MBR reinforced PVDF hollow fiber membrane series: In the conditionof high pressure, high hydrophilia and high fux, more improvementsare made on membrane's polluting resistance and longer life-time, Themembrane elements"compact structure design occupies much lessspace, with easy inslallation.It is used for municipal and industrial waste water treatment. It solvesproblem of the leakage of$S compared with traditional activatedsludge sedimentation process, and prevent microorganism likecolibacillus and cryptospondium from water output.