膜污染
结垢
生物污染
膜
胞外聚合物
过滤(数学)
水处理
膜技术
化学
环境工程
污水处理
制浆造纸工业
化学工程
环境科学
工程类
生物化学
生物
统计
数学
生物膜
细菌
遗传学
作者
Maocai Shen,Xiaochen Zhang,Shiwei Liu,Tong Hu,Kaixuan Zheng,Yulai Wang,Jing Lian,Meng Guo
标识
DOI:10.1016/j.scitotenv.2023.163467
摘要
Effluent from sewage treatment plant, as an important source of microplastics (MPs) in receiving water, has attracted extensive attention. Membrane separation process shows good microplastic removal performance in the existing tertiary water treatment process. Problematically, membrane fouling and insufficient removal of small organic molecules are still the key obstacles to its further extensive application. Dissolved organics, extracellular polymers and suspended particles in the influent are deposited on the membrane surface and internal structure, reducing the number and pore diameter of effective membrane aperture, and increasing the resistance of membrane filtration. Exploring the mechanism and approach of membrane fouling caused by micro/nanoplastics is the key to alleviate fouling and allow membranes to operate longer. In this paper, removal performance of micro/nanoplastics by current membrane filtration and the contribution to membrane fouling during water treatment are thoroughly reviewed. The coupling mechanisms between micro/nanoplastics and other pollutants and mechanism of membrane fouling caused by composite micro/nanoplastics are discussed. Additionally, on this basis, the prospect of combined process for micro/nanoplastic removal and membrane fouling prevention is also proposed and discussed, which provides a valuable reference for the preferential removal of micro/nanoplastics and development of antifouling membrane.
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