The Anti-Shock Loading Capability of Recirculated Membrane Bio-Reactor for Domestic Wastewater Treatment
分置式膜-生物反应器处理生活污水的抗冲击负荷能力

Under shock loading of triple normal strength Recirculated Membrane Bio Reactor (RMBR)for domestic wastewater treatment exhibited high stability,the effluent COD concentration maintained normal value while mixed liquor supernatant COD value as well as TransMembrane Pressure(TMP)showed only slight increase.On contrast to the model for Conventional Activated Sludge(CAS)system,a model for MBR to describe the variations of COD concentration,the biomass concentration and organic removal capability(R0)was established.The models were employed to simulate the operational behaviors of both RMBR and CAS systems.The results agree well with experimental results:RMBR exhibits higher organic removal capability and higher biomass concentration(MLVSS) than CAS does.Mixed liquor supernatant COD concentration of RMBR increases much slower than CAS and recovers to its normal value rapidly after the disappearance of shock loading.The strong anti shock loading capability and high operational stability of RMBR imply its convenience and endurance in practical operation and the security in treated water quality.