| A hybrid submerged membrane bioreactor (HSMBR) was devised for a pilot study in Mencheng Wastewater Company for municipal wastewater treatment and reuse. Hybrid membrane bioreactor process combines both suspended growth activated sludge process and attached grow biofilm process in one bioreactor by adding suspended carriers into conventional activated sludge reactor ,a submerged MF membrane module was equipped in the bioreactor for solid/liquid separation.This test has a initial search for the craft parameter, operation terms and the quality of outlet water. The research focused on the the characteristic on the removal of organic pollutants and other relevant impact factors. In addition, Membrane fouling,how to control the membrane pollution and refreshing were also discussed.The experiment indicates : under the condition of 44% carrier addition. When water yield is 0.8m3/h, aeration volume is 3 m3/h ,the average concentration of HMBR system is COD=34.3mg/L,NH4+-N=0.94mg/L , Turbidity=0.03NTU, The average removal rates are 36.4%, 94.5%, 99%, each quota of the treated water met the quality standard of wastewater reuse. The treated wastewater can be reused .The system has higher organics removal , stronger shock loading rate and marked nitrification.About the membrane fouling :①Further increase of the cake layer was effectively prevented by mechanical vibration of the hollow fiber membrane immersed in the suspension and the hydraulic shearing of the turbulent flow in the aeration tank.②12min working ,3 min intermission for pump .Economic analysis indicates that the total project investment is 5213yuan/m3·d and the running expenditure is 2.02yuan/m3.
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