在用石灰软化厂沉淀水进行的实验室规模过滤试验中，发现颗粒分离对突破有很大影响。通过精心设计的实验程序明确研究了分离，该程序包括在长时间过滤器运行结束时进水颗粒浓度的突然降低。在所研究的悬浮液的中等粒径范围内，颗粒分离（以及由此产生的突破）最为显著；这种中等大小的范围与通常与隐孢子虫卵囊有关。 包括20个参考文献、表格和图表。

In laboratory-scale filtration experiments conducted with settled water from a lime-softening plant, breakthrough was discovered to be greatly influenced by particle detachment. Detachment was studied explicitly through a carefully designed experimental procedure that incorporated a sudden decrease in the influent particle concentration at the end of lengthy filter runs. Particle detachment (and, consequently, breakthrough) occurred most dramatically in an intermediate size range for the suspension studied; this intermediate size range coincides with that commonly associated with Cryptosporidium oocysts. Includes 20 references, tables, figures.