Role of oxidants in enhancing dewaterability of anaerobically digested sludge through Fe (II) activated oxidation processes: hydrogen peroxide versus persulfate.

Song, K; Zhou, X; Liu, Y; Gong, Y; Zhou, B; Wang, D; Wang, Q

Role of oxidants in enhancing dewaterability of anaerobically digested sludge through Fe (II) activated oxidation processes: hydrogen peroxide versus persulfate.

Song, K Zhou, X Liu, Y Gong, Y Zhou, B Wang, D Wang, Q

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Publisher:: NATURE PUBLISHING GROUP
Publication Type:: Journal Article
Citation:: Sci Rep, 2016, 6, (1), pp. 24800
Issue Date:: 2016-04-25

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Field	Value	Language
dc.contributor.author	Song, K
dc.contributor.author	Zhou, X
dc.contributor.author	Liu, Y
dc.contributor.author	Gong, Y
dc.contributor.author	Zhou, B
dc.contributor.author	Wang, D
dc.contributor.author	Wang, Q https://orcid.org/0000-0002-5744-2331
dc.date.accessioned	2022-08-03T03:20:03Z
dc.date.available	2016-04-04
dc.date.available	2022-08-03T03:20:03Z
dc.date.issued	2016-04-25
dc.identifier.citation	Sci Rep, 2016, 6, (1), pp. 24800
dc.identifier.issn	2045-2322
dc.identifier.issn	2045-2322
dc.identifier.uri	http://hdl.handle.net/10453/159533
dc.description.abstract	Improving dewaterability of sludge is important for the disposal of sludge in wastewater treatment plants (WWTPs). This study, for the first time, investigated the Fe(II) activated oxidization processes in improving anaerobically digested sludge (ADS) dewaterability. The combination of Fe(II) (0-100 mg/g total solids (TS)) and persulfate (0-1,000 mg/g TS) under neutral pH as well as the combination of Fe(II) (0-100 mg/g TS) and hydrogen peroxide (HP) (0-1,000 mg/g TS) under pH 3.0 were used to examine and compare their effect on the ADS dewaterability enhancement. The highest ADS dewaterability enhancement was attained at 25 mg Fe(II)/g TS and 50 mg HP/g TS, when the CST (CST: the capillary suction time, a sludge dewaterability indicator) was reduced by 95%. In contrast, the highest CST reduction in Fe(II)-persulfate conditioning was 90%, which was obtained at 50 mg Fe(II)/g TS and 250 mg persulfate/g TS. The results showed that Fe(II)-HP conditioning was comparable with Fe(II)-persulfate conditioning in terms of highest CST reduction. Economic analysis suggested that the Fe(II)-HP conditioning was more promising for improving ADS dewaterability compared with Fe(II)-persulfate conditioning, with the saving being up to $65,000 per year in a WWTP with a population equivalent of 100,000.
dc.format	Electronic
dc.language	eng
dc.publisher	NATURE PUBLISHING GROUP
dc.relation	http://purl.org/au-research/grants/arc/DE160100667
dc.relation.ispartof	Sci Rep
dc.relation.isbasedon	10.1038/srep24800
dc.rights	info:eu-repo/semantics/openAccess
dc.subject.mesh	Anaerobiosis
dc.subject.mesh	Bacteria, Anaerobic
dc.subject.mesh	Hydrogen Peroxide
dc.subject.mesh	Hydrogen-Ion Concentration
dc.subject.mesh	Iron
dc.subject.mesh	Oxidants
dc.subject.mesh	Oxidation-Reduction
dc.subject.mesh	Sewage
dc.subject.mesh	Waste Disposal, Fluid
dc.subject.mesh	Waste Water
dc.subject.mesh	Water
dc.subject.mesh	Water Supply
dc.subject.mesh	Bacteria, Anaerobic
dc.subject.mesh	Hydrogen Peroxide
dc.subject.mesh	Iron
dc.subject.mesh	Water
dc.subject.mesh	Oxidants
dc.subject.mesh	Sewage
dc.subject.mesh	Waste Disposal, Fluid
dc.subject.mesh	Water Supply
dc.subject.mesh	Anaerobiosis
dc.subject.mesh	Oxidation-Reduction
dc.subject.mesh	Hydrogen-Ion Concentration
dc.subject.mesh	Waste Water
dc.title	Role of oxidants in enhancing dewaterability of anaerobically digested sludge through Fe (II) activated oxidation processes: hydrogen peroxide versus persulfate.
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	*
dc.date.updated	2022-08-03T03:19:46Z
pubs.issue	1
pubs.publication-status	Published online
pubs.volume	6
utslib.citation.issue	1

Abstract:

Improving dewaterability of sludge is important for the disposal of sludge in wastewater treatment plants (WWTPs). This study, for the first time, investigated the Fe(II) activated oxidization processes in improving anaerobically digested sludge (ADS) dewaterability. The combination of Fe(II) (0-100 mg/g total solids (TS)) and persulfate (0-1,000 mg/g TS) under neutral pH as well as the combination of Fe(II) (0-100 mg/g TS) and hydrogen peroxide (HP) (0-1,000 mg/g TS) under pH 3.0 were used to examine and compare their effect on the ADS dewaterability enhancement. The highest ADS dewaterability enhancement was attained at 25 mg Fe(II)/g TS and 50 mg HP/g TS, when the CST (CST: the capillary suction time, a sludge dewaterability indicator) was reduced by 95%. In contrast, the highest CST reduction in Fe(II)-persulfate conditioning was 90%, which was obtained at 50 mg Fe(II)/g TS and 250 mg persulfate/g TS. The results showed that Fe(II)-HP conditioning was comparable with Fe(II)-persulfate conditioning in terms of highest CST reduction. Economic analysis suggested that the Fe(II)-HP conditioning was more promising for improving ADS dewaterability compared with Fe(II)-persulfate conditioning, with the saving being up to $65,000 per year in a WWTP with a population equivalent of 100,000.

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http://hdl.handle.net/10453/159533