Membrane bioreactor

Under a membrane bioreactor reactor ( MBR) is defined as a wastewater treatment plant type (especially small wastewater treatment plants ), which can increase the aid of membranes in the range between 0.1 and 0.01 micron (ultrafiltration ), its efficiency. The system states is usually operated by means of cross-flow filtration.

The membranes can be used as a plate winding or modules in the form of hollow fibers, as well. A distinction is made between ventilated and unventilated systems. The MBR plant is often used to achieve a final sedimentation of domestic or municipal wastewater. For this, the MBR can also be dipped in existing biological treatment stages. However, an external arrangement is sought frequently, which enables easier maintenance by providing better access to investment.

Areas of application for submerged membrane systems are:

• Gray water treatments
• Rainwater and surface water treatment
• Retention of biology from industrial and domestic effluents

A further advantage is the almost sterile filtration by the selected pore size and the resulting deposition of pathogenic germs. Prions are only partially retained.