Calvano Cosima Damiana
The river water association, Erftverband looks back on two de- cades of experience in design and operation of municipal mem- brane bioreactors (MBR) in the Erft river catchment in Germany. During that time MBR operations have been monitored scientif- ically and process optimizations have taken place. For example between 2010 and 2015 the specific energy consumption of Nordkanal MBR (80,000 population equivalents) was cut down from 0.94 kWh/m³ to 0.63 kWh/m³ wastewater treated (see figure 1) while membrane filters remain in continuous operation since 2004