作为使用超滤（UF）去除颗粒的项目的一部分，进行了研究，以评估使用低压中空纤维UF作为符合地表水处理规则（SWTR）微生物去除和/或灭活要求的替代方法。对四种不同的未经处理的水源水进行了初步研究。通过进行MS2病毒、总大肠菌群和鼠贾第鞭毛虫接种研究，以及对自然产生的细菌进行监测，评估工艺效果。研究表明，UF能够在不使用化学消毒的情况下满足替代过滤技术的SWTR要求。 从每个未经处理的源水中去除了四个或更多的贾第虫原木和6.5个以上的病毒原木。水质的差异或操作参数的变化似乎不会影响该工艺的去除能力。膜完整性的维护对于确保工艺效率至关重要。当模块完整性受损时，如纤维断裂，渗透液中同时检测到MS2病毒和小鼠G.菌。渗透液浊度的变化不一定反映膜完整性的变化；然而，颗粒计数是检测受损膜组件的有效方法。 包括41个参考文献、表格、图表。

As part of a project on the use of ultrafiltration (UF) for particle removal, studies were performed to evaluate the use of low-pressure hollow-fiber UF as an alternative for complying with Surface Water Treatment Rule (SWTR) requirements for microbial removal and/or inactivation. Pilot studies were conducted on four different untreated source waters. Process efficacy was assessed by conducting MS2 virus, total coliform bacteria, and Giardia muris seeding studies, as well as monitoring for naturally occurring bacteria. The study showed that UF was capable of meeting SWTR requirements for alternative filtration technologies without the use of chemical disinfection. Four or more logs of Giardia and more than 6.5 logs of virus were removed from each of the untreated source waters. Differences in water quality or changes in operating parameters did not appear to affect removal capabilities of the process. Maintenance of membrane integrity was critical to assuring process efficacy. When module integrity was compromised, as in fiber breakage, both MS2 virus and G. muris were detected in the permeate. Changes in membrane integrity were not necessarily reflected by changes in permeate turbidity; however, particle counting was an effective method for detecting a compromised membrane module. Includes 41 references, tables, figures.