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Membrane Water Treatment   Volume 3, Number 4, October 2012, pages 211-219
DOI: https://doi.org/10.12989/mwt.2012.3.4.211
 
Effects of ion-exchange for NOM removal in water treatment with ceramic membranes ultrafiltration
Malgorzata Kabsch-Korbutowicz and Agnieszka Urbanowska

 
Abstract     [Buy Article]
    To enhance the efficiency of water treatment and reduce the extent of membrane fouling, the membrane separation process is frequently preceded by other physico-chemical processes. One of them might be ion exchange. The aim of this work was to compare the efficiency of natural organic matter removal achieved with various anion-exchange resins, and to verify their potential use in water treatment prior to the ultrafiltration process involving a ceramic membrane. The use of ion exchange prior to ceramic membrane ultrafiltration enhanced final water quality. The most effective was MIEX, which removed significant amounts of the VHA, SHA and CHA fractions. Separation of uncharged fractions was poor with all the resins examined. Water pretreatment involving an ion-exchange resin failed to reduce membrane fouling, which was higher than that observed in unpretreated water. This finding is to be attributed to the uncharged NOM fractions and small resin particles that persisted in the water.
 
Key Words
    natural organic matter; ion-exchange resin; pretreatment; ceramic membrane
 
Address
Department of Environment Engineering, Wroclaw University of Technology, Wybrzeze Wyspianskiego 27,
50-370 Wroclaw, Poland
 

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