Guangdong membrane production manufacturers Guangzhou filter water purification equipment company specializing in the production of various household water purifier ultrafiltration membrane and filter, the company's long-term production of RO membrane, ultrafiltration, reverse osmosis membrane and components, welcomed the mutual!
         Ultra filtration membrane is also known as the hollow fiber ultrafiltration membrane. The aperture between reverse osmosis and microfiltration, about 0.01 ~ 0.1 M, commonly used as a water system after treatment device, can be used to intercept solutions of various particles, large molecules, bacterial, virus, pyrogen. Ultrafiltration membrane aperture is formed by certain molecular weight substances being tested, and the molecular weight of the numerical representation, can remove pyrogen in the ultrafiltration of molecular weight is usually 6000 Dalton ( Dalton ).
Membrane structure
Membrane structure are symmetric and asymmetric division. The former is isotropic, no cortex, all directions of the pore are the same, which belongs to the deep bed filtration; the latter has a dense surface and refers to the shape structure consisting mainly of bottom, surface layer thickness of 0.1 microns or less, and has ordered microporous, layer thickness of 200 to 250 microns, which belongs to the surface filtration. Industrial use of the membrane is generally asymmetric membrane. Ultrafiltration membrane materials are mainly of cellulose and its derivatives, polycarbonate, polyvinyl chloride, poly vinylidene fluoride, polysulfone, polyacrylonitrile, polyamide, polysulfone amide, sulfonated polysulfone, cross-linked polyvinyl alcohol, modified acrylic polymer.
      Ultrafiltration sieving process, with film on both sides of the pressure difference as the driving force, the membrane as the filter medium, under a certain pressure, when the liquid flows through the surface of the membrane, ultrafiltration membrane surface with many small pores allow only water and small molecules pass through and become liquid, and liquid volume larger than the membrane surface micro pore material is trapped on the membrane liquid inlet side, become concentrated liquid, thus realizing the liquid purification, separation and enrichment purpose. Every metre of ultrafiltration membrane tube wall is about 6000000000 0.01 micron microporous, the aperture only allows water molecules, the useful minerals and trace elements in water by bacteria, while the smallest volume in more than 0.02 microns, so bacteria and bacterial volume than the much larger colloid, rust, suspended matter, sediment, macromolecule organic matter can be ultrafiltration membrane to intercept, thereby realizing the purification process

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     On the pressure as a driving force for membrane filter can distinguish for ultrafiltration membrane filter, microporous membrane filtration and reverse osmosis membrane filter three. The difference between them is based on the film layer can retain minimum particle size or the size of molecular weight. The film rated aperture range as the distinction between standard, then microporous membrane ( MF ) rated aperture range from 0.02 to 10 m; ultrafiltration ( UF ) is 0.001 ~ 0.02 M; reverse osmosis membrane ( RO ) is 0.0001 ~ 0.001 M. Therefore, the most suitable for ultrafiltration membrane treatment solution of solute separation and enrichment, or using other separation techniques are difficult to accomplish in the colloidal suspension separation. Ultra filtration membrane membrane technology, namely the expected size and narrow distribution micro-hole technology is extremely important. Hole control factors, such as making membrane solution according to the type and concentration, evaporation and condensation conditions as diverse as it can get different pore size and pore size distribution of the ultrafiltration membrane. Ultra filtration membrane for polymer separation membrane for ultrafiltration membrane, polymer materials are mainly cellulose derivatives, polysulfone, polyacrylonitrile, polyamide and polycarbonate. Ultrafiltration membrane can be made flat film, roll film, the tubular membrane and hollow fiber membrane form, widely used as pharmaceutical industry, food industry, environmental engineering.