预处理是颗粒活性炭技术的一个重要方面，可能会对活性炭的性能和经济性产生重大影响。在这项研究中，河水被用作天然有机物的来源，以评估操作变量对有机物去除的影响。研究发现，随着明矾用量的增加，有机物的去除率增加，需要比通常用于去除浊度的明矾用量更高的明矾用量才能获得最佳的有机物去除率。明矾剂量和pH值是最重要的变量。包括10个参考文献、表格和图表。

Pretreatment is an important aspect of granular activated carbon technology and may have a significant influence on carbon performance and economics. In this study river waters were used as a source of naturally occurring organic material to assess the impact of operating variables on organics removal. It was found that organics removal is increased with increasing alum doses, and that alum doses higher than those normally used for turbidity removal are needed to obtain the best organics removal. Alum dose and pH were the most important variables. Includes 10 references, table, figures.