进行了几项小型研究，以评估强化混凝对控制氯化副产物的有效性，并评估混凝pH值预调整对总有机碳（TOC）去除和工厂运营成本的影响。在TOC值为2至11 mg/L的各种地表水源上进行了试验。铁基混凝剂（如三氯化铁）在去除天然有机物（NOM）方面始终比明矾更有效。当三氯化铁用作主混凝剂时，混凝pH值似乎是最大NOM去除率的决定因素。通常，预先调整pH值为6.0±0.2时，NOM的总去除率将提高到65%，混凝剂剂量将降低60%。 强化混凝导致总体运行成本较高，但通过降低混凝剂用量和污泥产量，用硫酸预调整pH值降低了成本。包括13个参考文献、表格、图表。

Several bench-scale studies were conducted to evaluate the effectiveness of enchanced coagulation for controlling chlorination byproducts and to assess the impact of coagulation pH preadjustment on total organic carbon (TOC) removal and plant operating costs. Tests were conducted on a variety of surface water sources with TOC values ranging from 2 to 11 mg/L. An iron-based coagulant, such as ferric chloride, was consistently more effective than alum in removing natural organic matter (NOM). Coagulation pH appeared to be a determining factor for maximum NOM removal when ferric chloride was used as a primary coagulant. Typically, preadjustment of pH at a value of 6.0 plus or minus 0.2 increased NOM overall removal to as much as 65 percent and reduced the coagulant dose by as much as 60 percent. Enhanced coagulation led to higher overall operating costs, but preadjustment of pH with sulfuric acid reduced costs by lowering the coagulant dosage as well as sludge production. Includes 13 references, tables, figures.