▎ 摘　　要

NOVELTY - The membrane has a nano-filtration membrane body arranged on a porous supporting membrane i.e. mixed Cellulose filter membrane. A surface of an aryl-alcohol oxidase substrate film is attached with a graphene oxide film, where thickness of the thickness of not more than 100 nm is less than 100 nm. The aryl-alcohol oxidase substrate film and the graphene oxide film are placed on a water surface. The graphene oxide film is lifted from the water surface by using the porous supporting film. The graphene oxide film is covered on a surface of the porous supporting film. An edge of the aryl-alcohol oxidase substrate film is formed with a pressing position. USE - Folding type graphene nano-filtration membrane. ADVANTAGE - The membrane has wide application range, better antifouling properties and strong controllability, reaches desalting rate of organic dye for about 100 %, realizes graphene nano-filtration membrane manufacturing process in simple and easy manner, consumes less production cost, and avoids pollution. DESCRIPTION OF DRAWING(S) - The drawing shows a front view of a folding type graphene nano-filtration membrane.