▎ 摘　　要

NOVELTY - Graphene-reinforced photothermal evaporation film comprises hollow fiber membrane. The inner surface, the outer surface and the cross-section of the photothermal evaporation film are evenly distributed with graphene with a two-dimensional sheet structure. The photothermal evaporation film has a gradient ordered pore structure. The pore size from the inner surface to the outer surface changes from large to small, and the average pore size of the photothermal evaporation film is less than 30nm. USE - The sewage concentration treatment device is useful in polluted seawater, medicinal waste water, organic solvent, chemical waste water, reverse osmosis concentrated waste water, garbage permeate waste water, sludge reduction and extrusion concentrated waste water (claimed). ADVANTAGE - The method adopts graphene with high strength, excellent hydrophobic properties, photothermal conversion and thermal conductivity as raw material; realizes the preparation of photothermal modified materials through a one-step method; and designs a sewage concentration treatment device with high specific surface area and efficient photothermal conversion to achieve efficient solar-driven photothermal evaporation and concentration. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: a membrane assembly; and a sewage concentrating processing device. (1) a method for preparing graphene-reinforced photo-thermal evaporation film; DESCRIPTION OF DRAWING(S) - The drawing shows a schematic representation of the sewage concentration treatment device.