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Membranes 2016, 6(3), 38; doi:10.3390/membranes6030038

Impact of PAC Fines in Fouling of Polymeric and Ceramic Low-Pressure Membranes for Drinking Water Treatment

1
NSERC-Industrial Chair in Drinking Water Treatment, Department of Civil, Geological and Mining Engineering, Polytechnique Montréal, P.O. Box 6079, Succursale Centre-Ville, Montréal, QC H3C 3A7, Canada
2
Department of Civil Engineering, The University of British Columbia, 6250 Applied Science Lane, Vancouver, BC V6T 1Z4, Canada
*
Author to whom correspondence should be addressed.
Academic Editor: Marco Stoller
Received: 27 May 2016 / Revised: 28 June 2016 / Accepted: 30 June 2016 / Published: 7 July 2016
(This article belongs to the Special Issue Membranes and Water Treatment 2016)
View Full-Text   |   Download PDF [2454 KB, uploaded 7 July 2016]   |  

Abstract

This study assessed the issue of membrane fouling in a Hybrid Membrane Process (HMP) due to the export of powdered activated carbon (PAC) fines from a pretreatment contactor. Two parallel pilot-scale ceramic and polymeric membranes were studied. Reversible and irreversible foulings were measured following three cleaning procedures: Physical backwashing (BW), chemically enhanced backwashing (CEB) and Clean-in-Place (CIP). The impacts on fouling of membrane type, operation flux increase and the presence/absence of the PAC pretreatment were investigated. Membranes without pretreatment were operated in parallel as a control. In addition, CIP washwaters samples were analyzed to measure organic and inorganic foulants removed from the membranes. It was observed that for the polymeric membranes, fouling generally increased with the presence of the PAC pretreatment because of the export of fines. On the contrary, the ceramic membranes were not significantly impacted by their presence. The analysis of CIP washwaters showed a greater total organic carbon (TOC) content on membranes with a PAC pretreatment while no similar conclusion could be made for inorganic foulants. View Full-Text
Keywords: ceramic membrane; hybrid membrane process; low-pressure membrane; membrane fouling; powdered activated carbon ceramic membrane; hybrid membrane process; low-pressure membrane; membrane fouling; powdered activated carbon
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MDPI and ACS Style

Oligny, L.; Bérubé, P.R.; Barbeau, B. Impact of PAC Fines in Fouling of Polymeric and Ceramic Low-Pressure Membranes for Drinking Water Treatment. Membranes 2016, 6, 38.

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