Preparation process of reverse osmosis membrane

• Main Authors: LU SHUQING, QU RUI, XU QIANGQIANG
• Format: Patent
• Language: Chinese; English
• Published: 04.01.2022
• Subjects: PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; TRANSPORTING

The invention discloses a preparation process of a reverse osmosis membrane. The preparation process comprises the following steps: immersing a polysulfone base membrane in a water phase tank 1 containing an amine monomer under the transmission of a motor, carrying out drying via an air bellow, immersing the polysulfone base membrane in a water phase tank 2 containing the amine monomer, carrying out drying again, immersing the polysulfone base membrane in an organic phase tank containing a monomer, conducting drying, and feeding the treated membrane into a post-treatment water tank. According to the invention, the two water phase tanks with the same concentration are arranged; when a membrane surface is immersed in the water phase tank 1 with a reduced concentration in a later period, the monomer adsorbed to the membrane surface is less than a set value; then the membrane surface is immersed in the water phase tank 2, and the amine monomer in the water phase tank 2 can be supplemented and adsorbed to the memb