What is the working pressure of the hollow fiber ultrafiltration membrane?

2020-09-15

When choosing the working environment pressure of the hollow fiber ultrafiltration membrane, in addition to the compressive strength of the membrane and the shell, the compactness of the membrane and the pollution resistance of the membrane should also be considered. The higher the pressure, the greater the influence of the water permeability. At this time, the more trapped substances form and accumulate on the surface of the membrane, the greater the resistance coefficient, which will cause the attenuation of the water permeability. In addition, the particles entering the pores of the membrane are also prone to block the development channels.

How to clean the hollow fiber ultrafiltration membrane?

2020-09-15

The raw water in the hollow fiber ultrafiltration membrane flows under pressure outside or in the cavity of the hollow fiber, and constitutes an external pressure type and an internal pressure type respectively. Ultrafiltration is a dynamic filtration process in which the captured material can be removed with concentrated water without blocking the membrane surface, and it can run continuously for a long time. Hollow fiber ultrafiltration membrane is one of the earlier developed polymer separation membranes. Now let us understand how to clean the hollow fiber ultrafiltration membrane?