▎ 摘　　要

NOVELTY - This utility new type relates to one used for a water purification processing device of composite film, in particular a composite ultra-filtration membrane, one by support layer (1), base film layer (2) and graphene oxide (3) layer composite. Polysulfone base film layer (2) is attached to the support layer (1) up, graphene (3) composite the polysulfone base film layer (2) is a, wherein the support layer (1) a thickness of 10 to 50 (mu) m, polysulfone base film layer (2) of thickness is 20 to 100 (mu) m, graphene oxide (3) of thickness is 100nm to 20 microns. The advantages is that it has good permeability, resistance, temperature resistance and a high machinery intensity, improving the surface property of the film, increase the hydrophilicity thereof, for a sea water processing, brackish water desalting, water purification filter, increase quality of water, and solve the ultra-filtration membrane is easy to be valid hydrophobic substance pollution of.