预处理和膜亲水化改性以减少膜污染。
Pretreatment and membrane hydrophilic modification to reduce membrane fouling.
作者信息
Sun Wen, Liu Junxia, Chu Huaqiang, Dong Bingzhi
机构信息
State Key Laboratory of Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Tongji University, Shanghai 200092, China.
出版信息
Membranes (Basel). 2013 Sep 4;3(3):226-41. doi: 10.3390/membranes3030226.
Abstract
The application of low pressure membranes (microfiltration/ultrafiltration) has undergone accelerated development for drinking water production. However, the major obstacle encountered in its popularization is membrane fouling caused by natural organic matter (NOM). This paper firstly summarizes the two factors causing the organic membrane fouling, including molecular weight (MW) and hydrophilicity/hydrophobicity of NOM, and then presents a brief introduction of the methods which can prevent membrane fouling such as pretreatment of the feed water (e.g., coagulation, adsorption, and pre-oxidation) and membrane hydrophilic modification (e.g., plasma modification, irradiation grafting modification, surface coating modification, blend modification, etc.). Perspectives of further research are also discussed.
摘要
低压膜（微滤/超滤）在饮用水生产中的应用发展迅速。然而，其推广过程中遇到的主要障碍是天然有机物（NOM）导致的膜污染。本文首先总结了导致有机膜污染的两个因素，包括NOM的分子量（MW）和亲水性/疏水性，然后简要介绍了可防止膜污染的方法，如进水预处理（例如混凝、吸附和预氧化）以及膜亲水化改性（例如等离子体改性、辐照接枝改性、表面涂层改性、共混改性等）。还讨论了进一步研究的前景。
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