▎ 摘　　要

NOVELTY - A lasting high anti-pollution performance hollow fiber ultra-filtration membrane comprises graphene with stacking layer of 1-3 layers and has 400-500 nm hybrid hollow fiber membrane, bovine serum albumin interception rate of more than 95%, and antibacterial rate of Staphylococcus aureus of 100% and can continuously run for 72 hours under the 20-30 degrees C. USE - The lasting high anti-pollution performance hollow fiber ultra-filtration membrane is used for water purifying and biological separation. ADVANTAGE - The membrane has large filling density and compact structure. The method is simple and easy to operate, promotes dispersion of graphene in the composite film, inhibits large hole formation, can fully exert the graphene film material hydrophilic, anti-pollution, and antibacterial properties, and improves comprehensive performance of the film. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of the ultra-filtration membrane comprising dissolving polymer and non-solvent in an organic solvent at 40-80 degrees C to prepare a casting solution; dropwise adding graphene solution , stirring, dissolving to form a homogeneous solution, and standing for defoaming to obtain spinning solution; and feeding into the spinneret through filter and metering pump, extruding into a coagulation bath to solidify into a film, and collecting.