使用系统分析方法评估了几个全尺寸水处理厂的颗粒去除性能。讨论了原水中颗粒体积浓度的来源，提出了原水中的“溶解”有机物可能是在液固分离之前进行混凝时颗粒体积的重要来源。不同的无机混凝剂在加入水中时会产生不同的固相。在原水中的粒度分布因水中溶解有机碳的变化而调整后，在大多数情况下，实践中选择的单元工艺配置与计算成本的配置相对应- 最优的包括25个参考文献、表格和图表。

The particle-removal performance of several full-scale water treatment plants is evaluated using a systems analysis approach. Sources of particle-volume concentration in raw water are discussed, and it is suggested that "dissolved" organic materials in raw water may be an important source of particle volume when coagulation precedes liquid-solid separation. Different inorganic coagulants were found to produce different solid phases when added to water. After distribution of particle sizes in raw water was adjusted for changes resulting from dissolved organic carbon in the water, configurations of the unit processes chosen in practice were found in most cases to correspond to configurations calculated to be cost-optimal. Includes 25 references, tables, figures.