Characterization and removal of disinfection by-product precursors by resins - Literature review and pilot tests
Résumé
This work provides the key results of a literature review assessing the resin fractionation processes to study the disinfection by-products precursors. A practical case is also presented. Fluidized bed column experiments have been performed to assess the efficiency of 4 ion exchange resins in terms of DBP precursor removal. DOC removal, including the different fractions determined by size exclusion chromatography-carbon detector, 10 THMs and 7 HAAs have been measured and compared. IEX resins lowering iodide and specific precursors showed a high capacity in lowering the formation of I-THMs. However, additional experiments with increasing halide concentrations showed the limitations of IEX process to limit the DBP formation.
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