▎ 摘　　要

NOVELTY - A graphene oxide composite water treatment membrane comprises a three-layer composite structure, i.e. polymer porous material pretreatment layer (1), graphene oxide active purification layer (2), and polymer porous material support layer (3), from top to bottom. USE - A graphene oxide composite water treatment membrane for water purification devices and water treatment engineering equipment. ADVANTAGE - The membrane can effectively filter microorganisms, organic substances, heavy metals, and bacteria in water; graphene oxide particles can be less encapsulated to maintain the filtering efficiency of graphene oxide; and thermoplastic polymer binder can simultaneously bond the pretreatment layer and the support layer material. Forming a film-like material can avoid graphene oxide loss. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of graphene oxide composite water treatment membrane which involves pre-configuring graphene oxide, thermoplastic polymer binder, other active materials, and auxiliary agents into a sol ink, sufficiently dispersing sol ink, and supporting sol ink on support layer of polymer porous material by a coating method, depositing polymer porous material pretreatment layer, drying, and hot-press molding. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic diagram of the graphene oxide composite water treatment membrane. Polymer porous material pretreatment layer (1) Graphene oxide active purification layer (2) Polymer porous material support layer (3)