| abstract |
The invention belongs to the technical field of water treatment membranes, and discloses a preparation method of a chlorine-resistant antibacterial low-pressure polyamide composite nanofiltration membrane. For a certain period of time, remove the residual aqueous phase solution, then immerse it in the organic phase solution to carry out a polymerization reaction, remove the residual organic phase solution, and form a nascent polyamide composite nanofiltration membrane, and then the nascent polyamide composite nanofiltration membrane is formed. The membrane is immersed in the polypeptide amino acid aqueous solution for surface grafting treatment, and the treated polyamide composite nanofiltration membrane is washed with water to obtain the final product. The invention significantly improves the separation selectivity, chlorine resistance and antibacterial property of the polyamide composite nanofiltration membrane; meanwhile, the preparation process is simple, the operability is strong, the process conditions are easy to control, and the invention has broad industrial application prospect. |