Membrane Bioreactor (MBR)
A membrane bioreactor is a wastewater treatment processes where a perm-selective membrane is integrated with a biological process – a suspended growth bioreactor. It connects membrane filtration to a biological active sludge system. The membranes thus replace the sedimentation basin in classic biological purification and help to separate the sludge from the effluent. This helps to ensure that all floating matter is retained, whereby sedimentation is no longer a restrictive factor for sludge concentration. A membrane reactor is thus able to process significantly higher sludge concentrations (10 to 20 g/l) and lower reactor volumes, compared to conventional systems.