A comprehensive study into fouling properties of extracellular polymeric substance (EPS) extracted from bulk sludge and cake sludge in a mesophilic anaerobic membrane bioreactor

被引：81

作者：

Ding, Yi ^{[2
]}

Tian, Yu ^{[1
,2
]}

Li, Zhipeng ^{[3
]}

Zuo, Wei ^{[2
]}

Zhang, Jun ^{[2
]}

机构：

[1] Harbin Inst Technol SKLUWRE HIT, State Key Lab Urban Water Resource & Environm, Harbin 150090, Peoples R China

[2] Harbin Inst Technol, Sch Municipal & Environm Engn, Harbin 150090, Peoples R China

[3] Harbin Inst Technol, Sch Marine Sci & Technol, Weihai 264200, Peoples R China

来源：

BIORESOURCE TECHNOLOGY | 2015年 / 192卷

关键词：

Anaerobic membrane bioreactor; Fouling properties; Extracellular polymeric substances (EPS); Bulk sludge; Cake sludge; SOLUBLE MICROBIAL PRODUCTS; WASTE-WATER TREATMENT; WORM REACTOR; RETENTION TIMES; ORGANIC-MATTER; NANOFILTRATION; IDENTIFICATION; LAYER; MBR; SMP;

D O I：

10.1016/j.biortech.2015.05.067

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

This study focused on the fouling behaviors of extracellular polymeric substances (EPS) in a mesophilic anaerobic membrane bioreactor (AnMBR) to obtain the relations of EPS specific constituents with membrane fouling. It was found that for the EPS extracted from bulk sludge, the LB-EPS induced the largest flux decline; however, for EPS extracted from cake sludge, the S-EPS caused the highest flux decline. The preferential rejection fraction by membrane further confirmed that the greater flux decline was exhibited with the higher percent rejection of EPS fractions. The adhesion and cohesion interactions of EPS fractions and membranes could explain the different rejection rates of the EPS components. The structural characteristics analysis indicated that the fouling layers of different EPS fractions with the greater loss of filterability had the smaller porosity. Further investigations demonstrated that these changes could be attributed to the different content of HPO-N in EPS fractions. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：105 / 114

页数：10

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