▎ 摘　　要

NOVELTY - A forward osmosis membrane producing method involves adding nanotitanium dioxide and graphene oxide to solvent, dispersing nanotitanium dioxide ultrasonically, adding additive to mixture, adding cellulose acetate to mixture, and stirring mixture to obtain casting liquid. The casting liquid is extruded, and fibers are installed into a coagulating groove. Deionized water is added for coagulation to obtain hollow fibers. The hollow fibers are cured in coagulating bath and washed with deionized water to obtain finished product. USE - Method for producing forward osmosis membrane. ADVANTAGE - The method enables producing the forward osmosis membrane with pure water flux of 16.5 l/m2.hour, reverse salt flux of less than 3.5 g/m2.hour and contact angle of 60.2 degrees . DETAILED DESCRIPTION - A forward osmosis membrane producing method involves adding 0.05-4 weight/weight% nanotitanium dioxide and 0.01-1 weight/weight% graphene oxide to solvent, where the solvent is N-methylpyrrolidone, dimethylacetamide, dimethylformamide or 1,4-dioxane, dispersing the nanotitanium dioxide ultrasonically, adding 3-21 weight/weight% additive to the mixture, stirring the mixture for 5-60 minutes, adding 15-40 weight/weight% cellulose acetate to the mixture, and stirring the mixture with stirrer at 20-70 degrees C to obtain casting liquid. The casting liquid is maintained statically at low temperature for 8-24 hours, and bubbles in the casting liquid are removed. The casting liquid is extruded in tank at 0.05-0.5 MPa by metering pump through nozzle to obtain nascent fiber. The fibers are installed into a coagulating groove, and deionized water is added for coagulation to obtain hollow fibers. The hollow fibers are cured in coagulating bath and washed with deionized water to obtain finished product.