Three years experience with the largest two stage ultrafiltration plant for drinking water production (7,000 m~3/h) of Germany

摘要

The WAG Wassergewinnungs- und -aufbereitungsgesellschaft Nordeifel mbH Germany is operating one of the largest combined coagulation ultrafiltration (UF) plants worldwide and the largest in Germany. Its maximum capacity is about 7,000 m~3/h of drinking water Furthermore a secondary UF stage with a capacity of about 630 m~3/h has been used to treat the back-wash water of the first stage. The innovative plant design results from an intensive preliminary pilot period, in which several advanced concepts had been investigated. The paper reflects the long term experience with operation and monitoring of the plant over a period of about 3 years. Up to now expectations regarding performance in terms of permeability, retention, and reliability have been exceeded. The predicted specific treatment costs of about 10 ?Ct/m~3 drinking water were achieved or even reduced.