Enhancing post anaerobic digestion of full-scale anaerobically digested sludge using free nitrous acid treatment.

Zhang, T; Wang, Q; Ye, L; Yuan, Z

Enhancing post anaerobic digestion of full-scale anaerobically digested sludge using free nitrous acid treatment.

Zhang, T Wang, Q

Ye, L Yuan, Z

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Publisher:: SPRINGER HEIDELBERG
Publication Type:: Journal Article
Citation:: J Ind Microbiol Biotechnol, 2016, 43, (5), pp. 713-717
Issue Date:: 2016-05

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Field	Value	Language
dc.contributor.author	Zhang, T
dc.contributor.author	Wang, Q https://orcid.org/0000-0002-5744-2331
dc.contributor.author	Ye, L
dc.contributor.author	Yuan, Z
dc.date.accessioned	2022-08-02T22:57:24Z
dc.date.available	2016-01-26
dc.date.available	2022-08-02T22:57:24Z
dc.date.issued	2016-05
dc.identifier.citation	J Ind Microbiol Biotechnol, 2016, 43, (5), pp. 713-717
dc.identifier.issn	1367-5435
dc.identifier.issn	1476-5535
dc.identifier.uri	http://hdl.handle.net/10453/159515
dc.description.abstract	In some wastewater treatment plants (WWTPs), the ever increasing production of sludge with the expanding population overloaded the anaerobic digestion which compromises the sludge reduction efficiency. Post anaerobic digestion of anaerobically digested sludge (ADS) has been applied to enhance sludge reduction, however, to a very limited extent. This study verified the effectiveness of free nitrous acid (FNA i.e. HNO2) pre-treatment on enhancing full-scale ADS degradation in post anaerobic digestion. The ADS collected from a full-scale WWTP was subject to FNA treatment at concentrations of 0.77, 1.54, 2.31, 3.08, and 3.85 mg N/L for 24 h followed by biochemical methane potential tests. The FNA treatment at all concentrations resulted in an increase (from 1.5-3.1 % compared to the control) in sludge reduction with the highest improvement achieved at 0.77 mg HNO2-N/L. The FNA treatment at this concentration also resulted in the highest increase in methane production (40 %) compared to the control. The economic analysis indicates that FNA treatment is economically attractive for enhancing post anaerobic digestion of full-scale ADS.
dc.format	Print-Electronic
dc.language	eng
dc.publisher	SPRINGER HEIDELBERG
dc.relation.ispartof	J Ind Microbiol Biotechnol
dc.relation.isbasedon	10.1007/s10295-016-1742-x
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	0601 Biochemistry and Cell Biology, 0908 Food Sciences, 1003 Industrial Biotechnology
dc.subject.classification	Biotechnology
dc.subject.mesh	Anaerobiosis
dc.subject.mesh	Bioreactors
dc.subject.mesh	Methane
dc.subject.mesh	Nitrous Acid
dc.subject.mesh	Sewage
dc.subject.mesh	Waste Water
dc.subject.mesh	Nitrous Acid
dc.subject.mesh	Methane
dc.subject.mesh	Bioreactors
dc.subject.mesh	Sewage
dc.subject.mesh	Anaerobiosis
dc.subject.mesh	Waste Water
dc.title	Enhancing post anaerobic digestion of full-scale anaerobically digested sludge using free nitrous acid treatment.
dc.type	Journal Article
utslib.citation.volume	43
utslib.location.activity	Germany
utslib.for	0601 Biochemistry and Cell Biology
utslib.for	0908 Food Sciences
utslib.for	1003 Industrial Biotechnology
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	*
dc.date.updated	2022-08-02T22:57:23Z
pubs.issue	5
pubs.publication-status	Published
pubs.volume	43
utslib.citation.issue	5

Abstract:

In some wastewater treatment plants (WWTPs), the ever increasing production of sludge with the expanding population overloaded the anaerobic digestion which compromises the sludge reduction efficiency. Post anaerobic digestion of anaerobically digested sludge (ADS) has been applied to enhance sludge reduction, however, to a very limited extent. This study verified the effectiveness of free nitrous acid (FNA i.e. HNO2) pre-treatment on enhancing full-scale ADS degradation in post anaerobic digestion. The ADS collected from a full-scale WWTP was subject to FNA treatment at concentrations of 0.77, 1.54, 2.31, 3.08, and 3.85 mg N/L for 24 h followed by biochemical methane potential tests. The FNA treatment at all concentrations resulted in an increase (from 1.5-3.1 % compared to the control) in sludge reduction with the highest improvement achieved at 0.77 mg HNO2-N/L. The FNA treatment at this concentration also resulted in the highest increase in methane production (40 %) compared to the control. The economic analysis indicates that FNA treatment is economically attractive for enhancing post anaerobic digestion of full-scale ADS.

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http://hdl.handle.net/10453/159515