A Roadmap for Achieving Energy-Positive Sewage Treatment Based on Sludge Treatment Using Free Ammonia

Wang, Q

A Roadmap for Achieving Energy-Positive Sewage Treatment Based on Sludge Treatment Using Free Ammonia

Wang, Q

Permalink

Publisher:: American Chemical Society
Publication Type:: Journal Article
Citation:: ACS Sustainable Chemistry and Engineering, 2017, 5, (11), pp. 9630-9633
Issue Date:: 2017-11-06

Closed Access

	Filename	Description	Size
	acssuschemeng.7b02605.pdf		707.65 kB	Adobe PDF	View/Open

Copyright Clearance Process

Recently Added
In Progress
Closed Access

This item is closed access and not available.

Full metadata record

Field	Value	Language
dc.contributor.author	Wang, Q https://orcid.org/0000-0002-5744-2331
dc.date.accessioned	2022-08-19T04:56:14Z
dc.date.available	2022-08-19T04:56:14Z
dc.date.issued	2017-11-06
dc.identifier.citation	ACS Sustainable Chemistry and Engineering, 2017, 5, (11), pp. 9630-9633
dc.identifier.issn	2168-0485
dc.identifier.issn	2168-0485
dc.identifier.uri	http://hdl.handle.net/10453/160518
dc.description.abstract	This letter proposes an innovative roadmap for achieving energy-positive sewage treatment based on sludge treatment using free ammonia (FA, i.e., NH3). This FA technology is able to enhance anaerobic energy recovery in the form of methane via pretreatment of primary sludge and/or secondary sludge. It can also achieve stable mainstream nitrogen removal via nitrite instead of nitrate, thereby increasing organics availability for energy recovery. Energy evaluation suggests that the FA technology could transform sewage treatment plants from energy consumers (energy consumption at 0.27 kWh/m3 sewage treated) to energy exporters (energy export at 0.14 kWh/m3 sewage treated). Economic and environmental evaluations indicate that the FA technology would reduce sewage treatment cost and CO2 emission by $0.056/m3 sewage treated and 0.40 kg CO2/m3 sewage treated, respectively. This FA technology is a sustainable and closed-loop technology, which requires negligible chemical/energy input with FA being a byproduct of sewage treatment. It is also easy to implement in any existing and new sewage treatment plants by adding a simple sludge mixing tank.
dc.language	English
dc.publisher	American Chemical Society
dc.relation	http://purl.org/au-research/grants/arc/DP170102812
dc.relation	http://purl.org/au-research/grants/arc/DE160100667
dc.relation.ispartof	ACS Sustainable Chemistry and Engineering
dc.relation.isbasedon	10.1021/acssuschemeng.7b02605
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	0301 Analytical Chemistry, 0502 Environmental Science and Management, 0904 Chemical Engineering
dc.title	A Roadmap for Achieving Energy-Positive Sewage Treatment Based on Sludge Treatment Using Free Ammonia
dc.type	Journal Article
utslib.citation.volume	5
utslib.for	0301 Analytical Chemistry
utslib.for	0502 Environmental Science and Management
utslib.for	0904 Chemical Engineering
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.consider-herdc	false
dc.date.updated	2022-08-19T04:56:13Z
pubs.issue	11
pubs.publication-status	Published
pubs.volume	5
utslib.citation.issue	11

Abstract:

This letter proposes an innovative roadmap for achieving energy-positive sewage treatment based on sludge treatment using free ammonia (FA, i.e., NH3). This FA technology is able to enhance anaerobic energy recovery in the form of methane via pretreatment of primary sludge and/or secondary sludge. It can also achieve stable mainstream nitrogen removal via nitrite instead of nitrate, thereby increasing organics availability for energy recovery. Energy evaluation suggests that the FA technology could transform sewage treatment plants from energy consumers (energy consumption at 0.27 kWh/m3 sewage treated) to energy exporters (energy export at 0.14 kWh/m3 sewage treated). Economic and environmental evaluations indicate that the FA technology would reduce sewage treatment cost and CO2 emission by $0.056/m3 sewage treated and 0.40 kg CO2/m3 sewage treated, respectively. This FA technology is a sustainable and closed-loop technology, which requires negligible chemical/energy input with FA being a byproduct of sewage treatment. It is also easy to implement in any existing and new sewage treatment plants by adding a simple sludge mixing tank.

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

http://hdl.handle.net/10453/160518