AWWA MTC69652

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 m³/h of drinking water. Furthermore, a secondary UF stage with a capacity of about 630 m³/h has been used to treat the backwash 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 EurosCt/m³ drinking water were achieved or even reduced. Includes reference, figures.