余良正,杨彬,雷乐成

• 1:浙江大学 化学工程与生物工程学院， 浙江 杭州 310027

摘要(Abstract)：

针对膜生物反应器（MBR）中膜污染现象，提出投加活性炭方法抑制膜污染。对比了粉末活性炭（PAC）和颗粒活性炭（GAC）对MBR出水水质及膜污染速率的影响，分析了活性污泥性质，如溶解性微生物产物（SMP）、胞外聚合物（EPS）、絮体粒径分布、毛细吸水时间（CST），及膜面污泥层，得到了膜污染减缓机理。结果表明，MBR对总有机碳（TOC）和氨氮的去除率分别大于97%和98%，PAC组TOC去除率略高于GAC组和对照组。PAC的加入明显减少了与膜污染相关的SMP和松散结合型胞外聚合物（LB-EPS）浓度，降低了膜污染速率。GAC则主要通过冲刷破坏膜表面污泥层，抑制污泥层的生长，减缓了膜污染。

关键词(KeyWords)： 膜生物反应器;膜污染;活性炭;溶解性微生物;胞外聚合物

Abstract:

Keywords:

基金项目(Foundation): 国家水体污染控制与治理科技重大专项（2017ZX07101003）；国家自然科学基金（U1462201，21676246）；浙江省自然科学基金（Y17B060023）。

作者(Author): 余良正,杨彬,雷乐成

DOI: 10.3969/j.issn.1003-9015.2020.01.033

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