▎ 摘　　要

NOVELTY - Preparing direct drinking water treatment film comprises carrying out interfacial polymerization of m-phenylenediamine and trimesoyl chloride on the surface of a porous ceramic substrate to form polyamide desalting layer, then coating the polyacrylamide binder, depositing graphene microchips, coating polyacrylamide adhesive, depositing graphene microchips, laser drying and curing to obtain final product. USE - The method: is useful for preparing direct drinking water treatment film. ADVANTAGE - The method: ensures high specific surface area and excellent adsorption and purification ability of graphene of film; purifies and adsorbs layers of the treatment membrane of the multi-layer composite structure synergistically; and adsorbs a large amount of nano-level impurities in water to ensure the safety of drinking water. DETAILED DESCRIPTION - Preparing direct drinking water treatment film comprises carrying out interfacial polymerization of m-phenylenediamine and trimesoyl chloride on the surface of a porous ceramic substrate to form polyamide desalting layer, then coating the polyacrylamide binder, depositing graphene microchips, coating polyacrylamide adhesive, depositing graphene microchips, laser drying and curing to obtain final product, preferably (i) preparing aqueous phase solution containing m-phenylenediamine and oil phase solution containing trimesoyl chloride, (ii) laying porous ceramic substrate with nano-scale micropores on the platform, then immersing in aqueous phase solution containing m-phenylenediamine, reacting for 10-15 minutes, taking out and immersing in the oil phase solution containing trimesoyl chloride, carrying out interfacial polymerization of m-phenylenediamine and trimesoyl chloride on the surface of a porous ceramic substrate to obtain polyamide desalting layer, and taking out to remove excess solvent to obtain initial treatment film, (iii) coating a surface of the initial treatment film with a polyacrylamide adhesive, and then spraying a graphene microchip on the surface of the coating by a high pressure spray device, (iv) repeating step (iii), and (v) rapid heating and drying by a laser, and curing to obtain direct drinking water treatment film having a multilayer structure containing graphene microchips. An INDEPENDENT CLAIM is also included for direct drinking water treatment film comprising a nanometer microporous porous ceramic substrate layer, a polyamide desalting layer, a polyacrylamide adhesive layer, a graphene micro-sheet layer, a bottom layer, polyacrylamide adhesive layer, and graphene microchip layer composition.