Effect of pH on UF membrane fouling

被引：39

作者：

Dong, B. Z. ^{[1
]}

Chen, Y. ^{[1
]}

Gao, N. Y. ^{[1
]}

Fan, J. C. ^{[1
]}

机构：

[1] Tongji Univ, State Key Lab Pollut Control & Resource Reuse, Shanghai 200092, Peoples R China

来源：

DESALINATION | 2006年 / 195卷 / 1-3期

关键词：

ultrafiltration; NOM; filtration resistance; fouling; pH; drinking water treatment;

D O I：

10.1016/j.desal.2005.11.012

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The effect of pH on membrane fouling with and without coagulation pretreatment was investigated. In order to better understand fouling at different pH values, the filtration resistance was divided into membrane resistance, reversible resistance and irreversible resistance. The reduction in pH could decrease molecular size of NOM and enhance the adsorption onto membrane, resulting in a significant fouling. With coagulation as pretreatment, the reduction in pH could enhance NOM removal by coagulation and reduce the concentration of NOM in feed water for membrane filtration, resulting in mitigation of fouling. Nevertheless, after coagulation, fouling could occur at a lower pH.

引用

页码：201 / 208

页数：8

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