Ultrafiltration is a membrane separation technique utilizing screening process, a pressure difference across the membrane as the driving force to membrane filter media, under a certain pressure, when the liquid flows through the surface of the membrane, an ultrafiltration membrane surface densely many small pores only allow water and small molecules passed into the permeate, while the liquid volume is greater than the surface pore size of the membrane material were trapped in the feed side of the membrane, become concentrated liquid, and thus realize the liquid purification, separation and enrichment purposes.
     Per meter-long silk wall UF 6 billion, about 0.01 micron pores, pore size allows only water molecules, the beneficial minerals and trace elements in the water through, while the smallest bacteria are 0.02 microns or more, bacteria and therefore much larger than the volume of colloid bacteria, rust, suspended solids, sediment, organic molecules and so be trapped down ultrafiltration, in order to achieve the purification process.
Of water flow
     Advanced water filter tube within the trade deficit, the role of water pressure on the membrane surface of many clouds 0.01 micron pores allow only water molecules through the beneficial minerals and trace elements, become purified water. The bacteria, rust, colloid, sediment, suspended solids, organic molecules and other harmful substances were trapped in the ultrafiltration membrane tubes to drain during ultrafiltration membrane flushing.