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

van den Akker, Ben, Trinh, Trang, Coleman, Heather, Stuetz, Richard M., Le-Clech, Pierre and Khan, Stuart J. (2014) Validation of a full-scale membrane bioreactor and the impact of membrane cleaning on the removal of microbial indicators. Bioresource Technology, 155 . pp. 432-437. [Journal article]

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URL: http://dx.doi.org/10.1016/j.biortech.2013.12.123

DOI: doi:10.1016/j.biortech.2013.12.123

Abstract

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 log10 units,while the reduction of clostridia was marginally less at 4.9 log10 units. Removal of bacteriophage wasin excess of 4.6 log10 units. The impact of membrane cleaning on the elimination of microbial indicatorswas 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 by1 log10 unit, but did not affect the removal of bacteriophage or clostridia. Very little research has previouslyexamined the consequences of hazardous events on the performance of full-scale MBRs, and thusthe findings presented here will facilitate improvements for the risk assessment and management ofMBRs used in water recycling schemes.

Item Type:Journal article
Keywords:Membrane bioreactor Log removal Microbial indicators Membrane cleaning Risk assessment
Faculties and Schools:Faculty of Computing & Engineering
Faculty of Computing & Engineering > School of Engineering
Research Institutes and Groups:Engineering Research Institute
Engineering Research Institute > Nanotechnology & Integrated BioEngineering Centre (NIBEC)
ID Code:34963
Deposited By: Dr Heather Coleman
Deposited On:19 Aug 2016 13:37
Last Modified:17 Oct 2017 16:24

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