Patent ID: 11925905
Assignee: BEIJING BAOSHENGTONG INTERNATIONAL ELECTRIC ENGINEERING TECHNOLOGY CO., LTD.
Field: Chemical engineering (Chemistry)
Classification: CPC B  Y | IPC B

Claim 10:
11. The method of preparing for a forward osmosis membrane of claim 10, wherein the thickness of the support mesh is 30 μm or 50 μm or 70 μm, the mesh size is 100 meshes or 120 meshes or 150 meshes; used after a pre-cleaning treatment, the pre-cleaning treatment comprises: soaking the polyester mesh respectively in a solution with 10% of sodium hydroxide by volume and a solution with 2% of hydrochloric acid by volume for one hour to remove impurities adsorbed on the surface and then rinsing with a deionized water, then drying for the next step use; the thickness of the initial forward osmotic membrane prepared by the film scraper machine is from 30 μm to 100 μm.