A comparative study on in-line flocculation and spiral flocculation followed by media filtration as a pre-treatment of seawater

Shrestha, A; Johir, MAH; Vigneswaran, S; Kandasamy, J

A comparative study on in-line flocculation and spiral flocculation followed by media filtration as a pre-treatment of seawater

Shrestha, A Johir, MAH Vigneswaran, S

Kandasamy, J

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Publisher:: Taylor & Francis
Publication Type:: Journal Article
Citation:: Desalination and Water Treatment, 2015, 55, (4), pp. 892-900
Issue Date:: 2015-01-01

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Field	Value	Language
dc.contributor.author	Shrestha, A
dc.contributor.author	Johir, MAH
dc.contributor.author	Vigneswaran, S https://orcid.org/0000-0002-8117-4322
dc.contributor.author	Kandasamy, J https://orcid.org/0000-0003-0160-3519
dc.date.accessioned	2025-01-15T04:14:59Z
dc.date.available	2025-01-15T04:14:59Z
dc.date.issued	2015-01-01
dc.identifier.citation	Desalination and Water Treatment, 2015, 55, (4), pp. 892-900
dc.identifier.issn	1944-3986
dc.identifier.issn	1944-3986
dc.identifier.uri	http://hdl.handle.net/10453/183600
dc.description.abstract	© 2014 Balaban Desalination Publications. All rights reserved. Abstract: In this study the efficiency of two different flocculation systems namely in-line flocculation and spiral flocculation followed by media filtration (sand or anthracite) have been investigated as a pre-treatment of seawater to reverse osmosis. The performances of these filtration systems were assessed in terms of turbidity removal, head loss development, ultra filter-modified fouling index (UF-MFI) and organic matters removal. Both systems showed 60–70% removal of turbidity. In-line flocculation and filtration showed 2–3 times higher head loss development than spiral flocculation filtration. These filtration systems helped to reduce the fouling potential (in terms of UF-MFI) by 50–73%, whereas dissolved organic carbon-removal efficiency was 30–45%. The fractionation of organic matter showed that both systems removed 70% of hydrophobic organic matters. The removals of hydrophilic organics were around 30–40%. Among the hydrophilic compounds, the removal of biopolymer and lower molecular weight neutrals and acid were higher than that of humic substances’ and building blocks’.
dc.language	English
dc.publisher	Taylor & Francis
dc.relation.ispartof	Desalination and Water Treatment
dc.relation.isbasedon	10.1080/19443994.2014.922496
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	0904 Chemical Engineering, 0905 Civil Engineering, 0907 Environmental Engineering
dc.subject.classification	4004 Chemical engineering
dc.subject.classification	4005 Civil engineering
dc.subject.classification	4011 Environmental engineering
dc.title	A comparative study on in-line flocculation and spiral flocculation followed by media filtration as a pre-treatment of seawater
dc.type	Journal Article
utslib.citation.volume	55
utslib.for	0904 Chemical Engineering
utslib.for	0905 Civil Engineering
utslib.for	0907 Environmental Engineering
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/UTS Groups
pubs.organisational-group	University of Technology Sydney/UTS Groups/Centre for Technology in Water and Wastewater (CTWW)
utslib.copyright.status	closed_access	*
pubs.consider-herdc	true
dc.date.updated	2025-01-15T04:14:58Z
pubs.issue	4
pubs.publication-status	Published
pubs.volume	55
utslib.citation.issue	4

Abstract:

© 2014 Balaban Desalination Publications. All rights reserved. Abstract: In this study the efficiency of two different flocculation systems namely in-line flocculation and spiral flocculation followed by media filtration (sand or anthracite) have been investigated as a pre-treatment of seawater to reverse osmosis. The performances of these filtration systems were assessed in terms of turbidity removal, head loss development, ultra filter-modified fouling index (UF-MFI) and organic matters removal. Both systems showed 60–70% removal of turbidity. In-line flocculation and filtration showed 2–3 times higher head loss development than spiral flocculation filtration. These filtration systems helped to reduce the fouling potential (in terms of UF-MFI) by 50–73%, whereas dissolved organic carbon-removal efficiency was 30–45%. The fractionation of organic matter showed that both systems removed 70% of hydrophobic organic matters. The removals of hydrophilic organics were around 30–40%. Among the hydrophilic compounds, the removal of biopolymer and lower molecular weight neutrals and acid were higher than that of humic substances’ and building blocks’.

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http://hdl.handle.net/10453/183600