AWWA MTC50266

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.

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Edition:

Vol. - No.

Published:

01/01/1999

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1 file , 150 KB