The Membrane Bioreactor (MBR) is an innovative wastewater treatment technology that combines membrane separation with biological processes. It employs membrane separation devices to retain activated sludge and large organic substances in the bioreactor, eliminating the need for a secondary sedimentation tank. This significantly increases activated sludge concentration, reduces hydraulic retention time (HRT) and solid retention time (SRT), effectively treating hard-to-degrade substances. The MBR process strengthens the functionality of the biological reactor through separation technology.

Compared to traditional biological treatment methods, MBR offers several advantages, including high biochemical efficiency, strong shock load resistance, stable effluent water quality, a small footprint, long sludge discharge cycle, and easy implementation otf automatic control. It is currently one of the most promising wastewater treatment technologies. Our company's MBR membrane bioreactor utilizes hollow fiber membranes as the primary component, combining traditional integrated equipment processing technology with hydrolytic acidification, aerobic biological treatment, and MBR membrane filtration technology. It incorporates the strengths of both biochemical and MBR processes, resulting in more effective treatment outcomes.

Scope of Application

Expansion and upgrading of existing wastewater treatment systems.
Construction of municipal wastewater treatment systems.
Water reuse for reclaimed water.

Working Principle:

In the MBR system, membrane modules replace the conventional secondary sedimentation tank used in traditional biological treatment processes. By maintaining a high concentration of activated sludge in the bioreactor, the organic loading rate of the biological treatment process is increased, thereby reducing the required footprint of the treatment facility.
At the same time, the sludge production is reduced by operating under a low sludge loading rate. The membrane separation unit, immersed in the aerobic tank, retains activated sludge and macromolecular organic matter within the bioreactor. The MLSS concentration in the MBR system can reach 8,000–10,000 mg/L or higher, and the sludge retention time (SRT) can be extended to more than 30 days.

Application