有关微生物去除的水质法规增加了人们对使用微滤（MF）和超滤（UF）作为防止原生动物囊肿和病毒的屏障的兴趣。因此，开展了一项研究，以评估各种MF和UF膜对这些微生物的去除效果，并阐明去除机理。所有的中空纤维膜都将小鼠贾第鞭毛虫囊肿和微小隐孢子虫卵囊去除到检测极限以下。只要膜保持完整，渗透液中就没有检测到囊肿或卵囊。这些生物体从给水中的物理应变似乎是主要的作用机制。病毒去除的程度取决于细胞膜- 具体，删除范围为<0。5个日志和gt6日志。出现了三种有助于去除滤饼的物理层或滤饼现象:吸附层或滤饼。这些因素的相对贡献是水质、运行或过滤时间以及膜特性的函数。包括19个参考文献、表格和图表。

Water quality regulations dealing with microbial removal have increased interest in using microfiltration (MF) and ultrafiltration (UF) as barriers against protozoan cysts and viruses. Consequently, a study was conducted to evaluate the removal of these organisms by a variety of MF and UF membranes and to elucidate removal mechanisms. All of the hollow-fiber membranes evaluated removed Giardia muris cysts and Cryptosporidium parvum oocysts to below detection limits. No cysts or oocysts were detected in the permeate as long as the membrane remained intact. Physical straining of these organisms from the feedwater appeared to be a primary mechanism of action. The extent of virus removal was membrane-specific, with removals ranging from <0.5 log to >6 logs. Three phenomena appeared to contribute to virus removal: physical sieving or adsorption, cake layer formation, and fouling state of the membrane. The relative contribution of each of these was a function of water quality, time of operation or filtration, and membrane characteristics. Includes 19 references, tables, figures.