中空纤维膜生物反应器膜污染影响因素.pdf

文档介绍：净水技术
净水技术,( ): , Vol. 30, No. 1, 2011
2011 30 1 33-38 66 WATER PURIFICATION TECHNOLOGY Water PurificationFeburary 25th, Technology 2011
中空纤维膜生物反应器膜污染影响因素
陈学民 1,唐玉霖 2,伏小勇 1
( 兰州交通大学环境与市政工程学院,甘肃兰州; 同济大学环境科学与工程学院,上海)
1. 730070 2. 200092
该文研究了两种不同孔径的聚偏氟乙烯中空纤维膜生物反应器( )在城市污水处理过程中不同外界因素对膜污染
摘要 MBR
的影响研究表明造成膜污染的主要因素有活性污泥特性胞外聚合物( ) 膜孔径等试验发现,膜的过滤性能下降并不完
。、 EPS 、。
全由污泥浓度影响,真正造成膜过滤性能的下降可能是由于污泥自身性质的改变随着污泥浓度的增加引起粘度的增加,从而
。
加重的膜的污染越大,膜通量越小在膜反应器中不断积累,改变膜面沉积层的孔隙率和结构,引起膜污染膜孔越
。EPS 。EPS 。
大,滤饼层污染越迅速,通量的衰减越快膜通量初期的衰减速率与膜孔径有关,而最终的稳定通量却与膜孔径无关
。。
膜生物反应器膜污染活性污泥膜孔径
关键词 EPS
中图分类号: 文献标识码:A 文章编号:1009-0177(2011)01-0033-07
Membrane Fouling Factors of Hollow Fiber Membrane in Municipal Wastewater Treat-
ment Process
Chen Xuemin1, Tang Yulin2, Fu Xiaoyong1
(1. School of Environmental and Municipal Engineering, Lanzhou Jiao tong University, Lanzhou 730070, China ;
2. College of Environmental science and engineering, Tongji University, Shanghai 200092, China)
Abstract Paper investigated the external factors effected on membrane fouling of two different membrane aperture PVDF hollow
fiber membranes bioreactor in municipal wastewater treatment process. Results indicated that membrane fouling was affected by
activated sludge properties extracellular polymeric substances (EPS) and membrane aperture but not totally the concentration of
sludge. With the ef