ULTRA-HYDROPHOBIC COMPOSITE MEMBRANE FOR MEMBRANE AERATED BIOFILM REACTOR PROCESS AND MANUFACTURING METHOD THEREFOR

摘要

The present invention relates to an ultra-hydrophobic composite membrane for a membrane aerated biofilm reactor (MABR) process, the membrane comprising: a porous polyvinylidene fluoride (PVDF) hollow fiber membrane; a non-porous silicone envelope membrane formed on the external surface of the hollow fiber membrane; and a silicone impregnation membrane embedded at a predetermined depth in the inner direction of the hollow fiber membrane from a side in contact with the non-porous silicone envelope membrane. The ultra-hydrophobic composite membrane according to the present invention is free from exfoliation of the silicone envelope membrane, causes no swelling of the silicone envelope membrane even under a high supply pressure, has high oxygen permeability, and has significantly improved durability due to excellent mechanical properties, and thus is commercially usable through the application to the MABR process.