一种用于分离染料与无机盐的聚酰胺膜制备方法
By treating the polyamide membrane support layer with a solution of 2,4,6-triaminopyrimidine and 1,3,5-pyromellitic acid chloride, a high-flux, stable polyamide membrane is formed, which solves the problems of low flux and poor repeatability of traditional membranes in dye wastewater treatment, and achieves efficient separation of dyes and inorganic salts and improved stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
- Filing Date
- 2024-07-26
- Publication Date
- 2026-07-17
AI Technical Summary
Traditional polyamide nanofiltration membranes have low flux in dye wastewater treatment, making it difficult to achieve efficient separation of dyes and inorganic salts. They also have poor repeatability and cannot be used stably under high pressure.
The polyamide membrane support layer was soaked and heated to crosslink with an aqueous solution of 2,4,6-triaminopyrimidine and an oil solution of 1,3,5-pyrimidinetricarboxyl chloride to form a polyamide active layer, which improved the membrane flux and separation effect, and enhanced its repeatability and stability.
The prepared polyamide membrane has high flux, can effectively separate dyes and inorganic salts, and has good chlorine resistance and antifouling properties, making it suitable for large-scale production.
Smart Images
Figure CN119236711B_ABST