研究了优化混凝对颗粒活性炭（GAC）去除天然有机物和控制消毒副产物性能的影响。为去除总有机碳（TOC）而优化的混凝使GAC的运行时间比接受常规处理水的GAC的运行时间增加了2-3倍。与传统预处理相比，优化混凝后的进水总有机碳和pH值降低，是提高性能的主要原因。GAC前的常规凝固比优化凝固更具成本效益，因为本研究中使用的高剂量明矾会增加成本。包括38个参考文献、表格和图。

The effect of optimized coagulation on granular activated carbon (GAC) performance for removal of natural organic matter and control of disinfection byproducts was investigated. Coagulation optimized for total organic carbon (TOC) removal increased GAC run times by a factor of 2-3 over run times observed for GAC receiving conventionally treated water. The improved performance was mainly a result of reductions in influent TOC and pH after optimized coagulation, as compared with conventional pretreatment. Conventional coagulation prior to GAC was more cost-effective than optimized coagulation, because of increased costs associated with the high alum dosages used in this study. Includes 38 references, table, figures.