本研究旨在探讨强化混凝去除卤化消毒副产物（DBPs）有机前体的能力。环境保护局（EPA）目前监管一种DBP，即三卤甲烷（氯仿、二氯溴甲烷、二溴氯甲烷和溴仿）。目前，总三卤甲烷（TTHMs）的最大污染物水平（MCL）为0.10 mg/L。拟议的消毒剂和消毒副产品（D-DBP）规则的第一阶段旨在将TTHMs的MCL降至0.080 mg/L，并将总卤乙酸（THAAs）的MCL设定为0.060 mg/L。拟议的信息收集规则将要求公用事业公司收集并向环境保护局提供有关卤代乙腈（HANs）（三氯乙腈、二氯乙腈、溴氯乙腈和二溴乙腈）、卤酮（Hks）（1,1）浓度的信息- 二氯丙酮和1,1,1-三氯丙烷）以及水合氯醛（CH）是讨论这些化合物法规的前奏。强化混凝是对已经广泛使用的处理工艺的改进，为满足DBP法规提供了一种潜在的解决方案。EPA对强化混凝的定义是，在混凝剂剂量增加10 mg/L时，TOC降低不超过0.3 mg/L。

The aim of this study was to investigate the ability of enhanced coagulation to remove organic precursors of halogenated disinfection byproducts (DBPs). The Environmental Protection Agency (EPA) currently regulates one type of DBP, trihalomethanes (chloroform, dichlorobromomethane, dibromochloromethane, and bromoform). The maximum contaminant level (MCL) for total trihalomethanes (TTHMs) is currently 0.10 mg/L. Stage 1 of the proposed Disinfectant and Disinfection Byproducts (D-DBP) Rule aims to lower the MCL for TTHMs to 0.080 mg/L and establish a MCL of 0.060 mg/L for total haloacetic acids (THAAs). The proposed Information Collection Rule will require utilities to collect and provide to the EPA information on concentrations of haloacetonitriles (HANs) (trichloroacetonitrile, dichloroacetonitrile, bromochloroacetonitrile, and dibromoacetonitrile), haloketones (Hks) (1,1-dichloropropanone and 1,1,1-trichloropropanone), and chloral hydrate (CH) precursive to discussions of regulations for these compounds. Enhanced coagulation, which is a modification to an already widely used treatment process, offers a potential solution to meeting DBP regulations. The EPA definition of enhanced coagulation is that coagulant dose at which an increase in 10 mg/L of coagulant does not reduce the TOC more than 0.3 mg/L.