这项研究是在休斯顿市处理休斯顿湖水的水处理厂的过滤水（消毒后）上进行的。休斯顿湖包含城市和农村径流，总有机碳（TOC）为4至8 mg/L。为了调查使用离子交换树脂控制三卤甲烷（THM）的情况，比较了研究中不同塔系统进水中各有机组分（大于10K、5-10K、1-5K、0.5-1K和小于0.5K AMW）的三卤甲烷生成潜力（THMFPs）。本研究的具体目标是确定:1）天然有机碳的各种分子量组分的氯反应性，2）THM前体在各种有机组分中的突破模式，以及3）再生和再循环再生剂对离子交换树脂性能的影响。

This study was conducted on filtered water (prior to post- disinfection) at the water treatment plant in the City of Houston that treats Lake Houston water. Lake Houston contains both urban and rural runoff and has a total organic carbon (TOC) of 4 to 8 mg/L. For the purpose of investigating the control of trihalomethanes (THMs) using ion exchange resins, trihalomethane formation potentials (THMFPs) of each organic fraction (greater than 10K, 5-10K, 1-5K, 0.5-1K and less than 0.5K AMW) in the influent to the various column systems under study were compared. The specific objectives of this study were to determine: 1) the chlorine reactivity of the various molecular weight fractions of natural organic carbon, 2) the breakthrough pattern of THM precursors in various organic fractions, and 3) the impact of regeneration and recycling regenerant on ion exchange resin performance.