▎ 摘　　要

NOVELTY - A graphene composite sponge comprises a graphene, and a polymer sponge. The graphene is graphene oxide or unoxidized graphene. USE - The graphene composite sponge is used for treating oily organic pollutants in sewage (claimed). DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of the graphene composite sponge, comprising: (A) mixing graphene with water to prepare an aqueous graphene solution; (B) soaking polymer sponge in the aqueous grapehen solution to obtain a a graphene composite sponge; and (C) soaking in a reducing agent solution.