原生动物病原体的物理化学去除正受到越来越多的关注，因为 化学灭活这些生物，特别是隐孢子虫的难度 帕武姆。大多数通过过滤去除这些病原体和其他病原体的研究已经完成 在优化的预处理条件下，在稳态条件下进行。这项研究 评估隐孢子虫的去除和替代物的变化 滤波器循环中不同点的参数以及非最优情况下的参数 两个具有不同凝固制度的中试工厂的条件。 该研究发现隐孢子虫存在可重复的2-log差异 在最佳条件下，两个位置之间的移除 类似的低出水浊度水平和颗粒计数。任何一个 在过滤器运行结束时出现次优凝固或早期突破阶段 隐孢子虫清除能力大幅下降。过滤熟化还是强加 通常，液压台阶的高度对移除的影响要小得多。 包括37个参考文献、表格、图表。

Physicochemical removal of protozoan pathogens is receiving increased attention because of the difficulty of chemically inactivating these organisms, particularly Cryptosporidium parvum. Most research examining the removal of these and other pathogens by filtration has been conducted under steady-state conditions with optimized pretreatment. This study evaluated the removal of Cryptosporidium and changes in surrogate parameters at various points in the filter cycle and under nonoptimal conditions at two pilot plants with different coagulation regimes. The study found a reproducible 2-log difference in Cryptosporidium removals between the two locations under optimal conditions, with similar low effluent turbidity levels and particle counts. Either suboptimal coagulation or the early stages of breakthrough at the end of a filter run produced substantial deterioration of Cryptosporidium removal capability. Filter ripening or the imposition of a hydraulic step generally had much less effect on removals. Includes 37 references, tables, figures.