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| The operational efficiency and pollution characteristics of a two-stage filtration AnMBR reactor |
| XIA Zhi-heng, LI Ying-hao, JIANG Zhao, JIA Meng-fei, WANG Hong-chen, QI Lu, LIU Guo-hua |
| School of Chemistry and Life Resource, Renmin University of China, Beijing 100872, China |
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Abstract A two-stage filtration AnMBR (F-AnMBR) system was constructed, consisting of a primary filter with polymer filter cloth and a dynamic membrane formed on its surface, along with a secondary filter system utilizing polyvinylidene fluoride (PVDF) ultrafiltration membranes. This system was designed to evaluate its effectiveness in treating low-concentration municipal wastewater. Hydrophilic polyamide filter cloth was selected, featuring an 80μm mesh that effectively intercepts sludge at a flux of 12LMH. Following the formation of the dynamic membrane, the total suspended solids (TSS) interception rate exceeded 88%, indicating its suitability for F-AnMBR applications. The primary filtration significantly enhanced the anti-fouling properties of the AnMBR, with the critical flux of the PVDF ultrafiltration membrane increasing from 6LMH to 12LMH. This improvement was accompanied by a notable reduction in the rate of membrane fouling and an increase in the transmembrane pressure difference. Analyses revealed that the dynamic membrane component reduced membrane fouling substances, such as mixed liquor suspended solids (MLSS), mixed liquor volatile suspended solids (MLVSS), and extracellular polymeric substances (EPS) in the membrane pool by over 50%, effectively delaying the formation of the ultrafiltration membrane cake layer contamination. However, the dynamic membrane's ability to intercept soluble microbial products (SMP) was relatively limited, achieving only a 19.34% reduction in soluble protein content, which constrained the overall improvement of gel layer contamination.
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Received: 10 April 2024
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[1] 程东兴,胡以松,屈 艺,等.AnMBR处理剩余污泥与厨余共消化的效能研究 [J]. 中国环境科学, 2023,43(9):4676-4687. Cheng D, Hu Y, Qu Y, et al. Study on the performance of AnMBR in treating the co-digestion of sewage sludge and food waste [J]. China Environmental Science, 2023,43(9):4676-4687.
[2] 鲁 斌,龚 凯,蒋红与,等.AnMBR用于餐厨垃圾和剩余污泥共发酵的性能研究 [J]. 中国环境科学, 2021,41(5):2290-2298. Lu B, Gong K, Jiang H, et al. Performance of AnMBR for the co-digestion of food waste and waste activity sludge [J]. China Environmental Science, 2021,41(5):2290-2298.
[3] 乔 玮,姜萌萌,熊林鹏,等.厌氧平板膜生物反应器连续处理猪场废水研究 [J]. 中国环境科学, 2018,38(12):4502-4508. Qiao W, Jiang M, Xiong L, et al. Continuous methane fermentation of swine wastewater using a flat sheet membrane bio-reactor [J]. China Environmental Science, 2018,38(12):4502-4508.
[4] Mccarty P L, Bae J, Kim J. Domestic wastewater treatment as a net energy producer--can this be achieved? [J]. Environmental Science & Technology, 2011,45(17):7100-7106.
[5] Hu Y, Cheng H, Ji J, et al. A review of anaerobic membrane bioreactors for municipal wastewater treatment with a focus on multicomponent biogas and membrane fouling control [J]. Environmental Science: Water Research & Technology, 2020,6(10): 2641-2663.
[6] Vinardell S, Aatals S, Peces M, et al. Advances in anaerobic membrane bioreactor technology for municipal wastewater treatment: A 2020updated review [J]. Renewable and Sustainable Energy Reviews, 2020,130.
[7] 李英豪,姜 昭,王洪臣,等.厌氧膜生物反应器处理市政污水研究进展 [J]. 环境工程, 2023,41(5):202-212. Li Y, Jiang Z, Wang H, Liu G, Qi L. Research progress of anaerobic membrane bioreactor(ANMBR) process for municipal wastewater treatment [J]. Environmental Engineering, 2023,41(5):202-212.
[8] Hu Y, Cai X, Xue Y, et al. Recent developments of anaerobic membrane bioreactors for municipal wastewater treatment and bioenergy recovery: Focusing on novel configurations and energy balance analysis [J]. Journal of Cleaner Production, 2022,356.
[9] Siddiqui M A, Biswal B K, Saleem M, et al. Anaerobic self-forming dynamic membrane bioreactors (AnSFDMBRs) for wastewater treatment-Recent advances, process optimization and perspectives [J]. Bioresource Technology, 2021,332:125101.
[10] Walker M, Banks C J, Heaven S. Development of a coarse membrane bioreactor for two-stage anaerobic digestion of biodegradable municipal solid waste [J]. Water Research & Technology, 2009,59(4): 729-735.
[11] Jeison D, Días I, Van Lier J B. Anaerobic membrane bioreactors: Are membranes really necessary? [J]. Electronic Journal of Biotechnology, 2008,11(4):1-2.
[12] Ersahin M E, Ozgun H, Van Lier J B. Effect of Support Material Properties on Dynamic Membrane Filtration Performance [J]. Separation Science and Technology, 2013,48(15):2263-2269.
[13] Goh P S, Lau W J, Othman M H D, et al. Membrane fouling in desalination and its mitigation strategies [J]. Desalination, 2018,425: 130-155.
[14] Le Clech P, Jefferson B, Chang I S, et al. Critical flux determination by the flux-step method in a submerged membrane bioreactor [J]. Journal of Membrane Science, 2003,227(1/2):81-93.
[15] 程 刚.外置式AFDMBR城市污水处理技术研究 [D]. 武汉:武汉科技大学, 2018. Cheng G. The study of external anaerobic fluidized bed dynamic membrane bioreactor for municipal wastewater treatment [D]. Wuhan: Wuhan University of Science and Technology, 2018.
[16] Field R W, Pearce G K. Critical, sustainable and threshold fluxes for membrane filtration with water industry applications [J]. Advances in Colloid and Interface Science, 2011,164(1):38-44.
[17] Chen R, Wen W, Jiang H, et al. Energy recovery potential of thermophilic high-solids co-digestion of coffee processing wastewater and waste activated sludge by anaerobic membrane bioreactor [J]. Bioresource Technology, 2019,274:127-133.
[18] Chen J P, Kim S L, Ting Y P. Optimization of membrane physical and chemical cleaning by a statistically designed approach [J]. Journal of Membrane Science, 2003,219(1):27-45.
[19] Liu Z, Zhu X, Liang P, et al. Distinction between polymeric and ceramic membrane in AnMBR treating municipal wastewater: In terms of irremovable fouling [J]. Journal of Membrane Science, 2019,588.
[20] Nguyen T T, Kook S, Lee C, et al. Critical flux-based membrane fouling control of forward osmosis: Behavior, sustainability, and reversibility [J]. Journal of Membrane Science, 2019,570-571:380-393.
[21] Johnson D J, Oatley-radcliffe D L, Hilal N. State of the art review on membrane surface characterisation: Visualisation, verification and quantification of membrane properties [J]. Desalination, 2018,434: 12-36.
[22] Liu B, Zhang S, Wang X, et al. Efficient and reusable polyamide-56nanofiber/nets membrane with bimodal structures for air filtration [J]. Journal of Colloid and Interface Science, 2015,457:203-211.
[23] Wakeman R. The influence of particle properties on filtration [J]. Separation and Purification Technology, 2007,58(2):234-241.
[24] Xu T, Zhang J, Guo H, et al. Antifouling Fibrous Membrane Enables High Efficiency and High-Flux Microfiltration for Water Treatment [J]. ACS Applied Materials & Interfaces, 2021,13(41):49254-49265.
[25] Satyawali Y, Balakrishnan M. Treatment of distillery effluent in a membrane bioreactor (MBR) equipped with mesh filter [J]. Separation and Purification Technology, 2008,63(2):278-286.
[26] Yang Y, Hu Y, Duan A, et al. Characterization of preconcentrated domestic wastewater toward efficient bioenergy recovery: Applying size fractionation, chemical composition and biomethane potential assay [J]. Bioresource Technology, 2021,319:124144.
[27] Jeong S, Cho K, Jeong D, et al. Effect of engineered environment on microbial community structure in biofilter and biofilm on reverse osmosis membrane [J]. Water Research, 2017,124:227-237.
[28] Yang Y, Zang Y, Hu Y, et al. Upflow anaerobic dynamic membrane bioreactor (AnDMBR) for wastewater treatment at room temperature and short HRTs: Process characteristics and practical applicability [J]. Chemical Engineering Journal, 2020,383.
[29] Ersahin M E, Ozgun H, Tao Y, et al. Applicability of dynamic membrane technology in anaerobic membrane bioreactors [J]. Water Research, 2014,48:420-429.
[30] Ahmar Siddiqui M, Dai J, Guan D, et al. Exploration of the formation of self-forming dynamic membrane in an upflow anaerobic sludge blanket reactor [J]. Separation and Purification Technology, 2019,212: 757-766.
[31] Sissiqui M A, Dai J, Luo Y, et al. Investigation of the short-term effects of extracellular polymeric substance accumulation with different backwashing strategies in an anaerobic self-forming dynamic membrane bioreactor [J]. Water Research, 2020,185:116283.
[32] Lei Z, Yang S, Li X, et al. Revisiting the effects of powdered activated carbon on membrane fouling mitigation in an anaerobic membrane bioreactor by evaluating long-term impacts on the surface layer [J]. Water Research, 2019,167:115137.
[33] Lei Z, Ma Y, Wang J, et al. Biochar addition supports high digestion performance and low membrane fouling rate in an anaerobic membrane bioreactor under low temperatures [J]. Bioresource Technology, 2021,330:124966. |
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