Chapter 8

Ion Exchange

Mika Sillanpää,  and Irina Levchuk     Lappeenranta University of Technology, LUT Faculty of Technology, LUT Chemtech, Laboratory of Green Chemistry, Sammonkatu 12, 50130 Mikkeli, Finland


The presence of natural organic matter (NOM) in drinking water causes difficulties during conventional water treatment processes such as coagulation. Also, problems arise when alternative treatment techniques for NOM removal, such as nanofiltration (NF), are applied. The most common problem with NF is membrane fouling. Ion exchange (IE) processes proved to be an efficient NOM removal technology, and are recommended for use at the beginning of the treatment process. This approach not only significantly decreases the concentration of ...

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