Production method of intestinal wall type heliciform hollow fiber filtering membrane

Abstract

A production method of an intestinal wall type heliciform hollow fiber filtering membrane relates to the technical field of the filtering membrane production in the filtering technology. At first, a flat composite filtering membrane is produced, then the flat composite filtering membrane and propping materials are folded, wrinkled and scrolled together, and are spirally produced into the intestinal wall type heliciform hollow fiber filtering membrane. The product has higher heat resistance, noninflammability, prominent weather aging resistance, ozone resistance, irradiation resistance, ultraviolet light resistance and excellent corrosion resistance, and is not corroded by acid, alkali, strong oxidizer and halogen at room temperature.

Description

technical field [0001] The invention relates to technical fields such as petrochemical industry, electric power, mining, metallurgy, electronics, electroplating, textile, papermaking, pharmacy, wine making, food and beverage, municipal water supply, environmental protection, sewage reuse and seawater desalination, especially the filtration technology in filtration technology. Membrane production technology field. Background technique [0002] In the industrial production process, since the crude product produced by the traditional process needs to undergo post-treatment processes such as salting out, filtration, dilution, and drying, it can be made into a finished product. Therefore, a large amount of high-color, high-COD wastewater will be produced during the entire production process. Because the ratio of BOD to COD of this kind of wastewater is small and the biodegradability is poor, so far, except for the combustion method, no effective way has been found to treat this k...

AI Technical Summary

Problems solved by technology

Due to the small ratio of BOD to COD of this type of wastewater and poor biodegradability, there is currently no effective way to treat this type of wastewater except for the combustion method.

High-concentration chemical wastewater causes serious pollution to the environment and affects the sustainable development of the dye industry. Therefore, the development of an effective dye wastewater treatment process is an urgent problem to be solved.

Although the research and development of polymer separation membranes in my country has a history of more than 30 years, due to the simple production equipment, backward technology, low technical content, and low quality of product varieties, it cannot be applied to high-precision filtration. Compared with the same industry abroad There is a clear gap