本研究通过比较进水和三柱系统中有机组分的THM生成电位，研究了离子交换对三卤甲烷（THM）的控制。结果表明，最小有机组分<0。5K表观分子量（AMW）与游离有效氯的反应性最强。在离子交换系统中，1-5K-、0.5-1K-、和<0。5-AMW有机馏分产生了大部分THM，而在颗粒活性炭（GAC）和组合离子交换GAC系统中，<0。5-AMW组分产生了大部分THM。作者得出结论，在硫酸盐穿透时，离子交换柱的树脂与GAC柱结合再生，将产生THM生成潜力非常低的水。包括12个参考文献、表格和图表。

This study investigated the control of trihalomethanes (THMs) with ion exchange by comparing the THM formation potentials of the organic fractions in the influent to three column systems. The results showed that the smallest organic fraction, <0.5K apparent molecular weight (AMW), was most reactive with free available chlorine. With the ion exchange system, the 1-5K-, 0.5-1K-, and <0.5-AMW organic fractions produced the majority of THMs, whereas with the granular activated carbon (GAC) and the combined ion exchange-GAC systems, the <0.5-AMW fraction produced most of the THMs. The authors conclude that regeneration of the resin of the ion exchange column at sulfate breakthrough, in combination with a GAC column, will produce a water very low in THM formation potential. Includes 12 references, tables, figures.