Effect of phosphorus load on nutrients removal and N<inf>2</inf>O emission during low-oxygen simultaneous nitrification and denitrification process

Jia, W; Liang, S; Ngo, HH; Guo, W; Zhang, J; Wang, R; Zou, Y

Effect of phosphorus load on nutrients removal and N<inf>2</inf>O emission during low-oxygen simultaneous nitrification and denitrification process

Jia, W Liang, S Ngo, HH

Guo, W

Zhang, J Wang, R Zou, Y

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Publication Type:: Journal Article
Citation:: Bioresource Technology, 2013, 141 pp. 123 - 130
Issue Date:: 2013-01-01

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Field	Value	Language
dc.contributor.author	Jia, W	en_US
dc.contributor.author	Liang, S	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	Zhang, J	en_US
dc.contributor.author	Wang, R	en_US
dc.contributor.author	Zou, Y	en_US
dc.date.available	2013-02-23	en_US
dc.date.issued	2013-01-01	en_US
dc.identifier.citation	Bioresource Technology, 2013, 141 pp. 123 - 130	en_US
dc.identifier.issn	0960-8524	en_US
dc.identifier.uri	http://hdl.handle.net/10453/27561
dc.description.abstract	Three laboratory scale anaerobic-aerobic (low-oxygen) SBRs (R1, R2 and R3) were conducted at different influent phosphorus concentration to evaluate the impacts of phosphorus load on nutrients removal and nitrous oxide (N2O) emission during low-oxygen simultaneous nitrification and denitrification (SND) process. The results showed that TP and TN removals were enhanced simultaneously with the increase in phosphorus load. It was mainly caused by the enrichment of polyphosphate accumulating organisms (PAOs) under high phosphorus load and low COD/P ratio (<50), which could use nitrate/nitrite as electron acceptors to take up the phosphorus. N2O emission was reduced with increasing phosphorus load. N2O-N emission amount per cycle of R3 was 24.1% lower than that of R1. It was due to the decrease of N2O yield by heterotrophic denitrification. When the phosphorus load increased from R1 to R3, heterotrophic denitrification (D) ranged from 42.6% to 36.6% of the N2O yield. © 2013 Elsevier Ltd.	en_US
dc.relation.ispartof	Bioresource Technology	en_US
dc.relation.isbasedon	10.1016/j.biortech.2013.02.095	en_US
dc.subject.classification	Biotechnology	en_US
dc.subject.mesh	Oxygen	en_US
dc.subject.mesh	Phosphorus	en_US
dc.subject.mesh	Nitrogen Dioxide	en_US
dc.subject.mesh	Water Purification	en_US
dc.subject.mesh	Denitrification	en_US
dc.subject.mesh	Waste Water	en_US
dc.title	Effect of phosphorus load on nutrients removal and N<inf>2</inf>O emission during low-oxygen simultaneous nitrification and denitrification process	en_US
dc.type	Journal Article
utslib.citation.volume	141	en_US
utslib.for	0904 Chemical Engineering	en_US
dc.location.activity	Melbourne, AUSTRALIA
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	141	en_US

Abstract:

Three laboratory scale anaerobic-aerobic (low-oxygen) SBRs (R1, R2 and R3) were conducted at different influent phosphorus concentration to evaluate the impacts of phosphorus load on nutrients removal and nitrous oxide (N2O) emission during low-oxygen simultaneous nitrification and denitrification (SND) process. The results showed that TP and TN removals were enhanced simultaneously with the increase in phosphorus load. It was mainly caused by the enrichment of polyphosphate accumulating organisms (PAOs) under high phosphorus load and low COD/P ratio (<50), which could use nitrate/nitrite as electron acceptors to take up the phosphorus. N2O emission was reduced with increasing phosphorus load. N2O-N emission amount per cycle of R3 was 24.1% lower than that of R1. It was due to the decrease of N2O yield by heterotrophic denitrification. When the phosphorus load increased from R1 to R3, heterotrophic denitrification (D) ranged from 42.6% to 36.6% of the N2O yield. © 2013 Elsevier Ltd.

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