Sludge cycling between aerobic, anoxic and anaerobic regimes to reduce sludge production during wastewater treatment: Performance, mechanisms, and implications

Semblante, GU; Hai, FI; Ngo, HH; Guo, W; You, SJ; Price, WE; Nghiem, LD

Sludge cycling between aerobic, anoxic and anaerobic regimes to reduce sludge production during wastewater treatment: Performance, mechanisms, and implications

Semblante, GU Hai, FI Ngo, HH

Guo, W

You, SJ Price, WE Nghiem, LD

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Publication Type:: Journal Article
Citation:: Bioresource Technology, 2014, 155 pp. 395 - 409
Issue Date:: 2014-01-01

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Field	Value	Language
dc.contributor.author	Semblante, GU	en_US
dc.contributor.author	Hai, FI	en_US
dc.contributor.author	Ngo, HH https://orcid.org/0000-0002-0296-2866	en_US
dc.contributor.author	Guo, W https://orcid.org/0000-0001-5542-2858	en_US
dc.contributor.author	You, SJ	en_US
dc.contributor.author	Price, WE	en_US
dc.contributor.author	Nghiem, LD https://orcid.org/0000-0002-9039-5792	en_US
dc.date.available	2014-01-08	en_US
dc.date.issued	2014-01-01	en_US
dc.identifier.citation	Bioresource Technology, 2014, 155 pp. 395 - 409	en_US
dc.identifier.issn	0960-8524	en_US
dc.identifier.uri	http://hdl.handle.net/10453/33351
dc.description.abstract	Alternate cycling of sludge in aerobic, anoxic, and anaerobic regimes is a promising strategy that can reduce the sludge yield of conventional activated sludge (CAS) by up to 50% with potentially lower capital and operating cost than physical- and/or chemical-based sludge minimisation techniques. The mechanisms responsible for reducing sludge yield include alterations to cellular metabolism and feeding behaviour (metabolic uncoupling, feasting/fasting, and endogenous decay), biological floc destruction, and predation on bacteria by higher organisms. Though discrepancies across various studies are recognisable, it is apparent that sludge retention time, oxygen-reduction potential of the anaerobic tank, temperature, sludge return ratio and loading mode are relevant to sludge minimisation by sludge cycling approaches. The impact of sludge minimisation on CAS operation (e.g., organics and nutrient removal efficiency and sludge settleability) is highlighted, and key areas requiring further research are also identified. © 2014 Elsevier Ltd.	en_US
dc.relation.ispartof	Bioresource Technology	en_US
dc.relation.isbasedon	10.1016/j.biortech.2014.01.029	en_US
dc.subject.classification	Biotechnology	en_US
dc.subject.mesh	Temperature	en_US
dc.subject.mesh	Sewage	en_US
dc.subject.mesh	Waste Disposal, Fluid	en_US
dc.subject.mesh	Water Purification	en_US
dc.subject.mesh	Aerobiosis	en_US
dc.subject.mesh	Anaerobiosis	en_US
dc.subject.mesh	Oxidation-Reduction	en_US
dc.subject.mesh	Waste Water	en_US
dc.title	Sludge cycling between aerobic, anoxic and anaerobic regimes to reduce sludge production during wastewater treatment: Performance, mechanisms, and implications	en_US
dc.type	Journal Article
utslib.citation.volume	155	en_US
utslib.for	0904 Chemical Engineering	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
pubs.organisational-group	/University of Technology Sydney/Strength - CTWW - Centre for Technology in Water and Wastewater Treatment
utslib.copyright.status	closed_access
pubs.publication-status	Published	en_US
pubs.volume	155	en_US

Abstract:

Alternate cycling of sludge in aerobic, anoxic, and anaerobic regimes is a promising strategy that can reduce the sludge yield of conventional activated sludge (CAS) by up to 50% with potentially lower capital and operating cost than physical- and/or chemical-based sludge minimisation techniques. The mechanisms responsible for reducing sludge yield include alterations to cellular metabolism and feeding behaviour (metabolic uncoupling, feasting/fasting, and endogenous decay), biological floc destruction, and predation on bacteria by higher organisms. Though discrepancies across various studies are recognisable, it is apparent that sludge retention time, oxygen-reduction potential of the anaerobic tank, temperature, sludge return ratio and loading mode are relevant to sludge minimisation by sludge cycling approaches. The impact of sludge minimisation on CAS operation (e.g., organics and nutrient removal efficiency and sludge settleability) is highlighted, and key areas requiring further research are also identified. © 2014 Elsevier Ltd.

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http://hdl.handle.net/10453/33351