本文描述的工作研究了明矾混凝和石灰软化常规处理对直接去除与不同来源的腐殖物质相关的总有机碳（TOC）以及随后活性炭吸附残余TOC的影响。选择密歇根州安娜堡市原水供应（休伦河）中的一种商用腐殖酸、一种商用黄腐酸和腐殖酸进行研究。研究结果表明，明矾混凝和石灰软化在去除供水中与腐殖物质相关的TOC方面表现出不同的效果。 这种可变性主要与腐殖物质来源和类型的差异有关。明矾和石灰处理都会产生腐殖酸残留物，其吸附特性与化学预处理前相同水体中的不同。；包括6个参考文献、表格、图表。

The work described in this article investigated the effects of conventional treatment by alum coagulation and lime softening on the direct removal of the total organic carbon (TOC) associated with humic substances of different origins and on the subsequent adsorption of residual TOC by activated carbon. One commercial humic acid, one commercial fulvic acid, and humic acid present in the raw water supply (Huron River) of the city of Ann Arbor, Michigan, were selected for study. The results of the study indicated that alum coagulation and lime softening exhibit variable effectiveness for removing the TOC associated with humic substances in water supplies. This variability relates primarily to differences in the sources and types of humic matter. Both alum and lime treatment result in humic residuals that manifest different adsorption characteristics than those present in the same waters prior to chemical pretreatment.;Includes 6 references, tables, figures.