本文得出以下结论:1）超滤膜的能量和颗粒去除效率高于微滤膜。经过500多天的测试后，UF膜装置在滤液流速接近9 gpm的条件下运行，滤液颗粒密度在5到60微米之间，与“空白”实验室水相当。2） 用井水测试的超滤膜的平均膜通量约为90gfd。按照这种流量率，资本成本估计不到1美元。 00/加仑/天，在卡博特油井等设施中添加膜过滤。3） 根据试验装置数据得出的运行和维护成本估算为每1000加仑0.16美元。4） 在高达240 mg/L（作为氯）的剂量下，使用次氯酸盐进行定期反洗被证明能有效恢复超滤膜的通量，并且在化学添加和反洗之间的“休息”期内得到加强。除了每天两次的反洗外，每天添加次氯酸盐（作为氯的浓度低于50 mg/L）保持了更高、更稳定的通量，并控制了滤液中的异养细菌，但没有消除。

This paper concludes the following: 1) Energy and particle removal efficiencies were higher with the ultrafiltration (UF) membrane than with the microfiltration (MF) membrane. The UF membrane unit was operated at a filtrate flow rate of almost 9 gpm after more than 500 days of testing, achieving filtrate particle densities in the size range between 5 and 60 microns which were comparable to the "blank" laboratory water. 2) Average membrane flux of about 90 gfd can be expected from the UF membrane tested with well water. At this flux rate, capital costs are estimated at less than $1.00 per gallon per day to add membrane filtration at a facility such as Cabot well. 3) Operating and maintenance cost estimates derived from the test unit data were $0.16 per 1000 gallons. 4) Periodic backwashing with hypochlorite at doses of up to 240 mg/L (as chlorine) proved effective in restoring flux of the UF membrane, and was enhanced by a "rest" period between chemical addition and backwashing. Daily addition of hypochlorite (at less than 50 mg/L as chlorine) in addition to twice daily backwashing has maintained a higher and more consistent flux and controlled, but did not eliminate, heterotrophic bacteria in the filtrate.