Effects of extracellular polymeric substances on aerobic granulation in sequencing batch reactors

被引：188

作者：

Wang, Zhiping

Liu, Lili

Yao, He

Cai, Weimin

机构：

[1] Shanghai Jiao Tong Univ, Sch Environm Sci & Engn, Shanghai 200240, Peoples R China

[2] Harbin Inst Technol, Sch Civil & Environm Engn, Dept Environm Sci & Engn, Harbin 150090, Peoples R China

来源：

CHEMOSPHERE | 2006年 / 63卷 / 10期

关键词：

extracellular polymeric substances; aerobic granular sludge; hydrophobicity; surface charge;

D O I：

10.1016/j.chemosphere.2005.09.018

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The effects of extracellular polymeric substances on aerobic granulation in sequencing batch reactors were investigated by evaluating the content and compositions of extracellular polymeric substances, and the relationship between extracellular polymeric substances composition and surface properties of glucose-fed aerobic granules. The results showed that extracellular polymeric substances could affect surface properties of cells, such as surface charge and hydrophobicity, enhance polymeric interaction and promote aerobic granulation. Moreover, extracellular polymeric substances were produced mainly in the exponential phase, and served as carbon and energy source in starvation phase during granulation process, thus regulating the growth of bacteria in the interior and exterior of granules, and maintaining the integrality of granules. (c) 2005 Elsevier Ltd. All rights reserved.

引用

页码：1728 / 1735

页数：8

共 27 条

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