Fig. 1From: Treatment of urban wastewater with pure moving bed membrane bioreactor technology at different filling ratios, hydraulic retention times and temperaturesSchematic diagram of the moving bed biofilm reactor-membrane bioreactor (MBBR–MBR) pilot plant. The influent from the primary settler is introduced in the MBBR tank where the carrier is contained and biodegradation takes place. The MBBR is followed by the MBR tank to solids separation in sludge flow (purge) and treated wastewater flow (effluent). The ultrafiltration membrane units worked in phases of 9.75 min of permeating and 0.25 min of backwashingBack to article page