本文报告了荷兰Overijssel供水公司（WMO）在1994年进行的纳滤研究，以供未来在27个处理厂中的11个进行应用。已在四个地下水处理厂开展了纳滤扩大中试工厂调查。在美国，纳滤通常是治疗的第一步。与荷兰不同的是地下水中的铁含量。厌氧条件和高铁含量（分别为25和11 mg/l）是两个处理厂地下水的特征。 为了避免由于可能引入少量氧气而导致的铁污染问题，WMO在常规地下水处理结束时开始了纳滤研究。这一选择的结果是，纳滤装置采用好氧水。给水的MFI值为3-4 s/l[2]（在两种情况下）。包括16个参考文献、表格和图表。

This paper reports on research with nanofiltration by the Water Supply Company of Overijssel (WMO), The Netherlands, in 1994 for the future application at 11 of 27 treatment plants. Extended pilot plant investigation with nanofiltration has been carried out on four groundwater treatment plants. In the US nanofiltration generally is the first step in the treatment. The difference with the situation in the Netherlands is the iron content of the groundwater. Anaerobic conditions and a high iron content (respectively 25 and 11 mg/l) characterizes the groundwater of two of the treatment plants. To avoid problems with iron fouling due to the possible introduction of small amounts of oxygen WMO started research with nanofiltration at the end of the conventional groundwater treatment. The consequence of this choice is that the nanofiltration-installation is fed with aerobic water. The MFI-value of the feed water is 3-4 s/l[2] (in both cases). Includes 16 references, tables, figures.