▎ 摘　　要

NOVELTY - Nano-silver composite treatment agent comprises nano-silver material and hydrophilic polymer in a mass ratio of 1:15-20. The raw material of nano-silver material includes silver nitrate having purity of more than 99%, reducing agent L-ascorbic acid having purity of more than 99%, polyvinylpyrrolidone having molecular weight of approximately55000, ultrapure water, and analytically pure absolute ethanol. The raw material of hydrophilic polymer includes analytically pure polysulfone, solvent analytically pure N-methyl-2-pyrrolidone, hydrophilic modifier self-made graphene oxide, and silica mesoporous (SBA-15) as mesoporous additive. The raw material hydrophilic modifier self-made graphene oxide contains analytically pure powdered graphite, analytically pure sodium nitrate, analytically pure sulfuric acid, analytically pure potassium permanganate, ultrapure water, and 5% hydrogen peroxide. USE - The nano-silver composite treatment agent is useful for improving anti-pollution ability of membrane bioreactor membrane (claimed). ADVANTAGE - The nano-silver composite treatment agent: can significantly reduce the adsorption and accumulation of hydrophobic organic pollutants on the surface of the membrane bioreactor membrane and the growth and accumulation of biological films on the surface of the membrane bioreactor membrane, improve the antifouling ability of the membrane bioreactor membrane, and maintain the permeability of the membrane bioreactor membrane; greatly prolongs the interval between backwashing and chemical cleaning of the membrane bioreactor membrane; and prolongs the service life of the membrane bioreactor.