美国环境保护局（USEPA）的规定对美国的消毒副产品越来越严格 自第一阶段和第二阶段消毒颁布以来的饮用水分配系统 副产品规则。过去，在科罗拉多州勒普顿市，三卤甲烷总量 （TTHM）配水系统中的浓度超过最大污染 级别（MCL）。目前，一种直接膜微滤工艺随后是氯气 勒普顿Ft.Lupton水处理厂采用了消毒方法，但该厂在过去几年一直无效 去除总有机碳（TOC）（消毒副产品的前体）。增强 通过膜超滤辅助凝固，无需澄清，这 大大减少了工厂的占地面积。 超滤也能有效地去除废水 病原体、细菌和病毒。进行了一项试点研究，其目的是 评估强化混凝、膜超滤、， 颗粒活性炭（GAC）及其组合对TOC去除的影响 符合第2阶段消毒副产品规则（S2DBPR）的可能性。飞行员 工厂的产能为4.5m³/h，已建成并运行了两个多月。铁混凝 硫酸盐在pH值和化学加药速率方面进行了优化。结果表明，增强的 在pH值为5.7和 25 mg/L铁剂量。膜通量稳定在1.5L/m²/min，持续约1个月 需要化学清洗来恢复。 在直接膜上附加GAC柱 超滤对GAC20的TOC去除率为45%，对GAC10的TOC去除率为17%。 通过强化混凝、膜分离和生物降解相结合，去除了约80%的TOC 超滤和GAC10过滤。模拟配电系统（SDS）-TTHM分析 表明如果 单独实施。对不同组合的可能成本（OPC）提出了意见 估计并表明，膜超滤辅助强化混凝是一项成本较低的技术 有效的包括8个参考文献、表格、图表。

The U.S. Environmental Protection Agency (USEPA) regulation has been more and more stringent on disinfection byproducts in drinking water distribution systems since the promulgation of the Stage 1 and Stage 2 Disinfection Byproducts Rules. In the past, at the City of Ft. Lupton, Colorado, total trihalomethanes (TTHM) concentrations in the water distribution system exceeded the maximum contamination level (MCL). Currently, a direct membrane microfiltration process followed by chlorine disinfection is employed at the Ft. Lupton Water Treatment Plant, which has been ineffective in the removal of total organic carbon (TOC) (the precursor of disinfection byproducts). Enhanced coagulation assisted by the membrane ultrafiltration eliminates the need for clarification, which significantly reduces the footprint of the plant. Ultrafiltration is also effective in the removal of pathogens, bacteria, and viruses. A pilot study was conducted, the objectives of which were to evaluate the efficiency and feasibility of enhanced coagulation, membrane ultrafiltration, granular activated carbon (GAC), and their combinations on TOC removal and examined the likelihood of the compliance with Stage 2 Disinfection Byproducts Rule (S2DBPR). A pilot plant at the capacity of 4.5 m³/h was set up and run for over two months. Coagulation with ferric sulfate was optimized in terms of pH and chemical dosing rate. Results show that enhanced coagulation assisted by membrane ultrafiltration achieved up to 56% TOC removal at pH 5.7 and 25 mg/L ferric dose. The membrane flux was stable at 1.5 L/m²/min for about 1 month without the need for chemical cleaning for recovery. Appending GAC columns to direct membrane ultrafiltration achieved 45% TOC removal for GAC20 and 17% TOC removal for GAC10. About 80% of TOC was removed with the combination of enhanced coagulation, membrane ultrafiltration, and GAC10 filtration. Simulated Distribution System (SDS)-TTHM analysis indicated that enhanced coagulation and GAC20 will lead to S2DBPR compliance if implemented individually. Opinions of Probable Costs (OPC) for different combinations were estimated and indicated that enhanced coagulation assisted by membrane ultrafiltration was cost effective. Includes 8 references, tables, figures.