▎ 摘　　要

NOVELTY - Preparing pollution-resistant conductive filter membrane involves preparing functional membrane casting liquid by uniformly mixing graphene oxide and dimethylformamide (DMF) according to mass ratio of 1:400. The 5-10wt.% polyvinylidene difluoride (PVDF) and 1-3wt.% polyvinylpyrrolidone (PVP) are added in membrane casting liquid, stirred uniformly, de-foamed in vacuum at room temperature and deaerated for future use. Functional membrane casting liquid is continuously coated on the substrate and uniform film thickness is controlled. USE - Method for preparing pollution-resistant conductive filter membrane used as the microbial fuel cell (MFC) negative electrode and membrane bioreactor (MBR) filtering membrane (claimed). ADVANTAGE - The method enables preparation of pollution-resistant conductive filter membrane, which is cost-effective, effectively controls membrane pollution, synergistically increases organic matter waste water energy conversion rate, and efficiently utilizes the waste water resources. DETAILED DESCRIPTION - Preparing pollution-resistant conductive filter membrane involves preparing functional membrane casting liquid by uniformly mixing graphene oxide and dimethylformamide (DMF) according to mass ratio of 1:400. The 5-10wt.% polyvinylidene difluoride (PVDF) and 1-3wt.% polyvinylpyrrolidone (PVP) are added in membrane casting liquid, stirred uniformly, de-foamed in vacuum at room temperature and deaerated for future use. Functional membrane casting liquid is continuously coated on the substrate and uniform film thickness is controlled. After coating, substrate is temporarily paused in the air directly after the film is horizontally immersed into de-ionized water, where soaking time is greater than or equal to 3 hours, which guarantees the phase conversion completely. The obtained flat membrane is placed in hydroiodic acid at greater than or equal to 80 degrees C for 2-3 minutes for reducing graphene oxide. After reduction, color of the flat membrane surface changes into black. The flat membrane is placed in absolute ethyl alcohol to elute unreacted hydroiodic acid, then washed with deionized water. Flat membrane is immersed in potassium permanganate solution for leaching and after the complete oxidation rinsed with deionized water for preparing manganese dioxide catalyst in situ.