Influence of temperature and temperature shock on sludge properties, cake layer structure, and membrane fouling in a submerged anaerobic membrane bioreactor

被引：58
|
作者：
Gao, W. J. [1 ,2 ]
Qu, X. [1 ]
Leung, K. T. [2 ,3 ]
Liao, B. Q. [1 ,2 ]
机构：
[1] Lakehead Univ, Dept Chem Engn, Thunder Bay, ON P7B 5E1, Canada
[2] Lakehead Univ, Biotechnol Res Program, Thunder Bay, ON P7B 5E1, Canada
[3] Lakehead Univ, Dept Biol, Thunder Bay, ON P7B 5E1, Canada
来源：
JOURNAL OF MEMBRANE SCIENCE | 2012年 / 421卷
基金：
加拿大自然科学与工程研究理事会;
关键词：
Temperature; Cake layer structure; Sludge properties; Membrane fouling; Anaerobic membrane bioreactor; EXTRACELLULAR POLYMERIC SUBSTANCES; MICROBIAL COMMUNITY STRUCTURE; WASTE-WATER TREATMENT; ACTIVATED-SLUDGE; RETENTION TIME; PERFORMANCE; ULTRAFILTRATION; EPS; EXTRACTION; STABILITY;
D O I：
10.1016/j.memsci.2012.07.003
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
Effects of temperature and temperature shock on sludge properties, cake layer structure and membrane fouling of a laboratory-scale submerged anaerobic membrane bioreactor (SAnMBR) was studied over 416 day using various analytical tools. Polymerase chain reaction (PCR)-denaturing gradient gel electrophoresis (DGGE) analysis indicated that there were significant differences in species diversity and richness among different operating temperatures and cake ages in cake sludge. The bound extracellular polymeric substances (EPS) in bulk sludge, soluble microbial products (SMP), and colloidal particles content increased with an increase in operating temperature. Temperature shocks had modest impact on bound EPS and SMP in bulk sludge. The particle size of the cake layers decreased with an increase in operating temperature and increased with an increase in cake age, while the quantity of bound EPS in the cake layer decreased with an increase in operating temperature and cake age. The extent of membrane fouling increased with an increase in the operating temperature, whereas temperature shocks temporarily decreased fouling resistance. (C) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码：131 / 144
页数：14
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