这项工作的目标是:在过滤前找到去除硅藻的最佳混凝条件；确定藻类浓度、藻类大小和过滤介质大小对过滤器运行时间的影响。在某些情况下，全面的植物研究表明，过滤器运行时间急剧减少，与硅藻浓度无关。用扫描电子显微镜研究了快速水头损失与硅藻浓度无关的原因。从1997年1月到1998年5月，对五家韩国水处理厂的过滤器运行时间进行了监测，以分析过滤器堵塞问题。从七种不同的过滤器（包括砂过滤器和双介质过滤器）中取样过滤介质，并进行筛分，以计算其有效尺寸和均匀系数。 包括7个参考文献、表格、图表。

The objectives of this work were to: find optimum coagulation conditions for the removal of diatoms prior to filtration; and, determine the effects of algae concentration, algae size and filter media size on filter run time. In some instances, full-scale plant studies showed that filter run times decreased sharply, independently of the diatom concentration. The reasons why rapid head loss developed irrespectively of the diatom concentration were also investigated with scanning electron microscopy. Filter run times of five Korean water treatment plants were monitored to analyze filter clogging problems from January 1997 to May 1998. Filter media were sampled from seven different filters including sand and dual media filters and sieved to calculate their effective sizes and uniformity coefficients. Includes 7 references, tables, figures.