▎ 摘　　要

NOVELTY - A flux-regulated graphene oxide nanofiltration membrane preparing method adding an aqueous solution of ethylenediamine to the aqueous solution of graphene oxide, ultrasonic dispersing the mixed solution, mixing the mixed solution onto the surface of the cellulose acetate base film by auxiliary pressure vacuum self-assembly to obtain the composite film, washing several times with deionized water, the auxiliary pressure vacuum self-assembly is a vacuum filtration operation for placing the cellulose acetate base film on a sand core funnel, immersing the composite membrane in a solution of trimesoyl chloride/n-heptane, reacting the ethylenediamine on the graphene oxide sheet sufficiently with the trimesoyl chloride, washing the membrane several times with the n-heptane solution and drying to obtain the finished product. USE - Method for preparing flux-regulated graphene oxide nanofiltration membrane. ADVANTAGE - The method enables preparing flux-regulated graphene oxide nanofiltration membrane with high water flux and interception rate, better separating property, excellent chlorine resistance, simple and easy manner.