THE EVALUATION METHODS AND INDEX SYSTEM OF REVERSE OSMOSIS MEMBRANE FOULING POTENTIAL OF THE INFLUENT IN WASTEWATER RECLAMATION PROCESS: A REVIEW

WU Yin-hu; WANG Qi; TONG Xin; LUO Li-wei; ZHAO Xue-hao; WANG Yun-hong; BAI Yuan; ZHANG Guo-liang; JIN Yan; LIANG Si-yi; HU Hong-ying

doi:10.13205/j.hjgc.202003009

Volume 38 Issue 3

Jun. 2020

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Article Navigation > ENVIRONMENTAL ENGINEERING > 2020 > 38(3): 51-57,109

WU Yin-hu, WANG Qi, TONG Xin, LUO Li-wei, ZHAO Xue-hao, WANG Yun-hong, BAI Yuan, ZHANG Guo-liang, JIN Yan, LIANG Si-yi, HU Hong-ying. THE EVALUATION METHODS AND INDEX SYSTEM OF REVERSE OSMOSIS MEMBRANE FOULING POTENTIAL OF THE INFLUENT IN WASTEWATER RECLAMATION PROCESS: A REVIEW[J]. ENVIRONMENTAL ENGINEERING , 2020, 38(3): 51-57,109. doi: 10.13205/j.hjgc.202003009

Citation:

WU Yin-hu, WANG Qi, TONG Xin, LUO Li-wei, ZHAO Xue-hao, WANG Yun-hong, BAI Yuan, ZHANG Guo-liang, JIN Yan, LIANG Si-yi, HU Hong-ying. THE EVALUATION METHODS AND INDEX SYSTEM OF REVERSE OSMOSIS MEMBRANE FOULING POTENTIAL OF THE INFLUENT IN WASTEWATER RECLAMATION PROCESS: A REVIEW[J]. ENVIRONMENTAL ENGINEERING , 2020, 38(3): 51-57,109. doi: 10.13205/j.hjgc.202003009

Citation:

WU Yin-hu, WANG Qi, TONG Xin, LUO Li-wei, ZHAO Xue-hao, WANG Yun-hong, BAI Yuan, ZHANG Guo-liang, JIN Yan, LIANG Si-yi, HU Hong-ying. THE EVALUATION METHODS AND INDEX SYSTEM OF REVERSE OSMOSIS MEMBRANE FOULING POTENTIAL OF THE INFLUENT IN WASTEWATER RECLAMATION PROCESS: A REVIEW[J]. ENVIRONMENTAL ENGINEERING , 2020, 38(3): 51-57,109. doi: 10.13205/j.hjgc.202003009

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THE EVALUATION METHODS AND INDEX SYSTEM OF REVERSE OSMOSIS MEMBRANE FOULING POTENTIAL OF THE INFLUENT IN WASTEWATER RECLAMATION PROCESS: A REVIEW

doi: 10.13205/j.hjgc.202003009

1. State Key Joint Laboratory of Environmental Simulation and Pollution Control State, Key Laboratory of Environmental Microbial Utilization and Safety Control, School of Environment, Tsinghua University, Beijing 100084, China;
2. Center for Membrane and Water Science & Technology, Institute of Oceanic and Environmental Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China;
3. Vontron Membrane Corporation Limited, Guiyang 550018, China;
4. Capital Engineering & Research Incorporation Limited, Beijing 100176, China;
5. Laboratory of Environmental Science and New Energy Technology Engineering, Tsinghua-Berkeley Shenzhen College, Shenzhen 518055, China

Received Date: 2019-10-18

Abstract

Abstract

Membrane fouling in the reverse osmosis (RO) system for wastewater reclamation is much more severe than that of seawater desalination, mainly due to much higher concentration of organic matters in wastewater. In order to predict and control the fouling problem of RO systems effectively, it is essential to systematically evaluate the RO membrane fouling potential of the feed water. Here, we assessed the most commonly-used indexes and methods for the evaluation of fouling potential in the theoretical research and engineering practice of the RO system, including colloid/particle fouling, inorganic scaling, organic fouling and biofouling. The evaluation and control strategies against colloid/particle fouling and inorganic scaling had been well developed in engineering practice. However, the valid indexes against organic and biological fouling are still deficient in the engineering design of the RO system for wastewater reclamation. As revealed by the recent research, the fouling rate of RO membranes for wastewater reclamation could be retarded effectively when DOC in feed water was below 4 mg/L, which could be used as an indicator of feed water in the engineering design of RO system. Besides, the total amount of organic matter, the organic fouling potential should also be evaluated based on the composition features of organic matter, including molecular weight distribution, hydrophilicity/hydrophobicity and acidity/basicity. Generally, the organic matters with higher molecular weight and hydrophobic-neutral/acidic features showed higher RO membrane fouling potential. As for biofouling, the current indexes could evaluate the total amount of microorganism in the feed water or the biofilm forming rate (BFR) of the feed water, but these indexes were usually ineffective in predicting the biofouling in engineering practice. Thus, the accurate prediction and effective control of biofouling is still the key point in the research field of fouling control for RO system.
- wastewater reclamation,
- reverse osmosis,
- membrane fouling,
- fouling potential,
- evaluation index

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