Unravelling the spatial variation of nitrous oxide emissions from a step-feed plug-flow full scale wastewater treatment plant.

Pan, Y; van den Akker, B; Ye, L; Ni, B-J; Watts, S; Reid, K; Yuan, Z

Unravelling the spatial variation of nitrous oxide emissions from a step-feed plug-flow full scale wastewater treatment plant.

Pan, Y van den Akker, B Ye, L Ni, B-J Watts, S Reid, K Yuan, Z

Permalink

Publisher:: Nature Publishing Group
Publication Type:: Journal Article
Citation:: Scientific Reports, 2016, 6, (1), pp. 1-10
Issue Date:: 2016-02-08

Open Access

Copyright Clearance Process

Recently Added
In Progress
Open Access

This item is open access.

Adobe PDF

Download Published versionAdobe PDF (1.45 MB)

View on publisher's site

View statistics

Full metadata record

Field	Value	Language
dc.contributor.author	Pan, Y
dc.contributor.author	van den Akker, B
dc.contributor.author	Ye, L
dc.contributor.author	Ni, B-J
dc.contributor.author	Watts, S
dc.contributor.author	Reid, K
dc.contributor.author	Yuan, Z
dc.date.accessioned	2022-07-18T07:18:16Z
dc.date.available	2016-01-12
dc.date.available	2022-07-18T07:18:16Z
dc.date.issued	2016-02-08
dc.identifier.citation	Scientific Reports, 2016, 6, (1), pp. 1-10
dc.identifier.issn	2045-2322
dc.identifier.issn	2045-2322
dc.identifier.uri	http://hdl.handle.net/10453/159010
dc.description.abstract	Plug-flow activated sludge reactors (ASR) that are step-feed with wastewater are widely adopted in wastewater treatment plants (WWTPs) due to their ability to maximise the use of the organic carbon in wastewater for denitrification. Nitrous oxide (N2O) emissions are expected to vary along these reactors due to pronounced spatial variations in both biomass and substrate concentrations. However, to date, no detailed studies have characterised the impact of the step-feed configuration on emission variability. Here we report on the results from a comprehensive online N2O monitoring campaign, which used multiple gas collection hoods to simultaneously measure emission along the length of a full-scale, step-fed, plug-flow ASR in Australia. The measured N2O fluxes exhibited strong spatial-temporal variation along the reactor path. The step-feed configuration had a substantial influence on the N2O emissions, where the N2O emission factors in sections following the first and second step feed were 0.68% ± 0.09% and 3.5% ± 0.49% of the nitrogen load applied to each section. The relatively high biomass-specific nitrogen loading rate in the second section of the reactor was most likely cause of the high emissions from this section.
dc.format	Electronic
dc.language	eng
dc.publisher	Nature Publishing Group
dc.relation	http://purl.org/au-research/grants/arc/DE130100451
dc.relation.ispartof	Scientific Reports
dc.relation.isbasedon	10.1038/srep20792
dc.rights	info:eu-repo/semantics/openAccess
dc.subject.mesh	Air Pollutants
dc.subject.mesh	Analgesics, Non-Narcotic
dc.subject.mesh	Australia
dc.subject.mesh	Bioreactors
dc.subject.mesh	Nitrogen
dc.subject.mesh	Nitrous Oxide
dc.subject.mesh	Sewage
dc.subject.mesh	Spatio-Temporal Analysis
dc.subject.mesh	Waste Water
dc.subject.mesh	Water Purification
dc.subject.mesh	Air Pollutants
dc.subject.mesh	Analgesics, Non-Narcotic
dc.subject.mesh	Australia
dc.subject.mesh	Bioreactors
dc.subject.mesh	Nitrogen
dc.subject.mesh	Nitrous Oxide
dc.subject.mesh	Sewage
dc.subject.mesh	Spatio-Temporal Analysis
dc.subject.mesh	Waste Water
dc.subject.mesh	Water Purification
dc.subject.mesh	Nitrogen
dc.subject.mesh	Nitrous Oxide
dc.subject.mesh	Analgesics, Non-Narcotic
dc.subject.mesh	Air Pollutants
dc.subject.mesh	Bioreactors
dc.subject.mesh	Sewage
dc.subject.mesh	Water Purification
dc.subject.mesh	Australia
dc.subject.mesh	Waste Water
dc.subject.mesh	Spatio-Temporal Analysis
dc.title	Unravelling the spatial variation of nitrous oxide emissions from a step-feed plug-flow full scale wastewater treatment plant.
dc.type	Journal Article
utslib.citation.volume	6
utslib.location.activity	England
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.consider-herdc	false
dc.date.updated	2022-07-18T07:18:11Z
pubs.issue	1
pubs.publication-status	Published
pubs.volume	6
utslib.citation.issue	1

Abstract:

Plug-flow activated sludge reactors (ASR) that are step-feed with wastewater are widely adopted in wastewater treatment plants (WWTPs) due to their ability to maximise the use of the organic carbon in wastewater for denitrification. Nitrous oxide (N2O) emissions are expected to vary along these reactors due to pronounced spatial variations in both biomass and substrate concentrations. However, to date, no detailed studies have characterised the impact of the step-feed configuration on emission variability. Here we report on the results from a comprehensive online N2O monitoring campaign, which used multiple gas collection hoods to simultaneously measure emission along the length of a full-scale, step-fed, plug-flow ASR in Australia. The measured N2O fluxes exhibited strong spatial-temporal variation along the reactor path. The step-feed configuration had a substantial influence on the N2O emissions, where the N2O emission factors in sections following the first and second step feed were 0.68% ± 0.09% and 3.5% ± 0.49% of the nitrogen load applied to each section. The relatively high biomass-specific nitrogen loading rate in the second section of the reactor was most likely cause of the high emissions from this section.

Please use this identifier to cite or link to this item:

http://hdl.handle.net/10453/159010