Ultra-filtration is a pressure driven membrane separation technology. The aim of the technology is to separate macromolecules and small molecules whose membrane pore size is between  20-1000A. Hollow Fiber Ultra-filter has the advantages of high density and compact structure.

In the ultra filtration process, the water depth is driven by hydraulic pressure and flows through the membrane surface. The ultra filtration process is a dynamic filtration,separation is accomplished in the mobilization state. Solute in the membrane surface is only a limited deposition, the ultra filtration rate to a certain degree of attenuation tends to balance, and can be restored by cleaning.

   Advantages and disadvantages:
      Ultra-filtration technology is easily to be supplied and the cost is low. Meanwhile, it doesn't need any chemical reagents. As a result, the temperature and the PH value of the material can't be changed. In the preparation of biological macromolecules, the UF is mainly used for the desalination of biological macromolecules, dehydration and enrichment. Ultra filtration also has certain limitations. It can not be directly changed into dry powder formulation. For the protein solution, generally we can only get 10-15% concentrations.

Application:

 It applied for drinking mineral water, spring water, industrial ultra-filtration water and pre-pretreatment of pure water facilities.