▎ 摘　　要

NOVELTY - Preparing high-throughput anti-pollution polyvinylidene fluoride hybrid ultrafiltration membrane involves adding polyvinylidene fluoride, the first catalyst and 2-6 mol/L potassium hydroxide ethanol solution 200-400 mL in the reaction vessel, stirring uniformly to form a mixed solution, stirring, reacting at 50-100℃ for 0.3-1 hours, performing vacuum filtration to obtain the powder, washing obtained powder, drying in a vacuum oven at a temperature of 40-100℃ for 5-11 hours to obtain alkali-treated defluorinated polyvinylidene fluoride, where the weight ratio of first catalyst: polyvinylidene fluoride is 1: (10-20), dissolving ethylenediamine in 3-7.5 L distilled water. USE - Method for preparing high-throughput anti-pollution polyvinylidene fluoride hybrid ultrafiltration membrane used in wastewater (claimed). ADVANTAGE - The method can synchronously improve the film pollution resistance and film flux, and avoids the film pollution caused by post-processing process, and has less recovery rate of the membrane flux. DETAILED DESCRIPTION - Preparing high-throughput anti-pollution polyvinylidene fluoride hybrid ultrafiltration membrane involves adding polyvinylidene fluoride, the first catalyst and 2-6 mol/L potassium hydroxide ethanol solution 200-400 mL in the reaction vessel, stirring uniformly to form a mixed solution, stirring, reacting at 50-100℃ for 0.3-1 hours, performing vacuum filtration to obtain the powder, washing obtained powder, drying in a vacuum oven at a temperature of 40-100℃ for 5-11 hours to obtain alkali-treated defluorinated polyvinylidene fluoride, where the weight ratio of first catalyst: polyvinylidene fluoride is 1: (10-20), dissolving ethylenediamine in 3-7.5 L distilled water, adding graphene, coagulant, and coupling agent to the reactor, stirring to form a mixed solution, adjusting the pH of the reaction system to 4-6 with an acid, heating in a water bath at 15-45℃, stirring magnetically for 8-24 hours, performing vacuum filtration, washing, drying to obtain aminated graphene oxide nanoparticle, where the weight ratio of graphene, ethylenediamine, coagulant, coupling agent is: (12-120):(60-600):(155-1550):15, adding 1 g obtained defluorinated polyvinylidene fluoride, 0.01-10 g obtained aminated graphene oxide particle and 1.4-1.5 g second catalyst into 20 mL methanol solvent, reacting at a temperature of 25-32℃ for 15-20 hours, performing vacuum filtration, washing, drying to obtain aminated graphene oxide, taking 1 g obtained alkali-treated polyvinylidene fluoride aminated graphene oxide powder, adding 3-7 g methylpyrrolidone to disperse uniformly, adding 0.7-0.9 g polyethylene glycol with molecular weight of 10000, 0.2-0.45 g polyoxyethylene sorbitan monooleate, heating water bath under the condition that the temperature is 50-70℃, stirring mechanically for 6-12 hours to obtain the casting solution, scraping, and curing the obtained defoamed membrane to obtain a high-flux anti-pollution polyvinylidene fluoride hybrid ultrafiltration membrane. An INDEPENDENT CLAIM is included for a ultrafiltration membrane obtained by the preparation method of the high-throughput anti-pollution polyvinylidene fluoride hybrid ultrafiltration membrane.