Commonly used several membrane separation method of sewage treatment

Commonly used several membrane separation method of sewage treatment:

A, ultrafiltration membrane separation method. According to the shape and different properties of molecules using the role of atmospheric pressure, it will be effective screening and separation. This technology through our country's years of research and use, decontamination effect is remarkable, can effectively bing the sewage in the original body. Therefore, the ultrafiltration membrane separation technology in China's various sewage treatment is widely used.

Two, nanofiltration membrane separation method. In the mid to late 1970s the formation of the nanofiltration membrane separation technology is to ensure that the separation of inorganic salts are not affected by the potential and chemical gradient, through the role of (the actual pressure is less than or equal to 1.5MPa) will be about 1 nanometer diameter molecules are effectively screened and separated, so as to achieve the effect of sewage treatment.

Three, liquid membrane separation method. In the 1960s was proposed until the mid to late 1980s has been widely used liquid membrane separation technology, divided into emulsion membrane and support liquid membrane, which emulsion liquid membrane in sewage treatment technology is widely used. Fourth, membrane bioreactor. That is, the raw water in the bioreactor and biological biologically occurring after the full reaction, the use of circulation pumps, so that the water flow through the membrane components, the water is discharged at the same time as the biological phase and re-flow into the bioreactor, the technology is through the membrane parts and bioreactors for the combination of a new type of decontamination technology.