News
10
2022
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10
Working principle and application scope of inorganic ultrafiltration membrane
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Inorganic ultrafiltration membrane disposal process, due to the capture of impurities in the membrane surface from time to time accumulation, will attack the concentration of polarization. When the solute concentration of inorganic ultrafiltration membrane reaches a certain limit, the gel layer is produced, which makes the water immersion of the membrane drop sharply, so that the application of ultrafiltration is limited to a certain level. Therefore, in the use of inorganic ultrafiltration membrane, should always pay attention to the maintenance and cleaning of inorganic ultrafiltration membrane.
Inorganic ultrafiltration membrane with pressure difference as the driving force of the membrane filtration method for ultrafiltration membrane filtration. Most ultrafiltration membranes are made of cellulose acetate fibers or polymer materials with similar properties. It is suitable for the separation and concentration of solutes in solution, and is often used for the separation of colloidal suspensions that are difficult to be separated by other separation techniques.
In the selection process, the pressure difference on both sides of the inorganic ultrafiltration membrane is the driving force, and the inorganic ultrafiltration membrane is the filter medium. Under a certain pressure, when the dope flows through the surface of the membrane, many micropores densely scattered on the surface of the ultrafiltration membrane only allow water and small molecules to pass through and become permeate, while the substances in the dope with a volume larger than the micropores on the surface of the membrane are trapped on the inlet side of the membrane and become concentrate, thus completing the purification, separation and concentration of the dope.
After the inorganic ultrafiltration membrane is used, due to the gradual accumulation of Chinese separation-based material culture and other impurities on the surface of the membrane, the formation of environmental pollution and infarction on the membrane, the effective stop cleaning of the membrane is an important technical means to extend the life of the membrane network. Commonly used cleaning methods have chemical cleaning, physical cleaning two categories.
Inorganic ultrafiltration membrane should be able to clean at any time, and the relevant enterprise product information of ultrafiltration membrane should be used to stop data cleaning, so that we can clean the harmful chemicals such as scale, residual chlorine, heavy metals and the like left by ultrafiltration membrane filtration, and prolong the application cycle of membrane. To be in the legal rules of the time to stop the film in a timely manner to change.
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