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

Laurent Oligny, Pierre R. Bérubé and Benoit Barbeau

Article (2016)

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Cite this document: Oligny, L., Bérubé, P. R. & Barbeau, B. (2016). Impact of PAC Fines in Fouling of Polymeric and Ceramic Low-Pressure Membranes for Drinking Water Treatment. Membranes, 6(3). doi:10.3390/membranes6030038
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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.

Uncontrolled Keywords

ceramic membrane; hybrid membrane process; low-pressure membrane; membrane fouling; powdered activated carbon; the design of the study; in the collection, analyses, or interpretation of data; and in the writing of the manuscript.

Open Access document in PolyPublie
Subjects: 1000 Génie civil > 1000 Génie civil
1000 Génie civil > 1007 Ressources et approvisionnement en eau
1500 Génie de l'environnement > 1501 Qualité de l'eau, pollution
Department: Département des génies civil, géologique et des mines
Research Center: Non applicable
Funders: Industrial Chair in Drinking Water Treatment (CRSNG / NSERC), City of Montreal, John Meunier Inc., City of Laval
Date Deposited: 17 Jan 2019 13:53
Last Modified: 18 Jan 2019 01:20
PolyPublie URL: https://publications.polymtl.ca/3611/
Document issued by the official publisher
Journal Title: Membranes (vol. 6, no. 3)
Publisher: MDPI
Official URL: https://doi.org/10.3390/membranes6030038

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