Working Principle:After the sewage enters the bioreactor, the microorganisms decompose and metabolize the pollutants. After that, the mixed liquid enters the membrane component. Under pressure or suction, the water passes through the membrane pores to become the treated effluent, while the microorganisms, macromolecular organic matter, etc. are retained by the membrane and flow back to the bioreactor to continue to participate in the reaction.System composition1. Membrane separation component: It is the core part of the MBR system and is used to achieve solid-liquid separation. Common membrane component forms include plate and frame type, spiral roll type, circular tube type, hollow fiber type and capillary type2 Bioreactor: Provide a place for microorganisms to survive and metabolize, so that pollutants in the wastewater can be degraded and removed under the action of microorganismsAdvantages1. The effluent water quality is high-quality and stable: suspended solids and turbidity are close to zero, and bacteria and viruses are greatly removed.2 Low residual sludge production: It can operate under high volumetric load and low sludge load, and theoretically can achieve zero sludge discharge.3 Small footprint: The bioreactor can maintain a high concentration of microorganisms, with a high volumetric load, no secondary sedimentation tank is required, and space is saved.4. Ammonia nitrogen and refractory organic matter can be removed: microorganisms that proliferate slowly, such as nitrifying bacteria, can be intercepted to improve the degradation efficiency of refractory organic matter.5. Convenient operation and management: complete separation of hydraulic retention time and sludge retention time can be achieved, and automatic control can be easily realized.6. Easy to transform from traditional processes: It can be used as a deep treatment unit of traditional sewage treatment processes.