Validation of a full-scale membrane bioreactor and the impact of membrane cleaning on the removal of microbial indicators

被引：32

作者：

van den Akker, Ben ^{[1
]}

Trang Trinh ^{[1
]}

Coleman, Heather M. ^{[1
]}

Stuetz, Richard M. ^{[1
]}

Le-Clech, Pierre ^{[2
]}

Khan, Stuart J. ^{[1
]}

机构：

[1] Univ New S Wales, Sch Civil & Environm Engn, UNSW Water Res Ctr, Sydney, NSW 2052, Australia

[2] Univ New S Wales, Sch Chem Engn, UNESCO, Ctr Membrane Sci & Technol, Sydney, NSW 2052, Australia

来源：

BIORESOURCE TECHNOLOGY | 2014年 / 155卷

基金：

澳大利亚研究理事会;

关键词：

Membrane bioreactor; Log removal; Microbial indicators; Membrane cleaning; Risk assessment; WASTE-WATER; MICROORGANISMS; BACTERIOPHAGE; COLIPHAGES; FATE;

D O I：

10.1016/j.biortech.2013.12.123

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

The removal of microbial indicators through a full-scale membrane bioreactor (MBR) was characterised. The overall log reduction of Escherichia coli and total coliforms were in the range of 5.0-5.9 log(10) units, while the reduction of clostridia was marginally less at 4.9 log(10) units. Removal of bacteriophage was in excess of 4.6 log(10) units. The impact of membrane cleaning on the elimination of microbial indicators was also assessed since this had been identified by pilot-scale studies as a potential hazardous event. Membrane cleaning temporarily reduced the log removal values of E. coli and total coliforms each by 1 log(10) unit, but did not affect the removal of bacteriophage or clostridia. Very little research has previously examined the consequences of hazardous events on the performance of full-scale MBRs, and thus the findings presented here will facilitate improvements for the risk assessment and management of MBRs used in water recycling schemes. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：432 / 437

页数：6

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