本文讨论了在Bearspaw水处理厂进行的一项研究。由于Bearspaw水处理厂的过滤水浊度始终小于0.1 ntu，因此使用颗粒计数来评估混凝剂剂量的变化及其对过滤器性能的影响。在工厂进行混凝剂优化试验的目的是减少过滤水中的颗粒数量范围，并生产质量更稳定的成品水。讨论了研究的方法和结果。包括17个参考文献、表格、图表。

This article discusses a study conducted at the Bearspaw Water Treatment Plant. Because filtered water turbidity at the Bearspaw Water Treatment Plant is consistently less than 0.1 ntu, particle counting was used to evaluate changes in coagulant dosages and their effect on filter performance. The goal of coagulant optimization trials at the plant was to reduce the range of particle counts in filtered water and to produce a finished water of more consistent quality. Methods and results of the study are discussed. Includes 17 references, tables, figures.