最近发生的水传播贾第虫病暴发引发了人们对水过滤去除囊肿的兴趣。对囊肿模型和小鼠贾第鞭毛虫囊肿的研究表明，适当操作的水过滤设备应该能够去除高比例的蓝氏贾第鞭毛虫囊肿。为了有效去除囊肿，硅藻土（DE）过滤器需要硅藻土预涂层和身体饲料，颗粒介质过滤器需要原水凝结，并在整个过滤器运行过程中产生过滤浊度。包括11个参考文献、表格、图表。

Recent occurrences of waterborne giardiasis outbreaks spurred renewed interest in water filtration for cyst removal. Studies with cyst models and Giardia muris cysts suggest that properly operated water filtration plants should be able to remove a high percentage of Giardia lamblia cysts. For effective cyst removal, diatomaceous earth (DE) filters need diatomite precoat plus body feed, and granular media filters require coagulation of raw water and production of filtered turbidity throughout the entire filter run. Includes 11 references, tables, figures.