A new step aeration approach towards the improvement of nitrogen removal in a full scale Carrousel oxidation ditch

Jin, P; Wang, X; Ngo, HH; Jin, X

A new step aeration approach towards the improvement of nitrogen removal in a full scale Carrousel oxidation ditch

Jin, P Wang, X Ngo, HH

Jin, X

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Publication Type:: Journal Article
Citation:: Bioresource Technology, 2015, 198 pp. 23 - 30
Issue Date:: 2015-12-01

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Field	Value	Language
dc.contributor.author	Jin, P	en_US
dc.contributor.author	Wang, X	en_US
dc.contributor.author	Ngo, HH https://orcid.org/0000-0002-0296-2866	en_US
dc.contributor.author	Jin, X	en_US
dc.date.available	2020-05-25T19:10:16Z
dc.date.issued	2015-12-01	en_US
dc.identifier.citation	Bioresource Technology, 2015, 198 pp. 23 - 30	en_US
dc.identifier.issn	0960-8524	en_US
dc.identifier.uri	http://hdl.handle.net/10453/38424
dc.identifier.uri	http://hdl.handle.net/10453/37666
dc.description.abstract	© 2015 Elsevier Ltd. Two aeration modes, step aeration and point aeration, were used in a full-scale Carrousel oxidation ditch with microporous aeration. The nitrogen removal performance and mechanism were analyzed. With the same total aeration input, both aeration modes demonstrated good nitrification outcomes with the average efficiency in removing NH4+-N of more than 98%. However, the average removal efficiencies for total nitrogen were 89.3% and 77.6% under step aeration and point aeration, respectively. The results indicated that an extended aerobic zone followed the aeration zones could affect the proportion of anoxic and oxic zones. The step aeration with larger anoxic zones indicated better TN removal efficiency. More importantly, step aeration provided the suitable environment for both nitrifiers and denitrifiers. The diversity and relative abundance of denitrifying bacteria under the step aeration (1.55%) was higher than that under the point aeration (1.12%), which resulted in an overall higher TN removal efficiency.	en_US
dc.relation.ispartof	Bioresource Technology	en_US
dc.relation.isbasedon	10.1016/j.biortech.2015.08.145	en_US
dc.subject.classification	Biotechnology	en_US
dc.subject.mesh	Bacteria	en_US
dc.subject.mesh	Nitrogen	en_US
dc.subject.mesh	Sewage	en_US
dc.subject.mesh	Water Purification	en_US
dc.subject.mesh	Denitrification	en_US
dc.subject.mesh	Nitrification	en_US
dc.title	A new step aeration approach towards the improvement of nitrogen removal in a full scale Carrousel oxidation ditch	en_US
dc.type	Journal Article
utslib.citation.volume	198	en_US
utslib.for	090404 Membrane and Separation Technologies	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	open_access
pubs.publication-status	Published	en_US
pubs.volume	198	en_US

Abstract:

© 2015 Elsevier Ltd. Two aeration modes, step aeration and point aeration, were used in a full-scale Carrousel oxidation ditch with microporous aeration. The nitrogen removal performance and mechanism were analyzed. With the same total aeration input, both aeration modes demonstrated good nitrification outcomes with the average efficiency in removing NH4+-N of more than 98%. However, the average removal efficiencies for total nitrogen were 89.3% and 77.6% under step aeration and point aeration, respectively. The results indicated that an extended aerobic zone followed the aeration zones could affect the proportion of anoxic and oxic zones. The step aeration with larger anoxic zones indicated better TN removal efficiency. More importantly, step aeration provided the suitable environment for both nitrifiers and denitrifiers. The diversity and relative abundance of denitrifying bacteria under the step aeration (1.55%) was higher than that under the point aeration (1.12%), which resulted in an overall higher TN removal efficiency.

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http://hdl.handle.net/10453/37666