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Type: Journal article
Title: The impact of optimised coagulation on membrane fouling for coagulation/ultrafiltration process
Author: Dixon, M.
Staaks, C.
Fabris, R.
Vimonses, V.
Chow, C.W.K.
Panglisch, S.
van Leeuwen, J.A.
Drikas, M.
Citation: Desalination and Water Treatment, 2013; 51(13-15):2718-2725
Publisher: Taylor & Francis
Issue Date: 2013
ISSN: 1944-3994
Statement of
Mike Dixon, Christian Staaks, Rolando Fabris, Vipasiri Vimonses, Christopher W.K. Chow, Stefan Panglisch, John A. van Leeuwen, Mary Drikas
Abstract: This work aimed to demonstrate the effect of optimised coagulation on minimise fouling for coagulation–ultrafiltration process. Coagulation as pretreatment has the potential to mitigate fouling and enhance flux. Operating parameters were tested by a matrix of experiments for various mixing conditions and coagulant doses. In coagulation experiments, varied shear forces were applied to generate different floc characteristics in order to assess the effect on membrane fouling. Floc properties were investigated with an optical monitoring technique to identify structure, size and growth of flocs. It was shown that stronger flocs are of advantage for fouling mitigation and that the coagulant dosage is crucial for the performance of filtration. The impact of water quality was assessed using general water quality parameters and organic characterisation techniques to investigate the performance of each treatment step. The treatment efficiency was further assessed based on comparing the molecular size fractions of the organic matter before and after coagulation using a size exclusion chromatography technique. The result confirmed the significance of organic character on treatment performance.
Keywords: Coagulation
Natural organic matter
Photometric dispersion analyser
Rights: © 2012 Desalination Publications. All rights reserved.
DOI: 10.1080/19443994.2012.749367
Appears in Collections:Aurora harvest 3
Chemical Engineering publications

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