Experimental investigation of adsorption-flocculation-microfiltration hybrid system in wastewater reuse

Guo, WS; Vigneswaran, S; Ngo, HH; Chapman, H

Experimental investigation of adsorption-flocculation-microfiltration hybrid system in wastewater reuse

Guo, WS

Vigneswaran, S

Ngo, HH

Chapman, H

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Publication Type:: Journal Article
Citation:: Journal of Membrane Science, 2004, 242 (1-2), pp. 27 - 35
Issue Date:: 2004-10-15

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Field	Value	Language
dc.contributor.author	Guo, WS https://orcid.org/0000-0001-5542-2858	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	Chapman, H	en_US
dc.date.issued	2004-10-15	en_US
dc.identifier.citation	Journal of Membrane Science, 2004, 242 (1-2), pp. 27 - 35	en_US
dc.identifier.issn	0376-7388	en_US
dc.identifier.uri	http://hdl.handle.net/10453/5828
dc.description.abstract	Membrane hybrid systems are becoming increasingly important as cost effective solutions in wastewater treatment and reuse. The effect of pretreatments namely floating medium flocculation (FMF) and powdered activated carbon (PAC) adsorption on organic and phosphorus removal was studied. The FMF was found to increase the phosphorus removal up to 97%. This preflocculation improved the dissolved organic removal only marginally (from 20% to 40%) whilst the pretreatment of adsorption increased the organic removal to more than 98%. The decline in filtration (permeate) flux of microfiltration was reduced by the incorporation of these pretreatment methods. Detailed studies on the effect of PAC dose indicated that a PAC dose of 1 g/L was the optimum in terms of organic removal and filtration flux. PAC doses in excess of 1 g/L contributed to a significant decrease in filtration flux. The critical flux was experimentally evaluated for crossflow microfiltration (CFMF) with and without the pretreatment. The pretreatment of adsorption led to six times higher critical flux than that without any pretreatment. The preflocculation alone did not significantly increase the critical flux. There was only a 33% increase with preflocculation. However, the preflocculation combined with PAC adsorption resulted in nine times higher critical flux. The results showed that a pretreatment of flocculation and adsorption led to almost complete phosphorus and organic removal while reducing the membrane clogging. © 2004 Elsevier B.V. All rights reserved.	en_US
dc.relation	http://purl.org/au-research/grants/arc/C10010001
dc.relation.ispartof	Journal of Membrane Science	en_US
dc.relation.isbasedon	10.1016/j.memsci.2003.06.006	en_US
dc.subject.classification	Chemical Engineering	en_US
dc.title	Experimental investigation of adsorption-flocculation-microfiltration hybrid system in wastewater reuse	en_US
dc.type	Journal Article
utslib.citation.volume	1-2	en_US
utslib.citation.volume	242	en_US
utslib.for	090407 Process Control and Simulation	en_US
utslib.for	090404 Membrane and Separation Technologies	en_US
utslib.for	090409 Wastewater Treatment Processes	en_US
utslib.for	03 Chemical Sciences	en_US
utslib.for	09 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	open_access
pubs.issue	1-2	en_US
pubs.publication-status	Published	en_US
pubs.volume	242	en_US

Abstract:

Membrane hybrid systems are becoming increasingly important as cost effective solutions in wastewater treatment and reuse. The effect of pretreatments namely floating medium flocculation (FMF) and powdered activated carbon (PAC) adsorption on organic and phosphorus removal was studied. The FMF was found to increase the phosphorus removal up to 97%. This preflocculation improved the dissolved organic removal only marginally (from 20% to 40%) whilst the pretreatment of adsorption increased the organic removal to more than 98%. The decline in filtration (permeate) flux of microfiltration was reduced by the incorporation of these pretreatment methods. Detailed studies on the effect of PAC dose indicated that a PAC dose of 1 g/L was the optimum in terms of organic removal and filtration flux. PAC doses in excess of 1 g/L contributed to a significant decrease in filtration flux. The critical flux was experimentally evaluated for crossflow microfiltration (CFMF) with and without the pretreatment. The pretreatment of adsorption led to six times higher critical flux than that without any pretreatment. The preflocculation alone did not significantly increase the critical flux. There was only a 33% increase with preflocculation. However, the preflocculation combined with PAC adsorption resulted in nine times higher critical flux. The results showed that a pretreatment of flocculation and adsorption led to almost complete phosphorus and organic removal while reducing the membrane clogging. © 2004 Elsevier B.V. All rights reserved.

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http://hdl.handle.net/10453/5828