▎ 摘　　要

NOVELTY - The membrane has a membrane main body provided with upper and lower ultra-thin polyamide layers. Graphene oxide is formed on a graphene sheet. The upper thin polyamide layer is arranged on an oxidized graphene sheet surface electric charge endowing composite film. Resistance of the lower ultra-thin polyamide layer is less than resistance of a polyamide nanofiltration membrane functional layer. The graphene sheet reacts with polyamide to enhance stability of the membrane main body. Structural characteristic of the composite film is determined to improve film water flux. USE - Graphene oxide modified polyamide composite nanofiltration membrane. ADVANTAGE - The membrane has high wear resistance and high water flux rate and salt retention. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a graphene oxide modified polyamide composite nanofiltration membrane manufacturing method. DESCRIPTION OF DRAWING(S) - The drawing shows a photograph of a graphene oxide modified polyamide composite nanofiltration membrane.