
- School of Environmental Science and Engineering & Pollution Prevention Biotechnology Laboratory of Hebei Province, Hebei University of Science and Technology, Yuhua East Road 70#, Shijiazhuang 050018, PR China
| | - Yuanyuan Song
- Tianjin Key Laboratory of Aquatic Science and Technology, School of Environmental and Municipal Engineering, Tianjin Chengjian University, Jinjing Road 26#, Tianjin 300384, PR China
| | - Caicai Lu
- Tianjin Key Laboratory of Aquatic Science and Technology, School of Environmental and Municipal Engineering, Tianjin Chengjian University, Jinjing Road 26#, Tianjin 300384, PR China
| | - Haibo Li
- Tianjin Key Laboratory of Aquatic Science and Technology, School of Environmental and Municipal Engineering, Tianjin Chengjian University, Jinjing Road 26#, Tianjin 300384, PR China
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Nuansawan N, Chiemchaisri C, Chiemchaisri W, Shoda M. Treatment of concentrated leachate with low greenhouse gas emission in two-stage membrane bioreactor bio-augmented with Alcaligenes faecalis no. 4. JOURNAL OF THE AIR & WASTE MANAGEMENT ASSOCIATION (1995) 2018; 68:1378-1390. [PMID: 30199324 DOI: 10.1080/10962247.2018.1516701] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2018] [Revised: 08/17/2018] [Accepted: 08/22/2018] [Indexed: 06/08/2023]
Abstract
Methane (CH4) and nitrous oxide (N2O) emissions from two-stage membrane bioreactor (MBR) bio-augmented by Alcaligenes faecalis no. 4 during municipal solid waste leachate treatment were investigated. The system was operated at hydraulic retention time (HRT) of 2.5 and 1 days in each reactor under the presence and absence of sludge recirculation. Alcaligenes faecalis no. 4 bio-augmentation helped improving organic carbon and nitrogen removals while reducing CH4 and N2O emissions. CH4 and N2O emissions were decreased by 46% and 85% when A. faecalis no. 4 was introduced at HRT of 2.5 days. Under the presence of A. faecalis no. 4, the operation of two-stage MBR with sludge recirculation could reduce CH4 and N2O emissions by 51% and 54% as compared to its operation without sludge recirculation. An operation under short HRT of 1 day also yielded high organic carbon and nitrogen removals of more than 85% while emitting lower CH4 and N2O emission of 6.7% C and 0.04% N when operated with sludge recirculation. Implications: A two-stage membrane bioreactor was effectively applied to the treatment of concentrated leachate (BOD~20,000 mg/L) at a short hydraulic retention time of 2.5 days and 1 day. About 80% of CH4 and N2O was emitted from the anaerobic and aerobic reactors, respectively. Introduction of Alcaligenes faecalis no. 4 reduced CH4 and N2O emissions in both reactors as it became the predominant microorganism under an elevated pH condition. Lower CH4 and N2O emissions were achieved under a sludge recirculation operation, as Alcaligenes faecalis no. 4 could suppress methanogenic activities in the anaerobic reactor and converted a majority of nitrogen into its cell mass, thus reducing N2O production through a biological nitrification-denitrification pathway.
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Affiliation(s)
- Nararatchporn Nuansawan
- a Department of Environmental Engineering, Faculty of Engineering , Kasetsart University , Bangkok , Thailand
| | - Chart Chiemchaisri
- a Department of Environmental Engineering, Faculty of Engineering , Kasetsart University , Bangkok , Thailand
| | - Wilai Chiemchaisri
- a Department of Environmental Engineering, Faculty of Engineering , Kasetsart University , Bangkok , Thailand
| | - Makoto Shoda
- b Chemical Resources Laboratory , Tokyo Institute of Technology , Yokohama , Japan
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Wang K, Li L, Tan F, Wu D. Treatment of Landfill Leachate Using Activated Sludge Technology: A Review. ARCHAEA (VANCOUVER, B.C.) 2018; 2018:1039453. [PMID: 30254508 PMCID: PMC6142762 DOI: 10.1155/2018/1039453] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 05/04/2018] [Revised: 07/21/2018] [Accepted: 08/13/2018] [Indexed: 11/21/2022]
Abstract
Landfill leachate contains a large amount of organic matter and ammoniacal nitrogen. As such, it has become a complex and difficult issue within the water treatment industry. The activated sludge process has been found to be a good solution with low processing costs and is now therefore the core process for leachate treatment, especially for nitrogen removal. This paper describes the characteristics and treatment of leachate. Treatment of leachate using the activated sludge process includes the removal of organic matter, ammoniacal nitrogen, and total nitrogen (TN). The core method for the removal of organic matter involves anaerobic treatment supplemented with an aerobic process. Ammoniacal nitrogen is commonly removed using a conventional aerobic treatment, and advanced TN removal is achieved using endogenous denitrification or an anaerobic ammonium oxidation (ANAMMOX) process. Since biological processes are the most economical method for TN removal, a key issue is how to tap the full potential of the activated sludge process and improve TN removal from leachate. This complex issue has been identified as the focus of current scholars, as well as an important future direction for leachate research and development.
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Affiliation(s)
- Kai Wang
- School of Municipal and Environmental Engineering, Shandong Jianzhu University, Jinan 250101, China
| | - Lusheng Li
- Qingdao Xin Bei De Environmental Technology Co. Ltd., Qingdao 266000, China
| | - Fengxun Tan
- School of Municipal and Environmental Engineering, Shandong Jianzhu University, Jinan 250101, China
| | - Daoji Wu
- School of Municipal and Environmental Engineering, Shandong Jianzhu University, Jinan 250101, China
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Xu W, Zhang Y, Cao H, Sheng Y, Li H, Li Y, Zhao H, Gui X. Metagenomic insights into the microbiota profiles and bioaugmentation mechanism of organics removal in coal gasification wastewater in an anaerobic/anoxic/oxic system by methanol. BIORESOURCE TECHNOLOGY 2018; 264:106-115. [PMID: 29793117 DOI: 10.1016/j.biortech.2018.05.064] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2018] [Revised: 05/15/2018] [Accepted: 05/17/2018] [Indexed: 06/08/2023]
Abstract
Coal gasification wastewater is a typical high phenol-containing, toxic and refractory industrial wastewater. Here, lab-scale anaerobic-anoxic-oxic system was employed to treat real coal gasification wastewater, and methanol was added to oxic tank as the co-substrate to enhance the removal of refractory organic pollutants. The results showed that the average COD removal in oxic effluent increased from 24.9% to 36.0% by adding methanol, the total phenols concentration decreased from 54.4 to 44.9 mg/L. GC-MS analysis revealed that contents of phenolic components and polycyclic aromatic hydrocarbons (PAHs) were decreased compared to the control and their degradation intermediates were observed. Microbial community revealed that methanol increased the abundance of phenolics and PAHs degraders such as Comamonas, Burkholderia and Sphingopyxis. Moreover, functional analysis revealed the relative abundance of functional genes associated with toluene, benzoate and PAHs degradation pathways was higher than that of control based on KEGG database.
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Affiliation(s)
- Weichao Xu
- School of Chemical and Environmental Engineering, China University of Mining and Technology (Beijing), Beijing 100083, PR China; Beijing Engineering Research Centre of Process Pollution Control, Division of Environmental Engineering and Technology, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, PR China
| | - Yuxiu Zhang
- School of Chemical and Environmental Engineering, China University of Mining and Technology (Beijing), Beijing 100083, PR China.
| | - Hongbin Cao
- Beijing Engineering Research Centre of Process Pollution Control, Division of Environmental Engineering and Technology, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, PR China; National Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, PR China
| | - Yuxing Sheng
- Beijing Engineering Research Centre of Process Pollution Control, Division of Environmental Engineering and Technology, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, PR China; National Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, PR China
| | - Haibo Li
- Beijing Engineering Research Centre of Process Pollution Control, Division of Environmental Engineering and Technology, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, PR China
| | - Yuping Li
- Beijing Engineering Research Centre of Process Pollution Control, Division of Environmental Engineering and Technology, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, PR China
| | - He Zhao
- Beijing Engineering Research Centre of Process Pollution Control, Division of Environmental Engineering and Technology, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, PR China
| | - Xuefei Gui
- School of Chemical and Environmental Engineering, China University of Mining and Technology (Beijing), Beijing 100083, PR China; Beijing Engineering Research Centre of Process Pollution Control, Division of Environmental Engineering and Technology, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, PR China
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Fudala-Ksiazek S, Pierpaoli M, Luczkiewicz A. Efficiency of landfill leachate treatment in a MBR/UF system combined with NF, with a special focus on phthalates and bisphenol A removal. WASTE MANAGEMENT (NEW YORK, N.Y.) 2018; 78:94-103. [PMID: 32559990 DOI: 10.1016/j.wasman.2018.05.012] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2017] [Revised: 04/28/2018] [Accepted: 05/05/2018] [Indexed: 06/11/2023]
Abstract
In this study, a pilot-scale membrane bioreactor (MBR) was operated at a municipal solid waste plant (MSWP) to treat a mixture of landfill leachates (LLs) obtained from modern (MP-LLs) and previous (PP-LLs) waste cells. The MBR unit combined anoxic and aerobic zones with external ultra- and nanofiltration (MBR/UF and MBR/UF/NF, respectively). In addition to the removal of macropollutants, special attention was given to phthalates (PAEs) and bisphenol A (BPA). According to the obtained results, the MBR/UF system with acclimated biomass was effective for treating LLs, and the obtained effluent was generally similar in quality to raw municipal wastewater. The MBR biomass showed high potential for BPA and PAEs biodegradation/biotransformation as confirmed by a metagenomic approach. Only a high chloride concentration (1960 mg Cl-/L), which was twice the value acceptable by Polish regulations for industrial wastewater entering the municipal wastewater system, justifies the additional usage of the NF unit. Notably, a decreasing amount of biodegradable organic matter in MBR influent is expected with time because of changes in the biochemistry of modern waste cells; therefore, an external carbon source would probably be needed to support denitrification. However, the cooccurrence of an aerobic and anaerobic ammonia-oxidizing community with denitrifying bacteria provides the opportunity for advanced removal of nitrogen and organic carbon.
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Affiliation(s)
- Sylwia Fudala-Ksiazek
- Faculty of Civil and Environmental Engineering, Gdansk University of Technology, Narutowicza 11/12, 80-233 Gdansk, Poland.
| | - Mattia Pierpaoli
- Department of Materials, Environmental Sciences and Urban Planning - Università Politecnica delle Marche, 60131 Ancona, Italy.
| | - Aneta Luczkiewicz
- Faculty of Civil and Environmental Engineering, Gdansk University of Technology, Narutowicza 11/12, 80-233 Gdansk, Poland.
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Liu J, Tian Z, Zhang P, Qiu G, Wu Y, Zhang H, Xu R, Fang W, Ye J, Song Y, Zeng G. Influence of reflux ratio on two-stage anoxic/oxic with MBR for leachate treatment: Performance and microbial community structure. BIORESOURCE TECHNOLOGY 2018; 256:69-76. [PMID: 29428616 DOI: 10.1016/j.biortech.2018.01.146] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2017] [Revised: 01/27/2018] [Accepted: 01/31/2018] [Indexed: 06/08/2023]
Abstract
A lab-scale two-stage Anoxic/Oxic with MBR (AO/AO-MBR) system was operated for 81 days for leachate treatment with different reflux ratio (R). The best system performances were observed with a R value of 150%, and the average removal efficiencies of chemical oxygen demand, ammonia and total nitrogen were 85.6%, 99.1%, and 77.6%, respectively. The microbial community were monitored and evaluated using high-throughput sequencing. Proteobacteria were dominant in all process. Phylogenetic trees were described at species level, genus Thiopseudomonas, Amaricoccus, Nitrosomonas and Nitrobacter played significant roles in nitrogen removal. Co-occurrence analyzing top 20 genera showed that Nitrosomonas-Nitrobacter presented perfect positive relationship, as well as Paracoccus-Brevundimonas and Pusillimonas-Halobacteriovorax.
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Affiliation(s)
- Jianbo Liu
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, China
| | - Zhiyong Tian
- Department of Urban Water Environmental Research, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
| | - Panyue Zhang
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, China; School of Environmental and Chemical Engineering, Chongqing Three Gorges University, Chongqing 404632, China.
| | - Guanglei Qiu
- Department of Chemical and Biomolecular Engineering, National University of Singapore, Singapore 117585, Singapore
| | - Yan Wu
- School of Environmental and Chemical Engineering, Chongqing Three Gorges University, Chongqing 404632, China
| | - Haibo Zhang
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, China
| | - Rui Xu
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, China
| | - Wei Fang
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, China
| | - Jie Ye
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, China
| | - Yonghui Song
- Department of Urban Water Environmental Research, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
| | - Guangming Zeng
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, China
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40
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Liu J, Zhang P, Li H, Tian Y, Wang S, Song Y, Zeng G, Sun C, Tian Z. Denitrification of landfill leachate under different hydraulic retention time in a two-stage anoxic/oxic combined membrane bioreactor process: Performances and bacterial community. BIORESOURCE TECHNOLOGY 2018; 250:110-116. [PMID: 29161569 DOI: 10.1016/j.biortech.2017.11.026] [Citation(s) in RCA: 60] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2017] [Revised: 11/07/2017] [Accepted: 11/09/2017] [Indexed: 06/07/2023]
Abstract
Two-stage anoxic/oxic combined membrane bioreactor (A/O-A/O-MBR) process was used to treat leachate generated from Shenyang Laohuchong landfill, and the effect of hydraulic retention time (HRT) was studied. A long HRT of 9 d and a short HRT of 5 d showed negative effect on the stability of process, resulting in a higher organic concentration of effluent than that with a HRT of 7 d, while the highest removal of chemical oxygen demand (COD), ammonia (NH4+-N) and total nitrogen (TN) were achieved with a HRT of 7 d, which was 82.4%, 99.1% and 75.3% respectively. The analysis of microbial communities by high-throughput sequencing showed that phyla Proteobacteria and Bacteroidetes were the dominant bacteria, which accounted for 36.63-42.39%, 29.21-38.66%, respectively. For genus classification, the most representative of Ferruginibacter, unclassified-Saprospiraceae and Nitrosomonas accounted for 20.76-35.11% totally. The other communities, including Nitrobacter, Planctomyces, Rhodobacteraceae and Nitrospirae, were also developed for organic degradation and denitrification.
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Affiliation(s)
- Jianbo Liu
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, China
| | - Panyue Zhang
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, China
| | - Haibo Li
- School of Environmental and Municipal Engineering, Tianjin Chengjian University, Tianjin 300384, China
| | - Yuan Tian
- Department of Urban Water Environmental Research, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
| | - Siyu Wang
- Department of Urban Water Environmental Research, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
| | - Yonghui Song
- Department of Urban Water Environmental Research, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
| | - Guangming Zeng
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, China
| | - Chen Sun
- Department of Urban Water Environmental Research, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
| | - Zhiyong Tian
- Department of Urban Water Environmental Research, Chinese Research Academy of Environmental Sciences, Beijing 100012, China.
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