Introduction and characteristics of hydrophilic membrane

Introduction and characteristics of hydrophilic membrane


hydrophilic membrane is a kind of ultrafiltration membrane, which can filter some harmful substances in water. This membrane can filter water under very small pressure.

The industrial application of hydrophilic membrane is very extensive, and it has become one of the new chemical unit operations. Used in separation, concentration, purification of biological products, pharmaceutical products and food industry; also used in terminal treatment devices in blood treatment, wastewater treatment and ultrapure water preparation. In my country, the concentration and purification of Chinese herbal medicines have been successfully carried out by using hydrophilic membranes. With the advancement of technology, the ultrafiltration membrane's screening function will be improved and strengthened, and its contribution to human society will also become greater and greater.
Non-hydrophilic ultrafiltration hydrophilic membrane During the mass transfer process of filtration, colloid, oil, protein and other pollutants adhere to the surface of the membrane in cake form, which is difficult to clean through simple backwashing. Non-hydrophilic membrane High operating pressure and high frequency of chemical cleaning;
However, during the mass transfer process of the hydrophilic ultrafiltration membrane, colloids, oils, proteins and other pollutants coalesce into spherical shapes on the surface of the membrane. Such spherical aggregates are easily separated from the membrane surface. The backwash of the hydrophilic ultrafiltration membrane can be cleaned, the operating pressure of the hydrophilic ultrafiltration membrane is low and the frequency of chemical cleaning is low.