Integrated MBR membrane bioreactor

Description

‌ Integrated MBR membrane bioreactor (MBR) is a new type of sewage treatment system that combines membrane separation technology with biological treatment technology. It replaces the secondary sedimentation tank at the end of the traditional biological treatment process with membrane components to maintain a higher concentration of activated sludge in the bioreactor, thereby increasing the organic load of biological treatment, reducing the footprint of sewage treatment facilities, and reducing the amount of residual sludge by maintaining a low sludge load.
Working Principle
The MBR system uses membrane separation equipment immersed in an aerobic biological pool to effectively intercept activated sludge and macromolecular organic matter in the biochemical reaction tank. The mechanical interception of the membrane avoids the loss of microorganisms and maintains a high sludge concentration, thereby increasing the volumetric load and shock load resistance of the system. Through membrane separation technology, the MBR system can achieve separate control of sludge age (SRT) and hydraulic retention time (HRT), simplifying design and operation.
Advantages
.‌ Efficient removal of pollutants‌: MBR can efficiently remove organic matter and suspended matter in sewage, and the effluent water quality is stable and reliable, and there is no suspended matter in the effluent.‌
.‌High sludge concentration and volume load‌: Through the interception effect of the membrane, the concentration of activated sludge in the MBR system can be increased to 8000~10000mg/L, or even higher, and the sludge age can be extended to more than 30 days, which improves the system’s ability to resist shock loads‌.
.‌Small footprint‌: Due to the omission of the secondary sedimentation tank, the footprint is reduced, saving infrastructure investment‌.
.‌Easy to operate and manage automatically‌: The MBR process structure is simple, easy to realize automatic control, and easy to operate and manage‌.
.‌Good effluent quality‌: The SS and turbidity of the treated effluent are close to zero, and the effluent can be directly reused‌.
.‌Low residual sludge production‌: By extending the sludge age, the production of residual sludge is reduced, and the cost of sludge treatment is reduced.
.‌Suitable for the growth of a variety of microorganisms‌: MBR creates an environment that is conducive to the growth of slow-growing microorganisms such as nitrifying bacteria, improving the system’s nitrification capacity and the treatment efficiency of difficult-to-degrade organic matter‌.
.‌Strong anti-pollution ability‌: MBR membrane components have strong anti-pollution ability and rapid flux recovery ability‌.
Application scenarios
MBR is suitable for a variety of sewage treatment scenarios, including domestic sewage, industrial wastewater, etc. Due to its high efficiency, stable treatment effect and small footprint, MBR has significant advantages in the field of sewage treatment and is suitable for large-scale promotion and application‌.