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AWWA MTC53826
- Flocculation/Ultrafiltration for Drinking Water Treatment of Reservoir Water
- Conference Proceeding by American Water Works Association, 05/01/2001
- Publisher: AWWA
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The Wasserwerk des Kreises Aachen in Roetgen, Germany operates, with thefinancial assistance of the German Ministry for Education and Research and withscientific support from the IWW in Mulheim, Germany, a large scale membrane pilotplant. This plant is equipped with twelve 6 m-long pressure vessels resulting ina membrane area of about 1620 m2 which produces about 150 m3/hour of filtrate.The pilot plant was operated first with flocculated reservoir water as the feed.The results show that this is a reasonable process especially if the backflushwater from the plant is further treated at another membrane plant to achievehigh overall recoveries of up to 99%. Monitoring of membrane integrity is animportant aspect of this research. Every pressure vessel at the pilot plant canbe connected to a particle counter by switching magnetic valves automatically.Corrupted fibers were detected by particle counting after about 8 months ofoperation. A correlation between the number of broken fibers and particleconcentration in the filtrate could not be established and may not exist as isdiscussed in this paper. Includes 8 references, figures.
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