The removal of dissolved organic carbon (DOC) is a key factor in the control of disinfection by-product (DBP) formation in drinking water. Ion exchange process deals with the removal of naturally negatively charged organic matter. A fluidized bed column test has been chosen to test in parallel the efficiency of 4 different anionic exchange resins (Purolite PPA860S, Dowex TAN-1, Amberlite IRA-958 and IRA-410) in terms of DOC fraction removal and related DBP formation reduction. IRA-410 was shown to be the best performing resin in terms of DOC and DBP formation potential reduction followed by PPA860S. These resins removed respectively 41 and 37% of DOC, with humic substances as the main target of the two resins (68 and 72% reduction, respectively, based on size exclusion chromatography with an organic carbon detector). The UV absorbance was reduced in a higher proportion than the DOC demonstrating a preference of the resins for the relatively hydrophobic compounds. The reduction in trihalomethane and haloacetic acid formation was higher than the DOC removal for IRA-410 and PPA860S (53 and 59%, respectively); whereas IRA-958 on the other hand showed a lower reduction in DBP formation potential than its DOC removal. All the resins showed a much higher reduction of iodinated trihalomethanes formation potential (66 to 96% reduction compared to raw water) due to the removals of iodide in addition of organic precursors. However, in a context of increasing halide concentrations, the different resins showed a reduction of their efficiency to control the formation of DBPs.

溶解有机碳（DOC）的去除是控制饮用水中消毒副产物（DBP）形成的关键因素。离子交换过程涉及去除天然带负电的有机物。选择了流化床柱测试来并行测试4种不同的阴离子交换树脂（Purolite PPA860S，Dowex TAN-1，Amberlite IRA-958和IRA-410）在DOC去除率和相关DBP形成减少方面的效率。就减少DOC和DBP形成潜力而言，IRA-410被证明是性能最好的树脂，其次是PPA860S。这些树脂分别去除了41％和37％的DOC，其中腐殖质是这两种树脂的主要目标（基于使用有机碳检测器的尺寸排阻色谱法，分别减少了68％和72％）。与DOC相比，UV吸收率降低的比例更高，这表明树脂更偏爱相对疏水的化合物。三卤代甲烷和卤代乙酸形成的减少高于IRA-410和PPA860S的DOC去除（分别为53％和59％）；相反，IRA-958的DBP形成潜力降低幅度要比其DOC去除幅度低。由于除有机前体外还除去了碘化物，所有树脂均显示出更高的碘化三卤甲烷生成潜力的降低（与原水相比降低了66％至96％）。但是，在卤化物浓度增加的情况下，不同的树脂显示出控制DBP形成的效率降低。