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Niu C, Zhang Z, Cai T, Pan Y, Lu X, Zhen G. Sludge bound-EPS solubilization enhance CH 4 bioconversion and membrane fouling mitigation in electrochemical anaerobic membrane bioreactor: Insights from continuous operation and interpretable machine learning algorithms. WATER RESEARCH 2024; 264:122243. [PMID: 39142046 DOI: 10.1016/j.watres.2024.122243] [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: 05/31/2024] [Revised: 08/04/2024] [Accepted: 08/08/2024] [Indexed: 08/16/2024]
Abstract
Bound extracellular polymeric substances (EPS) are complex, high-molecular-weight polymer mixtures that play a critical role in pore clogging, foulants adhesion, and fouling layer formation during membrane filtration, owing to their adhesive properties and gelation tendencies. In this study, a novel electrochemical anaerobic membrane bioreactor (EC-AnMBR) was constructed to investigate the effect of sludge bound-EPS solubilization on methane bioconversion and membrane fouling mitigation. During the 150-days' operation, the EC-AnMBR demonstrated remarkable performance, characterized by an exceptionally low fouling rate (transmembrane pressure (TMP) < 4.0 kPa) and high-quality effluent (COD removal > 98.2 %, protein removal > 97.7 %, and polysaccharide removal > 98.5 %). The highest methane productivity was up to 38.0 ± 3.1 mL/Lreactor/d at the applied voltage of 0.8 V with bound-EPS solubilization, 107.6 % higher than that of the control stage (18.3 ± 2.4 mL/Lreactor/d). Morphological and multiplex fluorescence labeling analyses revealed higher fluorescence intensities of proteins, polysaccharides, total cells and lipids on the surface of the fouling layer. In contrast, the interior exhibited increased compression density and reduced activity, likely attributable to compression effect. Under the synergistic influence of the electric field and bound-EPS solubilization, biomass characteristics exhibited a reduced propensity for membrane fouling. Furthermore, the bio-electrochemical regulation enhanced the electroactivity of microbial aggregates and enriched functional microorganisms, thereby promoting biofilm growth and direct interspecies electron transfer. Additionally, the potential hydrogenotrophic and methylotrophic methanogenesis pathways were enhanced at the cathode and anode surfaces, thereby increasing CH₄ productivity. The random forest-based machine learning model analyzed the nonlinear contributions of EPS characteristics on methane productivity and TMP values, achieving R² values of 0.879 and 0.848, respectively. Shapley additive explanations (SHAP) analysis indicated that S-EPSPS and S-EPSPN were the most critical factors affecting CH₄ productivity and membrane fouling, respectively. Partial dependence plot analysis further verified the marginal and interaction effects of different EPS layers on these outcomes. By combining continuous operation with interpretable machine learning algorithms, this study unveils the intricate impacts of EPS characteristics on methane productivity and membrane fouling behaviors, and provides new insights into sludge bound-EPS solubilization in EC-AnMBR.
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Affiliation(s)
- Chengxin Niu
- Shanghai Key Lab for Urban Ecological Processes and Eco-Restoration, School of Ecological and Environmental Sciences, East China Normal University, 500 Dongchuan Rd, Shanghai 200241, PR China
| | - Zhongyi Zhang
- Shanghai Key Lab for Urban Ecological Processes and Eco-Restoration, School of Ecological and Environmental Sciences, East China Normal University, 500 Dongchuan Rd, Shanghai 200241, PR China
| | - Teng Cai
- Shanghai Key Lab for Urban Ecological Processes and Eco-Restoration, School of Ecological and Environmental Sciences, East China Normal University, 500 Dongchuan Rd, Shanghai 200241, PR China
| | - Yang Pan
- Shanghai Key Lab for Urban Ecological Processes and Eco-Restoration, School of Ecological and Environmental Sciences, East China Normal University, 500 Dongchuan Rd, Shanghai 200241, PR China
| | - Xueqin Lu
- Shanghai Key Lab for Urban Ecological Processes and Eco-Restoration, School of Ecological and Environmental Sciences, East China Normal University, 500 Dongchuan Rd, Shanghai 200241, PR China; Shanghai Engineering Research Center of Biotransformation of Organic Solid Waste, Shanghai 200241, PR China; Shanghai Institute of Pollution Control and Ecological Security, 1515 North Zhongshan Rd. (No. 2), Shanghai 200092, PR China
| | - Guangyin Zhen
- Shanghai Key Lab for Urban Ecological Processes and Eco-Restoration, School of Ecological and Environmental Sciences, East China Normal University, 500 Dongchuan Rd, Shanghai 200241, PR China; Institute of Eco-Chongming (IEC), 3663N. Zhongshan Rd., Shanghai 200062, PR China; Shanghai Engineering Research Center of Biotransformation of Organic Solid Waste, Shanghai 200241, PR China; Technology Innovation Center for Land Spatial Eco-restoration in Metropolitan Area, Ministry of Natural Resources, 3663N. Zhongshan Road, Shanghai 200062, China.
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Phuc-Hanh Tran D, You SJ, Bui XT, Wang YF, Ramos A. Anaerobic membrane bioreactors for municipal wastewater: Progress in resource and energy recovery improvement approaches. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 366:121855. [PMID: 39025005 DOI: 10.1016/j.jenvman.2024.121855] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2024] [Revised: 06/11/2024] [Accepted: 07/12/2024] [Indexed: 07/20/2024]
Abstract
Anaerobic membrane bioreactor (AnMBR) offer promise in municipal wastewater treatment, with potential benefits including high-quality effluent, energy recovery, sludge reduction, and mitigating greenhouse gas emissions. However, AnMBR face hurdles like membrane fouling, low energy recovery, etc. In light of net-zero carbon target and circular economy strategy, this work sought to evaluate novel AnMBR configurations, focusing on performance, fouling mitigation, net-energy generation, and nutrients-enhancing integrated configurations, such as forward osmosis (FO), membrane distillation (MD), bioelectrochemical systems (BES), membrane photobioreactor (MPBR), and partial nitrification-anammox (PN/A). In addition, we highlight the essential role of AnMBR in advancing the circular economy and propose ideas for the water-energy-climate nexus. While AnMBR has made significant progress, challenges, such as fouling and cost-effectiveness persist. Overall, the use of novel configurations and energy recovery strategies can further improve the sustainability and efficiency of AnMBR systems, making them a promising technology for future sustainable municipal wastewater treatment.
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Affiliation(s)
- Duyen Phuc-Hanh Tran
- Department of Civil Engineering, Chung Yuan Christian University, Taoyuan, 32023, Taiwan; Center for Environmental Risk Management, Chung Yuan Christian University, Taoyuan, 32023, Taiwan
| | - Sheng-Jie You
- Department of Environmental Engineering, Chung Yuan Christian University, Taoyuan, 32023, Taiwan; Center for Environmental Risk Management, Chung Yuan Christian University, Taoyuan, 32023, Taiwan.
| | - Xuan-Thanh Bui
- Key Laboratory of Advanced Waste Treatment Technology & Faculty of Environment and Natural Resources, Ho Chi Minh City University of Technology (HCMUT), 268 Ly Thuong Kiet Street, District 10, Ho Chi Minh City, Viet Nam; Vietnam National University Ho Chi Minh City (VNU-HCM), Linh Trung Ward, Ho Chi Minh City, 700000, Viet Nam
| | - Ya-Fen Wang
- Department of Environmental Engineering, Chung Yuan Christian University, Taoyuan, 32023, Taiwan; Sustainable Environmental Education Center, Chung Yuan Christian University, Taoyuan, 32023, Taiwan
| | - Aubrey Ramos
- Department of Environmental Engineering, Chung Yuan Christian University, Taoyuan, 32023, Taiwan; Center for Environmental Risk Management, Chung Yuan Christian University, Taoyuan, 32023, Taiwan
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3
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Ferrera E, Ruigómez I, Vela-Bastos C, Ferreira A, Gouveia L, Vera L. Resources recovery from domestic wastewater by a combined process: anaerobic digestion and membrane photobioreactor. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:49560-49573. [PMID: 39080174 PMCID: PMC11324692 DOI: 10.1007/s11356-024-34468-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2023] [Accepted: 07/20/2024] [Indexed: 08/06/2024]
Abstract
Anaerobic and membrane technologies are a promising combination to decrease the energy consumption associated with wastewater treatment, allowing the recovery of resources: organic matter as biomethane, nutrient assimilation by microalgae and reclaimed water. In this study, domestic wastewater was treated using a combination of an upflow anaerobic sludge blanket sludge reactor (UASB) and a membrane photobioreactor (MPBR). The outdoor facilities were operated continuously for three months under unfavourable environmental conditions such as lack of temperature control, winter season with lower solar irradiation and lower daylight hours which was a challenge for the present work, not previously described. The energetic valorisation of the organic matter present in the wastewater by biomethane produced in the UASB would contribute to reducing overall facilities' energy requirements. The ultrafiltration (UF) membrane facilitated the harvesting of biomass, operating at 10 L·h-1·m-2 during the experimental period. Although the main contribution to fouling was irreversible, chemical cleanings were not necessary due to effective fouling control, which prevented the final TMP from exceeding 25 kPa. In addition, microalgae-bacterial consortium developed without prior inoculation were harvested from the MPBR using membrane assistance. The obtained biomass was also successfully tested as a biostimulant for corn germination/growth, as well as a biopesticide against Rhizoctonia solani and Fusarium oxysporum.
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Affiliation(s)
- Elvira Ferrera
- Departamento de Ingeniería Química y Tecnología Farmacéutica, Facultad de Ciencias, Universidad de La Laguna, Avenida Astrofísico Francisco Sánchez S/N, 38206, La Laguna, Spain
| | - Ignacio Ruigómez
- Departamento de Ingeniería Química y Tecnología Farmacéutica, Facultad de Ciencias, Universidad de La Laguna, Avenida Astrofísico Francisco Sánchez S/N, 38206, La Laguna, Spain
| | - Carolina Vela-Bastos
- LNEG - UBB - National Laboratory of Energy and Geology I.P., Bioenergy and Biorefineries Unit, Estrada Do Paço Do Lumiar 22, 1649-038, Lisbon, Portugal
- GreenCoLab - Green Ocean Technologies and Products Collaborative Laboratory, CCMAR, Algarve University, Faro, Portugal
| | - Alice Ferreira
- LNEG - UBB - National Laboratory of Energy and Geology I.P., Bioenergy and Biorefineries Unit, Estrada Do Paço Do Lumiar 22, 1649-038, Lisbon, Portugal
| | - Luisa Gouveia
- LNEG - UBB - National Laboratory of Energy and Geology I.P., Bioenergy and Biorefineries Unit, Estrada Do Paço Do Lumiar 22, 1649-038, Lisbon, Portugal
- GreenCoLab - Green Ocean Technologies and Products Collaborative Laboratory, CCMAR, Algarve University, Faro, Portugal
| | - Luisa Vera
- Departamento de Ingeniería Química y Tecnología Farmacéutica, Facultad de Ciencias, Universidad de La Laguna, Avenida Astrofísico Francisco Sánchez S/N, 38206, La Laguna, Spain.
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4
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Jiao C, Chen H, Liu Y, Zhao H, Li Q, Wang G, Chen R, Li YY. Synergistic effects of biochar addition and filtration mode optimization on mitigating membrane fouling in high-solid anaerobic membrane bioreactors. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 926:171648. [PMID: 38521277 DOI: 10.1016/j.scitotenv.2024.171648] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Revised: 03/08/2024] [Accepted: 03/09/2024] [Indexed: 03/25/2024]
Abstract
In this study, a high-solid anaerobic membrane bioreactor was established for treating food waste, and membrane fouling rates were regulated through multivariate modulation. The anaerobic membrane bioreactor operated stably at a high organic loading rate of 28.75 gCOD/L/d achieved a methane production rate of 8.03 ± 0.61 L/L/d. Experimental findings revealed that the most effective control of membrane fouling was achieved at a filtration- relaxation ratio (F/R) of 10/90 s. This indicates that a higher relaxation frequency provided improved the mitigation of membrane fouling. Compared with single F/R modulation, the combined modulation of biochar and F/R provided enhanced control over membrane fouling. Moreover, the addition of biochar altered the sludge properties of the reactor, thereby preventing the formation of a dense cake layer. Additionally, biochar enhanced the sheer force of the fluid on the membrane surface and facilitated the separation of pollutants during the relaxation stage, thereby contributing to improved control of membrane fouling.
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Affiliation(s)
- Chengfan Jiao
- Key Lab of Environmental Engineering, Shaanxi Province, Xi'an University of Architecture and Technology, No.13 Yanta Road, Xi'an 710055, PR China
| | - Hao Chen
- Key Lab of Environmental Engineering, Shaanxi Province, Xi'an University of Architecture and Technology, No.13 Yanta Road, Xi'an 710055, PR China
| | - Yaqian Liu
- Key Lab of Environmental Engineering, Shaanxi Province, Xi'an University of Architecture and Technology, No.13 Yanta Road, Xi'an 710055, PR China; Department of Civil and Environmental Engineering, Graduate School of Engineering, Tohoku University, 6-6-06 Aza-Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 9808579, Japan
| | - Hexiang Zhao
- HuaLu Engineering & Technology Co., Ltd, PR China
| | - Qian Li
- Key Lab of Environmental Engineering, Shaanxi Province, Xi'an University of Architecture and Technology, No.13 Yanta Road, Xi'an 710055, PR China; Department of Civil and Environmental Engineering, Graduate School of Engineering, Tohoku University, 6-6-06 Aza-Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 9808579, Japan; International S & T Cooperation Center for Urban Alternative Water Resources Development, Key Laboratory of Northwest Water Resource, Environment and Ecology, MOE, Xi'an University of Architecture and Technology, No.13 Yanta Road, Xi'an 710055, PR China.
| | - Gaojun Wang
- Key Lab of Environmental Engineering, Shaanxi Province, Xi'an University of Architecture and Technology, No.13 Yanta Road, Xi'an 710055, PR China; International S & T Cooperation Center for Urban Alternative Water Resources Development, Key Laboratory of Northwest Water Resource, Environment and Ecology, MOE, Xi'an University of Architecture and Technology, No.13 Yanta Road, Xi'an 710055, PR China
| | - Rong Chen
- Key Lab of Environmental Engineering, Shaanxi Province, Xi'an University of Architecture and Technology, No.13 Yanta Road, Xi'an 710055, PR China; International S & T Cooperation Center for Urban Alternative Water Resources Development, Key Laboratory of Northwest Water Resource, Environment and Ecology, MOE, Xi'an University of Architecture and Technology, No.13 Yanta Road, Xi'an 710055, PR China
| | - Yu-You Li
- Department of Civil and Environmental Engineering, Graduate School of Engineering, Tohoku University, 6-6-06 Aza-Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 9808579, Japan
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5
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Moideen SNF, Krishnan S, Li YY, Hassim MH, Kamyab H, Nasrullah M, Din MFM, Halim KA, Chaiprapat S. Performance evaluation and energy potential analysis of anaerobic membrane bioreactor (AnMBR) in the treatment of simulated milk wastewater. CHEMOSPHERE 2023; 317:137923. [PMID: 36682635 DOI: 10.1016/j.chemosphere.2023.137923] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Revised: 12/30/2022] [Accepted: 01/18/2023] [Indexed: 06/17/2023]
Abstract
An anaerobic membrane bioreactor (AnMBR) was employed as primary treatment unit for anaerobic treatment of simulated wastewater to produce high effluent quality. A lab scale hollow fiber membrane was used to scrutinize the performance of AnMBR as a potential treatment system for simulated milk wastewater and analyze its energy recovery potential. The 15 L bioreactor was operated continuously at mesophilic conditions (35 °C) with a pH constant of 7.0. The membrane flux was in the range of 9.6-12.6 L/m2. h. The different organic loading rates (OLRs) of 1.61, 3.28, 5.01, and 8.38 g-COD/L/d, of simulated milk wastewater, were fed to the reactor and the biogas production rate was analyzed, respectively. The results revealed that the COD removal efficiencies of 99.54 ± 0.001% were achieved at the OLR of 5.01 gCOD/L/d. The highest methane yield was found to be at OLR of 1.61 gCOD/L/d at HRT of 30 d with the value of 0.33 ± 0.01 L-CH4/gCOD. Moreover, based on the analysis of energy balance in the AnMBR system, it was found that energy is positive at all the given HRTs. The net energy production (NEP) ranged from 2.594 to 3.268 kJ/gCOD, with a maximum NEP value of 3.268 kJ/gCOD at HRT 10 d HRT. Bioenergy recovery with the maximum energy ratio, of 4.237, was achieved with an HRT of 5 d. The study suggests a sizable energy saving with the anaerobic membrane process.
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Affiliation(s)
- Siti Nur Fatihah Moideen
- Faculty of Engineering, School of Chemical and Energy Engineering, Universiti Teknologi Malaysia, 81310, Skudai, Johor, Malaysia; Department of Frontier Science for Advanced Environment, Graduate School of Environmental Sciences, Tohoku University, 6-6-2 Aoba, Aramaki-Aza, Sendai, Miyagi, 980-8579, Japan
| | - Santhana Krishnan
- Department of Civil and Environmental Engineering, PSU Energy Systems Research Institute (PERIN), Faculty of Engineering, Prince of Songkla University, Hat Yai, Songkhla, 90110, Thailand.
| | - Yu-You Li
- Department of Frontier Science for Advanced Environment, Graduate School of Environmental Sciences, Tohoku University, 6-6-2 Aoba, Aramaki-Aza, Sendai, Miyagi, 980-8579, Japan; Department of Civil and Environmental Engineering, Graduate School of Engineering, Tohoku University, 6-6-06 Aramaki-Aza, Sendai, Miyagi, 980-8579, Japan
| | - Mimi Haryani Hassim
- Faculty of Engineering, School of Chemical and Energy Engineering, Universiti Teknologi Malaysia, 81310, Skudai, Johor, Malaysia
| | - Hesam Kamyab
- Malaysia-Japan International Institute of Technology, Universiti Teknologi Malaysia, 81310, Skudai, Johor, Malaysia; Department of Biomaterials, Saveetha Dental College and Hospital, Saveetha Institute of Medical and Technical Sciences, Chennai, 600 077, India
| | - Mohd Nasrullah
- Faculty of Civil Engineering Technology, University of Malaysia Pahang, Malaysia
| | - Mohd Fadhil Md Din
- Centre for Environmental Sustainability and Water Security (IPASA), Faculty of Engineering, School of Civil Engineering, Universiti Teknologi Malaysia, 81310, Skudai, Johor, Malaysia
| | - Khairunnisa Abdul Halim
- Department of Water and Environmental Engineering, School of Civil Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81310, Skudai, Johor, Malaysia
| | - Sumate Chaiprapat
- Department of Civil and Environmental Engineering, PSU Energy Systems Research Institute (PERIN), Faculty of Engineering, Prince of Songkla University, Hat Yai, Songkhla, 90110, Thailand
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6
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Dynamic scouring of multifunctional granular material enhances filtration performance in membrane bioreactor: Mechanism and modeling. J Memb Sci 2022. [DOI: 10.1016/j.memsci.2022.120979] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Wu Z, Qiao W, Liu Y, Yao J, Gu C, Zheng X, Dong R. Contribution of chemical precipitation to the membrane fouling in a high-solids type anaerobic membrane bioreactor treating OFMSW leachate. J Memb Sci 2022. [DOI: 10.1016/j.memsci.2022.120298] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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8
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Chaipetch W, Jaiyu A, Jutaporn P, Heran M, Khongnakorn W. Fouling Behavior in a High-Rate Anaerobic Submerged Membrane Bioreactor (AnMBR) for Palm Oil Mill Effluent (POME) Treatment. MEMBRANES 2021; 11:649. [PMID: 34564466 PMCID: PMC8467421 DOI: 10.3390/membranes11090649] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/24/2021] [Revised: 08/21/2021] [Accepted: 08/22/2021] [Indexed: 12/02/2022]
Abstract
The characteristics of foulant in the cake layer and bulk suspended solids of a 10 L submerged anaerobic membrane bioreactor (AnMBR) used for treatment of palm oil mill effluent (POME) were investigated in this study. Three different organic loading rates (OLRs) were applied with prolonged sludge retention time throughout a long operation time (270 days). The organic foulant was characterized by biomass concentration and concentration of extracellular polymeric substances (EPS). The thicknesses of the cake layer and foulant were analyzed by confocal laser scanning microscopy and Fourier transform infrared spectroscopy. The membrane morphology and inorganic elements were analyzed by field emission scanning electron microscope coupled with energy dispersive X-ray spectrometer. Roughness of membrane was analyzed by atomic force microscopy. The results showed that the formation and accumulation of protein EPS in the cake layer was the key contributor to most of the fouling. The transmembrane pressure evolution showed that attachment, adsorption, and entrapment of protein EPS occurred in the membrane pores. In addition, the hydrophilic charge of proteins and polysaccharides influenced the adsorption mechanism. The composition of the feed (including hydroxyl group and fatty acid compounds) and microbial metabolic products (protein) significantly affected membrane fouling in the high-rate operation.
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Affiliation(s)
- Wiparat Chaipetch
- Center of Excellence in Membrane Science and Technology, Department of Civil and Environmental Engineering, Faculty of Engineering, Prince of Songkla University, Songkhla 90110, Thailand;
| | - Arisa Jaiyu
- Expert Center of Innovative Materials, Thailand Institute of Scientific and Technological Research, Khlong Luang 12120, Thailand;
| | - Panitan Jutaporn
- Research Center for Environmental and Hazardous Substance Management (EHSM), Department of Environmental Engineering, Faculty of Engineering, Khon Kaen University, Khon Kaen 40002, Thailand;
| | - Marc Heran
- Institut Européen des Membranes, IEM, UMR 5635, CNRS, ENSCM, University of Montpellier, CEDEX 5, 34095 Montpellier, France;
| | - Watsa Khongnakorn
- Center of Excellence in Membrane Science and Technology, Department of Civil and Environmental Engineering, Faculty of Engineering, Prince of Songkla University, Songkhla 90110, Thailand;
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Wu Z, Liu Y, Yao J, Zheng X, Wandera SM, Dong R, Li YY, Qiao W. The materials flow and membrane filtration performance in treating the organic fraction of municipal solid waste leachate by a high solid type of submerged anaerobic membrane bioreactor. BIORESOURCE TECHNOLOGY 2021; 329:124927. [PMID: 33706177 DOI: 10.1016/j.biortech.2021.124927] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Revised: 02/24/2021] [Accepted: 02/26/2021] [Indexed: 06/12/2023]
Abstract
The anaerobic digestion of leachate from organic fraction of municipal solid waste (OFMSW) is a long-standing challenge. A submerged anaerobic membrane bioreactor (AnMBR) embedding three flat sheet membrane was therefore continuously operated for 63 days to investigate the materials flow and membrane performance. The results obtained show that approximately 90% COD was removed and 86% was converted into methane under an OLR of 5.6 kgCOD/m3·d corresponding to a HRT of 10 days. Under the high solid condition (34.5-61.1 g/L total solids in AnMBR) and flux of 5 and 6 LMH, the membranes was operated practically at constant trans-membrane pressure (TMP). When the membrane was operated at a high flux of 7 LMH the TMP rapid increase occurred in 22 h resulting in a non-recoverable permeability. A sustainable flux was thus identified. This study demonstrated the feasibility of AnMBR treating OFMSW leachate under high solid condition with high flux.
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Affiliation(s)
- Zhiyue Wu
- College of Engineering, China Agricultural University, 100083, China; Research & Development Center for Efficient Production and Comprehensive Utilization of Biobased Gaseous Fuels, Energy Authority, National Development and Reform Committee, Beijing 100083, China
| | - Yuan Liu
- Everbright Environmental Protection (China) Limited, Shenzhen 518000, China
| | - Junqiang Yao
- College of Engineering, China Agricultural University, 100083, China; Research & Development Center for Efficient Production and Comprehensive Utilization of Biobased Gaseous Fuels, Energy Authority, National Development and Reform Committee, Beijing 100083, China
| | - Xiaoyu Zheng
- Everbright Environmental Technology (China) Co. Ltd., Nanjing 210007, China
| | - Simon Mdondo Wandera
- Department of Civil Engineering, Jomo Kenyatta University of Agriculture & Technology, Box 62000, Nairobi, Kenya
| | - Renjie Dong
- College of Engineering, China Agricultural University, 100083, China; Research & Development Center for Efficient Production and Comprehensive Utilization of Biobased Gaseous Fuels, Energy Authority, National Development and Reform Committee, Beijing 100083, China
| | - Yu-You Li
- Department of Civil and Environmental Engineering, Graduate School of Engineering, Tohoku University, 6-6-06 Aoba, Aramaki-Aza, Sendai, Miyagi 980-8579, Japan
| | - Wei Qiao
- College of Engineering, China Agricultural University, 100083, China; Research & Development Center for Efficient Production and Comprehensive Utilization of Biobased Gaseous Fuels, Energy Authority, National Development and Reform Committee, Beijing 100083, China.
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10
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Niu C, Pan Y, Lu X, Wang S, Zhang Z, Zheng C, Tan Y, Zhen G, Zhao Y, Li YY. Mesophilic anaerobic digestion of thermally hydrolyzed sludge in anaerobic membrane bioreactor: Long-term performance, microbial community dynamics and membrane fouling mitigation. J Memb Sci 2020. [DOI: 10.1016/j.memsci.2020.118264] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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11
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Optimization of In Situ Backwashing Frequency for Stable Operation of Anaerobic Ceramic Membrane Bioreactor. Processes (Basel) 2020. [DOI: 10.3390/pr8050545] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The cost-effective and stable operation of an anaerobic ceramic membrane bioreactor (AnCMBR) depends on operational strategies to minimize membrane fouling. A novel strategy for backwashing, filtration and relaxation was optimized for stable operation of a side stream tubular AnCMBR treating domestic wastewater at the ambient temperature. Two in situ backwashing schemes (once a day at 60 s/day, and twice a day at 60 s × 2/day) maintaining 55 min filtration and 5 min relaxation as a constant were compared. A flux level over 70% of the initial membrane flux was stabilized by in situ permeate backwashing irrespective of its frequency. The in situ backwashing by permeate once a day was better for energy saving, stable membrane filtration and less permeate consumption. Ex situ chemical cleaning after 60 days’ operation was carried out using pure water, sodium hypochlorite (NaOCl), and citric acid as the order. The dominant cake layer was effectively reduced by in situ backwashing, and the major organic foulants were fulvic acid-like substances and humic acid-like substances. Proteobacteria, Firmucutes, Epsilonbacteria and Bacteroides were the major microbes attached to the ceramic membrane fouling layer which were effectively removed by NaOCl.
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12
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Guo Y, Wang Z, Ma Y, Li P, Hu G. A new composite model of the membrane cleaning for predicting the fouling resistance in the hydraulic cleaning process. J Memb Sci 2020. [DOI: 10.1016/j.memsci.2020.117957] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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13
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Ma B, Xue W, Bai Y, Liu R, Chen W, Liu H, Qu J. Enhanced alleviation of ultrafiltration membrane fouling by regulating cake layer thickness with pre-coagulation during drinking water treatment. J Memb Sci 2020. [DOI: 10.1016/j.memsci.2019.117732] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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14
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Ruigómez I, González E, Galán P, Rodríguez-Sevilla J, Vera L. A Rotating Hollow Fiber Module for Fouling Control in Direct Membrane Filtration of Primary Settled Wastewater. Ind Eng Chem Res 2019. [DOI: 10.1021/acs.iecr.9b02893] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ignacio Ruigómez
- Departamento de Ingeniería Química y Tecnología Farmacéutica, Facultad de Ciencias-Sección de Química, Universidad de La Laguna, Av. Astrof. Fco. Sanchez s/n. Apdo. 456, 38200 La Laguna, Tenerife, España
| | - Enrique González
- Departamento de Ingeniería Química y Tecnología Farmacéutica, Facultad de Ciencias-Sección de Química, Universidad de La Laguna, Av. Astrof. Fco. Sanchez s/n. Apdo. 456, 38200 La Laguna, Tenerife, España
| | - Patricia Galán
- Departamento de Ingeniería Química y Tecnología Farmacéutica, Facultad de Ciencias-Sección de Química, Universidad de La Laguna, Av. Astrof. Fco. Sanchez s/n. Apdo. 456, 38200 La Laguna, Tenerife, España
| | - Juan Rodríguez-Sevilla
- Departamento de Ingeniería Química y Tecnología Farmacéutica, Facultad de Ciencias-Sección de Química, Universidad de La Laguna, Av. Astrof. Fco. Sanchez s/n. Apdo. 456, 38200 La Laguna, Tenerife, España
| | - Luisa Vera
- Departamento de Ingeniería Química y Tecnología Farmacéutica, Facultad de Ciencias-Sección de Química, Universidad de La Laguna, Av. Astrof. Fco. Sanchez s/n. Apdo. 456, 38200 La Laguna, Tenerife, España
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15
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Maaz M, Yasin M, Aslam M, Kumar G, Atabani AE, Idrees M, Anjum F, Jamil F, Ahmad R, Khan AL, Lesage G, Heran M, Kim J. Anaerobic membrane bioreactors for wastewater treatment: Novel configurations, fouling control and energy considerations. BIORESOURCE TECHNOLOGY 2019; 283:358-372. [PMID: 30928198 DOI: 10.1016/j.biortech.2019.03.061] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/31/2018] [Revised: 03/11/2019] [Accepted: 03/11/2019] [Indexed: 06/09/2023]
Abstract
Water shortage, public health and environmental protection are key motives to treat wastewater. The widespread adoption of wastewater as a resource depends upon development of an energy-efficient technology. Anaerobic membrane bioreactor (AnMBR) technology has gained increasing popularity due to their ability to offset the disadvantages of conventional treatment technologies. However there are several hurdles, yet to climb over, for wider spread and scale-up of the technology. This paper reviews fundamental aspects of anaerobic digestion of wastewater, and identifies the challenges and opportunities to the further development of AnMBRs. Membrane fouling and its implications are discussed, and strategies to control membrane fouling are proposed. Novel AnMBR configurations are discussed as an integrated approach to overcome technology limitations. Energy demand and recovery in AnMBRs is analyzed. Finally key issues that require urgent attention to facilitate global penetration of AnMBR technology are highlighted.
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Affiliation(s)
- Muhammad Maaz
- Department of Chemical Engineering, COMSATS University Islamabad (CUI), Lahore Campus, Defense Road, Off Raiwind Road, Lahore, Pakistan; Bioenergy & Environmental Sustainable Membrane Technology (BEST) Research Group, COMSATS University Islamabad (CUI), Lahore Campus, Lahore, Pakistan
| | - Muhammad Yasin
- Department of Chemical Engineering, COMSATS University Islamabad (CUI), Lahore Campus, Defense Road, Off Raiwind Road, Lahore, Pakistan; Bioenergy & Environmental Sustainable Membrane Technology (BEST) Research Group, COMSATS University Islamabad (CUI), Lahore Campus, Lahore, Pakistan
| | - Muhammad Aslam
- Department of Chemical Engineering, COMSATS University Islamabad (CUI), Lahore Campus, Defense Road, Off Raiwind Road, Lahore, Pakistan; Bioenergy & Environmental Sustainable Membrane Technology (BEST) Research Group, COMSATS University Islamabad (CUI), Lahore Campus, Lahore, Pakistan.
| | - Gopalakrishnan Kumar
- Institute of Chemistry, Bioscience and Environmental Engineering, Faculty of Science and Technology, University of Stavanger, Box 8600 Forus, 4036 Stavanger, Norway
| | - A E Atabani
- Energy Division, Department of Mechanical Engineering, Faculty of Engineering, Erciyes University, 38039 Kayseri, Turkey
| | - Mubbsher Idrees
- Department of Chemical Engineering, COMSATS University Islamabad (CUI), Lahore Campus, Defense Road, Off Raiwind Road, Lahore, Pakistan; Bioenergy & Environmental Sustainable Membrane Technology (BEST) Research Group, COMSATS University Islamabad (CUI), Lahore Campus, Lahore, Pakistan
| | - Fatima Anjum
- IEM, Univ Montpellier, CNRS, ENSCM, Montpellier, France
| | - Farrukh Jamil
- Department of Chemical Engineering, COMSATS University Islamabad (CUI), Lahore Campus, Defense Road, Off Raiwind Road, Lahore, Pakistan
| | - Rizwan Ahmad
- Department of Chemical Engineering, COMSATS University Islamabad (CUI), Lahore Campus, Defense Road, Off Raiwind Road, Lahore, Pakistan; Bioenergy & Environmental Sustainable Membrane Technology (BEST) Research Group, COMSATS University Islamabad (CUI), Lahore Campus, Lahore, Pakistan; Department of Environmental Engineering, Inha University, Inharo-100, Michuholgu, Incheon, Republic of Korea
| | - Asim Laeeq Khan
- Department of Chemical Engineering, COMSATS University Islamabad (CUI), Lahore Campus, Defense Road, Off Raiwind Road, Lahore, Pakistan; Bioenergy & Environmental Sustainable Membrane Technology (BEST) Research Group, COMSATS University Islamabad (CUI), Lahore Campus, Lahore, Pakistan
| | | | - Marc Heran
- IEM, Univ Montpellier, CNRS, ENSCM, Montpellier, France
| | - Jeonghwan Kim
- Department of Environmental Engineering, Inha University, Inharo-100, Michuholgu, Incheon, Republic of Korea
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16
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Hou B, Kuang Y, Han H, Liu Y, Ren B, Deng R, Hursthouse AS. Enhanced performance and hindered membrane fouling for the treatment of coal chemical industry wastewater using a novel membrane electro-bioreactor with intermittent direct current. BIORESOURCE TECHNOLOGY 2019; 271:332-339. [PMID: 30292132 DOI: 10.1016/j.biortech.2018.09.063] [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: 06/19/2018] [Revised: 09/10/2018] [Accepted: 09/11/2018] [Indexed: 06/08/2023]
Abstract
A membrane electro-bioreactor (MEBR) embracing biological treatment, electrokinetic phenomena and membrane filtration was established by applying intermittent direct current (DC) to MBR. MEBR exhibited significant improvement of treatment performance and reduction of membrane fouling. COD and total phenols removal efficiencies increased to 83.53% and 93.28% at an exposure mode of 24'-OFF/6'-ON, compared to 71.24% and 82.43% in MBR. Trans-membrane pressure increment rate declined dramatically in MEBR, which was mainly attributed to the increase of sludge floc size and decrease of zeta potential, soluble microbial products and specific resistance to filtration, resulted from electrokinetic effects such as electrocoagulation, electrophoresis, electroosmosis and electromigration of ions. It was notable that DC exposure exerted distinct evolution on microbial community, with the improvement of microbial community richness and diversity. The relative abundances of functional genera were promoted noticeably in MEBR. An interactive relevance existed among microbial community structure, mixed liquor properties and operational parameters.
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Affiliation(s)
- Baolin Hou
- Hunan Provincial Key Laboratory of Shale Gas Resource Utilization, School of Civil Engineering, Hunan University of Science and Technology, Xiangtan 411201, China.
| | - Yu Kuang
- Hunan Provincial Key Laboratory of Shale Gas Resource Utilization, School of Civil Engineering, Hunan University of Science and Technology, Xiangtan 411201, China
| | - Hongjun Han
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Ye Liu
- Hunan Provincial Key Laboratory of Shale Gas Resource Utilization, School of Civil Engineering, Hunan University of Science and Technology, Xiangtan 411201, China
| | - Bozhi Ren
- Hunan Provincial Key Laboratory of Shale Gas Resource Utilization, School of Civil Engineering, Hunan University of Science and Technology, Xiangtan 411201, China
| | - Renjian Deng
- Hunan Provincial Key Laboratory of Shale Gas Resource Utilization, School of Civil Engineering, Hunan University of Science and Technology, Xiangtan 411201, China
| | - Andrew S Hursthouse
- Hunan Provincial Key Laboratory of Shale Gas Resource Utilization, School of Civil Engineering, Hunan University of Science and Technology, Xiangtan 411201, China; School of Science & Sport, University of the West of Scotland, Paisley PA1 2BE, UK
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17
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Qin L, Zhang Y, Xu Z, Zhang G. Advanced membrane bioreactors systems: New materials and hybrid process design. BIORESOURCE TECHNOLOGY 2018; 269:476-488. [PMID: 30139558 DOI: 10.1016/j.biortech.2018.08.062] [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: 06/22/2018] [Revised: 08/14/2018] [Accepted: 08/16/2018] [Indexed: 05/26/2023]
Abstract
Membrane bioreactor (MBR) is deemed as one of the most powerful technologies for efficient municipal and industrial wastewater treatment around the world. However, low microbial activity of activated sludge and serious membrane fouling still remain big challenges in worldwide application of MBR technology. Nowadays, more and more progresses on the research and development of advanced MBR with new materials and hybrid process are just on the way. In this paper, an overview on the perspective of high efficient strains applied into MBR for biological activity enhancement and fouling reduction is provided first. Secondly, as emerging fouling control strategy, design and fabrication of novel anti-fouling composited membranes are comprehensively highlighted. Meanwhile, hybrid MBR systems integrated with some novel dynamic membrane modules and/or with other technologies like advanced oxidation processes (AOPs) are introduced and compared. Finally, the challenges and opportunities of advanced MBRs combined with bioenergy production in wastewater treatment are discussed.
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Affiliation(s)
- Lei Qin
- Institute of Oceanic and Environmental Chemical Engineering, State Key Lab Breeding Base of Green Chemical Synthesis Technology, Zhejiang University of Technology, Hangzhou 310014, PR China
| | - Yufan Zhang
- College of Engineering, University of California, Berkeley, CA 94720, USA; Department of Mechanical Engineering, College of Engineering, Carnegie Mellon University, Pittsburgh, PA 15213, USA
| | - Zehai Xu
- Institute of Oceanic and Environmental Chemical Engineering, State Key Lab Breeding Base of Green Chemical Synthesis Technology, Zhejiang University of Technology, Hangzhou 310014, PR China
| | - Guoliang Zhang
- Institute of Oceanic and Environmental Chemical Engineering, State Key Lab Breeding Base of Green Chemical Synthesis Technology, Zhejiang University of Technology, Hangzhou 310014, PR China.
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18
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Cheng H, Hiro Y, Hojo T, Li YY. Upgrading methane fermentation of food waste by using a hollow fiber type anaerobic membrane bioreactor. BIORESOURCE TECHNOLOGY 2018; 267:386-394. [PMID: 30031277 DOI: 10.1016/j.biortech.2018.07.045] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2018] [Revised: 07/05/2018] [Accepted: 07/08/2018] [Indexed: 05/27/2023]
Abstract
In this study, the effects of organic loading rates (OLRs) on anaerobic fermentation of food waste were comprehensively evaluated using a hollow fiber type anaerobic membrane bioreactor (HF-AnMBR). Compared to other OLRs, biogas production rate was highest at the OLR of 9.72 g-COD/L/d, the organic matter removal efficiency was also significantly higher and VFA was in lower concentration. COD conversion efficiency was as high as 92.9%, 85.3%, 82.6% and 80.4% at OLRs of 2.43, 4.86, 7.29 and 9.72 g-COD/L/d, respectively. The major membrane fouling was caused by organic pore blocking, accounting for 59.6% of the total hydraulic resistance after long-term operation. The performance of HF-AnMBR was compared with a continuously stirred tank reactor (CSTR) and a self-agitated reactor (SAR). The higher operation OLRs, COD conversion efficiency and better effluent quality achieved by the HF-AnMBR are evidences of a significant improvement in reactor performance compared to CSTR and SAR.
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Affiliation(s)
- Hui Cheng
- Department of Civil and Environmental Engineering, Graduate School of Engineering, Tohoku University, 6-6-06 Aoba, Aramaki-Aza, Sendai, Miyagi 980-8579, Japan
| | - Yutaka Hiro
- Department of Civil and Environmental Engineering, Graduate School of Engineering, Tohoku University, 6-6-06 Aoba, Aramaki-Aza, Sendai, Miyagi 980-8579, Japan
| | - Toshimasa Hojo
- Department of Civil and Environmental Engineering, Graduate School of Engineering, Tohoku University, 6-6-06 Aoba, Aramaki-Aza, Sendai, Miyagi 980-8579, Japan
| | - Yu-You Li
- Department of Civil and Environmental Engineering, Graduate School of Engineering, Tohoku University, 6-6-06 Aoba, Aramaki-Aza, Sendai, Miyagi 980-8579, Japan; Department of Frontier Science for Advanced Environment, Graduate School of Environmental Sciences, Tohoku University, 6-6-20 Aoba, Aramaki-Aza, Sendai, Miyagi 980-8579, Japan.
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19
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Li J, Jiang C, Shi W, Song F, He D, Miao H, Wang T, Deng J, Ruan W. Polytetrafluoroethylene (PTFE) hollow fiber AnMBR performance in the treatment of organic wastewater with varying salinity and membrane cleaning behavior. BIORESOURCE TECHNOLOGY 2018; 267:363-370. [PMID: 30031274 DOI: 10.1016/j.biortech.2018.07.063] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2018] [Revised: 07/11/2018] [Accepted: 07/12/2018] [Indexed: 06/08/2023]
Abstract
PTFE hollow fiber anaerobic membrane bio-reactor (AnMBR) performance was investigated in the treatment of organic wastewater, with varying salinity and PTFE membrane cleaning behavior. The AnMBR was operated for 226 days, with a total and biological COD removal efficiency of 97.2% and 89.9% respectively, at a NaCl concentration of 35 g L-1. A high number of Proteobacteria (38.2%) and Bacteroidetes (25.9%) were present in the system, with an increase in membrane fouling rate from 1.88 × 1011 to 2.63 × 1011 m-1 d-1 with higher salinity. The effects of soluble microbial products (SMP), extracellular polymeric substances (EPS), low molecular-weight (LMW) carbohydrates, sludge particle size and inorganic element accumulation, were evaluated on membrane fouling. Flux recovery of fouled PTFE membranes reached 91.6% with offline cleaning. Overall, results indicate that PTFE hollow fiber AnMBR provides a promising method for the treatment of saline organic wastewater.
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Affiliation(s)
- Jing Li
- School of Environment and Civil Engineering, Jiangnan University, Wuxi 214122, China; Jiangsu Key Laboratory of Anaerobic Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Changwang Jiang
- School of Environment and Civil Engineering, Jiangnan University, Wuxi 214122, China; Jiangsu Key Laboratory of Anaerobic Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Wansheng Shi
- School of Environment and Civil Engineering, Jiangnan University, Wuxi 214122, China; Jiangsu Key Laboratory of Anaerobic Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Feiyue Song
- School of Environment and Civil Engineering, Jiangnan University, Wuxi 214122, China; Jiangsu Key Laboratory of Anaerobic Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Di He
- School of Environment and Civil Engineering, Jiangnan University, Wuxi 214122, China; Jiangsu Key Laboratory of Anaerobic Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Hengfeng Miao
- School of Environment and Civil Engineering, Jiangnan University, Wuxi 214122, China; Jiangsu Key Laboratory of Anaerobic Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Tao Wang
- School of Environment and Civil Engineering, Jiangnan University, Wuxi 214122, China; Jiangsu Key Laboratory of Anaerobic Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Jingxuan Deng
- School of Environment and Civil Engineering, Jiangnan University, Wuxi 214122, China; Jiangsu Key Laboratory of Anaerobic Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Wenquan Ruan
- School of Environment and Civil Engineering, Jiangnan University, Wuxi 214122, China; Jiangsu Key Laboratory of Anaerobic Biotechnology, Jiangnan University, Wuxi 214122, China; Jiangsu Collaborative Innovation Center of Technology and Material of Water Treatment, Suzhou 215009, China.
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Shin C, Bae J. Current status of the pilot-scale anaerobic membrane bioreactor treatments of domestic wastewaters: A critical review. BIORESOURCE TECHNOLOGY 2018; 247:1038-1046. [PMID: 28919476 DOI: 10.1016/j.biortech.2017.09.002] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2017] [Revised: 08/31/2017] [Accepted: 09/01/2017] [Indexed: 06/07/2023]
Abstract
This review presented the performances of the pilot-scale anaerobic membrane bioreactors (AnMBRs) treating domestic wastewater. High COD removal efficiencies and low biosolids productions were achieved at HRTs comparable to conventional aerobic processes under ambient temperatures. The energy demands for fouling control in the pilot-scale AnMBRs ranged from 0.04 to 1.35kWh/m3, which is lower than those of lab-scale AnMBRs and aerobic MBRs. The energy demands for fouling control were in the order of gas sparging>particle sparging>rotating membrane AnMBR. Two major factors affecting the energy demand in gas sparging AnMBRs were specific gas demands (SGDm) and operating flux. The energy potentials in wastewater were significantly affected by the influent sulfate concentrations. Energy balances indicated that five out of nine pilot-scale AnMBRs was energy positive. However, further improvements of the AnMBRs are required to implement the energy positive wastewater treatment process.
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Affiliation(s)
- Chungheon Shin
- Dept. of Environ. Eng., Inha University, Namgu, Inharo 100, Incheon, Republic of Korea
| | - Jaeho Bae
- Dept. of Environ. Eng., Inha University, Namgu, Inharo 100, Incheon, Republic of Korea.
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22
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The Performance and Fouling Control of Submerged Hollow Fiber (HF) Systems: A Review. APPLIED SCIENCES-BASEL 2017. [DOI: 10.3390/app7080765] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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