▎ 摘　　要

NOVELTY - The preparation of nanofiber membrane involves (1) weighing certain amount of polyacrylonitrile powder, dissolving in dimethylformamide solution containing graphene oxide and stirring at room temperature for 30-50 hours to obtain uniform, transparent polyacrylonitrile spinning solution containing graphene oxide, (2) at room temperature, taking the prepared mixed spinning solution in a disposable syringe, fixing the syringe with needle on the supply system of the electrospinning equipment for spinning and preparing a composite nanofiber membrane of graphene oxide/polyacrylonitrile, (2) adding a certain amount of composite nanofiber membrane to certain concentration of cadmium-containing wastewater, at room temperature and certain pH value, reacting for certain period of time, testing the concentration of cadmium ions before and after adsorption and calculating the amount of adsorption. USE - Preparation of nanofiber membrane for removing heavy metal cadmium ions from waste water. ADVANTAGE - The method enables preparation of nanofiber membrane ensuring rapid removal of heavy metal cadmium ions in wastewater by simple and efficient process.