Improving dewaterability of anaerobically digested sludge by combination of persulfate and zero valent iron

Song, K; Zhou, X; Liu, Y; Xie, GJ; Wang, D; Zhang, T; Liu, C; Liu, P; Zhou, B; Wang, Q

Improving dewaterability of anaerobically digested sludge by combination of persulfate and zero valent iron

Song, K Zhou, X Liu, Y Xie, GJ Wang, D Zhang, T Liu, C Liu, P Zhou, B Wang, Q

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Publisher:: ELSEVIER SCIENCE SA
Publication Type:: Journal Article
Citation:: Chemical Engineering Journal, 2016, 295, pp. 436-442
Issue Date:: 2016-07-01

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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	Xie, GJ
dc.contributor.author	Wang, D
dc.contributor.author	Zhang, T
dc.contributor.author	Liu, C
dc.contributor.author	Liu, P
dc.contributor.author	Zhou, B
dc.contributor.author	Wang, Q https://orcid.org/0000-0002-5744-2331
dc.date.accessioned	2022-08-02T22:49:27Z
dc.date.available	2022-08-02T22:49:27Z
dc.date.issued	2016-07-01
dc.identifier.citation	Chemical Engineering Journal, 2016, 295, pp. 436-442
dc.identifier.issn	1385-8947
dc.identifier.issn	1873-3212
dc.identifier.uri	http://hdl.handle.net/10453/159513
dc.description.abstract	Biological wastewater treatment process generates large amounts of sludge, the treatment and disposal of which incur substantial costs. Enhancement of sludge dewaterability is of great importance for decreasing the sludge disposal cost in a wastewater treatment plant (WWTP). This study proposes an innovative conditioning approach to improve the dewaterability of the anaerobically digested sludge (ADS) collected from a full-scale WWTP for the first time. The ADS dewaterability was significantly improved in the presence of persulfate (0-1.0 g/g TS; TS: total solids) and zero valent iron (ZVI) (0-4.0 g/g TS) at neutral pH. The largest improvement of ADS dewaterability was obtained at 2.0 g ZVI/g TS and 0.5 g persulfate/g TS, under which the capillary suction time (an indicator of sludge dewaterability) was decreased by approximately 90%. Compared with the traditional Fenton process (Fe2+ + H2O2 at pH 2.0), economic analysis indicated that the ZVI-persulfate conditioning process is more economically attractive for enhancing ADS dewaterability.
dc.language	English
dc.publisher	ELSEVIER SCIENCE SA
dc.relation	http://purl.org/au-research/grants/arc/DE160100667
dc.relation.ispartof	Chemical Engineering Journal
dc.relation.isbasedon	10.1016/j.cej.2016.03.064
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	0904 Chemical Engineering, 0905 Civil Engineering, 0907 Environmental Engineering
dc.subject.classification	Chemical Engineering
dc.title	Improving dewaterability of anaerobically digested sludge by combination of persulfate and zero valent iron
dc.type	Journal Article
utslib.citation.volume	295
utslib.for	0904 Chemical Engineering
utslib.for	0905 Civil Engineering
utslib.for	0907 Environmental 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	*
dc.date.updated	2022-08-02T22:49:26Z
pubs.publication-status	Published
pubs.volume	295

Abstract:

Biological wastewater treatment process generates large amounts of sludge, the treatment and disposal of which incur substantial costs. Enhancement of sludge dewaterability is of great importance for decreasing the sludge disposal cost in a wastewater treatment plant (WWTP). This study proposes an innovative conditioning approach to improve the dewaterability of the anaerobically digested sludge (ADS) collected from a full-scale WWTP for the first time. The ADS dewaterability was significantly improved in the presence of persulfate (0-1.0 g/g TS; TS: total solids) and zero valent iron (ZVI) (0-4.0 g/g TS) at neutral pH. The largest improvement of ADS dewaterability was obtained at 2.0 g ZVI/g TS and 0.5 g persulfate/g TS, under which the capillary suction time (an indicator of sludge dewaterability) was decreased by approximately 90%. Compared with the traditional Fenton process (Fe2+ + H2O2 at pH 2.0), economic analysis indicated that the ZVI-persulfate conditioning process is more economically attractive for enhancing ADS dewaterability.

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http://hdl.handle.net/10453/159513