What is the structure of Dow SW30HRLE-440i seawater desalination reverse osmosis membrane?

Dow SW30HRLE-440i is a reverse osmosis membrane suitable for brackish water desalination. It can adapt to water quality with medium salt content in raw water. Dow reverse osmosis membranes are well-known in the industry and their performance is quite stable. This is due to Dow's fully automated production equipment. Those who have never seen the internal structure of Dow reverse osmosis membrane equipment must be very interested. Let me share with you the internal structure and filtration principle of this seawater desalination membrane.

Internal structure of Dow SW30HRLE-440i reverse osmosis membrane:

It consists of multi-leaf membrane bags. Each leaf membrane bag is composed of two film sheets facing each other. There is a water production channel between the two film sheets and a turbulent grid-shaped water inlet channel above it. membrane surface. Three sides of the film bag are sealed with adhesive, and the fourth side is open to the perforated water collection pipe. Compared with other component structures such as tube type, plate type, hollow fiber type, etc., it has the advantages of uniform water flow distribution, high pollution resistance, low replacement cost, simple external pipe lines, convenient cleaning and maintenance, and large design freedom. The current main structural form of membrane elements.