Modified centrifugal technique for determining polymer demand and achievable dry solids content in the dewatering of anaerobically digested sludge

To, VHP; Nguyen, TV; Vigneswaran, S; Duc Nghiem, L; Murthy, S; Bustamante, H; Higgins, M

Modified centrifugal technique for determining polymer demand and achievable dry solids content in the dewatering of anaerobically digested sludge

To, VHP Nguyen, TV Vigneswaran, S

Duc Nghiem, L

Murthy, S Bustamante, H Higgins, M

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Publication Type:: Journal Article
Citation:: Desalination and Water Treatment, 2016, 57 (53), pp. 25509 - 25519
Issue Date:: 2016-11-13

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Field	Value	Language
dc.contributor.author	To, VHP	en_US
dc.contributor.author	Nguyen, TV	en_US
dc.contributor.author	Vigneswaran, S https://orcid.org/0000-0002-8117-4322	en_US
dc.contributor.author	Duc Nghiem, L https://orcid.org/0000-0002-9039-5792	en_US
dc.contributor.author	Murthy, S	en_US
dc.contributor.author	Bustamante, H	en_US
dc.contributor.author	Higgins, M	en_US
dc.date.issued	2016-11-13	en_US
dc.identifier.citation	Desalination and Water Treatment, 2016, 57 (53), pp. 25509 - 25519	en_US
dc.identifier.issn	1944-3994	en_US
dc.identifier.uri	http://hdl.handle.net/10453/43794
dc.description.abstract	© 2016 Balaban Desalination Publications. All rights reserved. This study aims to characterize anaerobically digested sludge (ADS) and correlate the sludge characteristics in terms of soluble organic compounds with polymer demand (PD) during sludge conditioning. The PD required to achieve maximum dewatering of the ADS studied is in the range of 8–10 kg polymer/dry ton. The commonly used capillary suction time parameter to evaluate the solid–liquid separation ability was not a reliable indicator for assessing dewatering. Instead, in this study, a modified centrifugal technique proposed by Higgins (Higgins MCT) was used to assess the maximum achievable dry solids content of the biosolids cake. The Higgins MCT is readily obtained using a bench-scale centrifuge equipped with a modified centrifuge bucket. Using the Higgins MCT, the maximum dry solids contents obtained from conditioned ADS was 30 wt%. These values were comparable to the dry solids content obtained from the same sludge at full-scale level. Our results suggest Higgins MCT is suitable for assessing the final dry solids content and simulating the dewatering process.	en_US
dc.relation.ispartof	Desalination and Water Treatment	en_US
dc.relation.isbasedon	10.1080/19443994.2016.1157524	en_US
dc.title	Modified centrifugal technique for determining polymer demand and achievable dry solids content in the dewatering of anaerobically digested sludge	en_US
dc.type	Journal Article
utslib.citation.volume	53	en_US
utslib.citation.volume	57	en_US
utslib.for	0904 Chemical Engineering	en_US
utslib.for	0905 Civil Engineering	en_US
utslib.for	0907 Environmental Engineering	en_US
pubs.embargo.period	Not known	en_US
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.issue	53	en_US
pubs.publication-status	Published	en_US
pubs.volume	57	en_US

Abstract:

© 2016 Balaban Desalination Publications. All rights reserved. This study aims to characterize anaerobically digested sludge (ADS) and correlate the sludge characteristics in terms of soluble organic compounds with polymer demand (PD) during sludge conditioning. The PD required to achieve maximum dewatering of the ADS studied is in the range of 8–10 kg polymer/dry ton. The commonly used capillary suction time parameter to evaluate the solid–liquid separation ability was not a reliable indicator for assessing dewatering. Instead, in this study, a modified centrifugal technique proposed by Higgins (Higgins MCT) was used to assess the maximum achievable dry solids content of the biosolids cake. The Higgins MCT is readily obtained using a bench-scale centrifuge equipped with a modified centrifuge bucket. Using the Higgins MCT, the maximum dry solids contents obtained from conditioned ADS was 30 wt%. These values were comparable to the dry solids content obtained from the same sludge at full-scale level. Our results suggest Higgins MCT is suitable for assessing the final dry solids content and simulating the dewatering process.

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http://hdl.handle.net/10453/43794