Effect of a hydrodynamic cleaning of a cross-flow membrane system with a novel automated approach

Shon, HK; Smith, PJ; Vigneswaran, S; Ngo, HH

Effect of a hydrodynamic cleaning of a cross-flow membrane system with a novel automated approach

Shon, HK

Smith, PJ Vigneswaran, S

Ngo, HH

Permalink

Publication Type:: Journal Article
Citation:: Desalination, 2007, 202 (1-3), pp. 351 - 360
Issue Date:: 2007-01-05

Closed Access

	Filename	Description	Size
	2006012403.pdf		248.73 kB	Adobe PDF	View/Open

Copyright Clearance Process

Recently Added
In Progress
Closed Access

This item is closed access and not available.

Full metadata record

Field	Value	Language
dc.contributor.author	Shon, HK https://orcid.org/0000-0002-3777-7169	en_US
dc.contributor.author	Smith, PJ	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.date.issued	2007-01-05	en_US
dc.identifier.citation	Desalination, 2007, 202 (1-3), pp. 351 - 360	en_US
dc.identifier.issn	0011-9164	en_US
dc.identifier.uri	http://hdl.handle.net/10453/4178
dc.description.abstract	The effect of different hydraulic cleaning methods was investigated in terms of flux decline and resistance using the cross-flow UF unit. The use of varied production intervals, varied ratios of periodic relaxation and the use of a periodic high-rate crossflow were investigated. This cleaning method of relaxation followed by high-rate crossflow mainly removed the resistances of the concentration polarization and gel layer compared with weak adsorption resistance. The cleaning protocol utilizing a periodic relaxation step and/or a periodic increased cross-flow rate at a decreased pressure can lead to productivity improvements and an increase in the operational lifetime of the membrane. If the optimal frequency and duration of the cleaning step (1 h production-60 s relaxation-60 s crossflow) is used, a net productivity increase of 14.8% is achievable and a significant extension to the membrane's life results. However, a critical point of different cleaning intervals did exist. Utilizing the optimized periodic cleaning techniques developed in this study allows higher recovery rates for ultrafiltration to be achieved, without the problems of increased flux decline normally experienced when operating with high recovery rates. © 2006.	en_US
dc.relation.ispartof	Desalination	en_US
dc.relation.isbasedon	10.1016/j.desal.2005.12.074	en_US
dc.subject.classification	Chemical Engineering	en_US
dc.title	Effect of a hydrodynamic cleaning of a cross-flow membrane system with a novel automated approach	en_US
dc.type	Journal Article
utslib.citation.volume	1-3	en_US
utslib.citation.volume	202	en_US
utslib.for	0907 Environmental Engineering	en_US
utslib.for	03 Chemical Sciences	en_US
utslib.for	09 Engineering	en_US
dc.location.activity	Casper, WY
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	1-3	en_US
pubs.publication-status	Published	en_US
pubs.volume	202	en_US

Abstract:

The effect of different hydraulic cleaning methods was investigated in terms of flux decline and resistance using the cross-flow UF unit. The use of varied production intervals, varied ratios of periodic relaxation and the use of a periodic high-rate crossflow were investigated. This cleaning method of relaxation followed by high-rate crossflow mainly removed the resistances of the concentration polarization and gel layer compared with weak adsorption resistance. The cleaning protocol utilizing a periodic relaxation step and/or a periodic increased cross-flow rate at a decreased pressure can lead to productivity improvements and an increase in the operational lifetime of the membrane. If the optimal frequency and duration of the cleaning step (1 h production-60 s relaxation-60 s crossflow) is used, a net productivity increase of 14.8% is achievable and a significant extension to the membrane's life results. However, a critical point of different cleaning intervals did exist. Utilizing the optimized periodic cleaning techniques developed in this study allows higher recovery rates for ultrafiltration to be achieved, without the problems of increased flux decline normally experienced when operating with high recovery rates. © 2006.

Please use this identifier to cite or link to this item:

http://hdl.handle.net/10453/4178