SINAP Flat sheet membrane is use for MBR. Combining with membrane separation technology and conventional activated sludge (CAS) process, membrane bioreactor (MBR) is a new and efficient wastewater treatment technology. By replacing the secondary sedimentation with membrane module in CAS, the MBR could greatly improve the solid-liquid separation, which would improve both volume loading and effluent quality of system, to meet the requirement of grey water reuse.