Is semi-flocculation effective as pretreatment to ultrafiltration in wastewater treatment?

Shon, HK; Vigneswaran, S; Ngo, HH; Ben Aim, R

Is semi-flocculation effective as pretreatment to ultrafiltration in wastewater treatment?

Shon, HK

Vigneswaran, S

Ngo, HH

Ben Aim, R

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Publication Type:: Journal Article
Citation:: Water Research, 2005, 39 (1), pp. 147 - 153
Issue Date:: 2005-01-01

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Field	Value	Language
dc.contributor.author	Shon, HK https://orcid.org/0000-0002-3777-7169	en_US
dc.contributor.author	Vigneswaran, S https://orcid.org/0000-0002-8117-4322	en_US
dc.contributor.author	Ngo, HH https://orcid.org/0000-0002-0296-2866	en_US
dc.contributor.author	Ben Aim, R	en_US
dc.date.available	2004-09-08	en_US
dc.date.issued	2005-01-01	en_US
dc.identifier.citation	Water Research, 2005, 39 (1), pp. 147 - 153	en_US
dc.identifier.issn	0043-1354	en_US
dc.identifier.uri	http://hdl.handle.net/10453/3953
dc.description.abstract	In this study, ferric chloride (FeCl3) flocculation was used as a pretreatment to ultrafiltration (UF) in treating synthetic wastewater containing synthetic organic matter (SOM). The effect of flocculant dose was studied in terms of organic removal and membrane flux decline. The UF with optimum dose of FeCl3 (68 mg L-1) did not experience any flux decline during the whole operation of 6 h. The preflocculation with a smaller dose of 20 mg L-1 of FeCl3 led to a severe flux decline in the UF (more than 65% in 6 h). To understand the phenomenon of the flux decline of UF, the MW ranges of SOM removed by different doses of FeCl 3 and by the post treatment of UF were studied. Flocculation with at least 50 mg L-1 of FeCl3 dose was found to be necessary to avoid any significant flux decline and to obtain superior DOC removal. © 2004 Elsevier Ltd. All rights reserved.	en_US
dc.relation.ispartof	Water Research	en_US
dc.relation.isbasedon	10.1016/j.watres.2004.09.003	en_US
dc.subject.classification	Environmental Engineering	en_US
dc.subject.mesh	Chlorides	en_US
dc.subject.mesh	Carbon	en_US
dc.subject.mesh	Ferric Compounds	en_US
dc.subject.mesh	Ultrafiltration	en_US
dc.subject.mesh	Waste Disposal, Fluid	en_US
dc.subject.mesh	Molecular Weight	en_US
dc.subject.mesh	Flocculation	en_US
dc.title	Is semi-flocculation effective as pretreatment to ultrafiltration in wastewater treatment?	en_US
dc.type	Journal Article
utslib.citation.volume	1	en_US
utslib.citation.volume	39	en_US
utslib.for	0599 Other Environmental Sciences	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	open_access
pubs.issue	1	en_US
pubs.publication-status	Published	en_US
pubs.volume	39	en_US

Abstract:

In this study, ferric chloride (FeCl3) flocculation was used as a pretreatment to ultrafiltration (UF) in treating synthetic wastewater containing synthetic organic matter (SOM). The effect of flocculant dose was studied in terms of organic removal and membrane flux decline. The UF with optimum dose of FeCl3 (68 mg L-1) did not experience any flux decline during the whole operation of 6 h. The preflocculation with a smaller dose of 20 mg L-1 of FeCl3 led to a severe flux decline in the UF (more than 65% in 6 h). To understand the phenomenon of the flux decline of UF, the MW ranges of SOM removed by different doses of FeCl 3 and by the post treatment of UF were studied. Flocculation with at least 50 mg L-1 of FeCl3 dose was found to be necessary to avoid any significant flux decline and to obtain superior DOC removal. © 2004 Elsevier Ltd. All rights reserved.

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http://hdl.handle.net/10453/3953