▎ 摘　　要

NOVELTY - Cellulose nano fiber-graphene oxide hybrid composite ultrafiltration film comprises at least one layer of cellulose nano fiber and graphene oxide hybrid filter layer, at least one layer of microfiltration membrane support layer or electrostatic spun nanometer fiber support layer. USE - Used as cellulose nano fiber-graphene oxide hybrid composite ultrafiltration film. ADVANTAGE - The composite ultra-filtration membrane: has high anti-pollution and anti-scaling properties; has high pressure-proof performance in oil and water separation process; and has high water flux (more than 2-10 times). DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparation of cellulose nano fiber-graphene oxide hybrid composite ultrafiltration film, comprising soaking micro-filtration membrane or electrostatic spun membrane in water, coating cellulose nano fiber and graphene oxide and/or spraying on the support layers surface and drying.