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About ultrafiltration membrane for Ultrafiltration Water Treatment System
The key to ultrafiltration is the membrane. Membranes come in various types and specifications. A number of anisotropic asymmetric ultrafiltration membranes have been produced in recent years. One type of anisotropic diffusion membrane consists of a very thin, porous "skin layer" with a certain pore size (approx. 0.1mm to 1.0mm thick) and a much thicker, more porous "sponge layer" as a support (approx.1mm). The skin layer determines the membrane selectivity, while the spongy layer increases the mechanical strength. Because the skin layer is very thin, it is efficient, permeable, has a large flow rate, and is not easy to be blocked by solute and lead to flow rate decrease. Commonly used membranes are usually made of acetic acid fibers or nitric acid fibers or a mixture of both. In order to meet the needs of sterilization in pharmaceutical and food industry, non-fibrous anisotropic membranes such as polysulfone, polysulfone amide and polyacrylonitrile have been developed recently. The membrane is stable at pH 1 ~ 14 and can work normally at 90ºC. Ultrafiltration membranes are generally stable and can last for 1 to 2 years if used properly. No need for the time being, can be soaked in 1% formaldehyde solution or 0.2%NaN3. The basic performance indexes of ultrafiltration membrane are as follows: water flux [CM3 /(cm2? H)]; Rejection rate (expressed as percentage %); Chemical and physical stability (including mechanical strength).
Have you learned about the nine application fields of ultrafiltration membrane?
1, in the preparation of pure water and ultra-pure water process, as reverse osmosis pretreatment and ultra-pure water terminal treatment.
2, industrial water for the separation of bacteria, heat source, colloid, suspended matter, macromolecular organic matter, etc.
3, purify urban drinking water, purify mineral water. Ultrafiltration membrane technology can realize the inactivation and purification of microorganisms and fungi in drinking water and the purification of micron suspended particles. Ultrafiltration membrane technology can effectively remove nano particles and improve the quality of effluent water, which is of great significance to the drinking water health of urban residents.
4, fermentation, enzyme preparation industry, pharmaceutical industry concentration, purification and clarification. Concentration and separation of fruit juice.
5, soybean, dairy products, sugar industry, wine, tea juice, vinegar separation, concentration and clarification.
6. Purification and recycling of domestic sewage. Ultrafiltration membrane technology can achieve the standard treatment of urban sewage, because of the good biodegradability of urban sewage, the combined use of cyclic activated sludge (CASS) and ultrafiltration membrane technology can effectively improve effluent quality in practical work.
7, food processing wastewater, electroplating wastewater, oil wastewater and other industrial wastewater treatment.
8. It is used for separation, concentration and purification of biological products, pharmaceutical products and food industry, and has been increasingly used for concentration and purification of Traditional Chinese medicine.
9. Terminal treatment device for blood treatment, waste water treatment and ultrapure water preparation.
Technical Specifications of Ultrafiltration Water Treatment System
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UF System |
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Model |
JFUF-100T |
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Host Size |
can be customized |
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Operating Pressure |
0.1-0.3MPa |
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Recovery Rate |
85% |
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Rack Material |
SUS304/Carbon Steel (Optional) |
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Pipe Material |
U-PVC/ Stainless steel (Optional) |
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Ultra-filtration Membrane |
PVC/PAN/PVDF (Optional) |
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Raw Water Pump |
CNP/NYP |
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Tank Material |
SS/FRP(Optional) |
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Outlet Flow |
100t/h |
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Power Supply |
220V /380V/460V - 50Hz/60Hz,220V 50Hz can be customized |
Applications of Ultrafiltration Water Treatment System
A, ultrafiltration in pure water, ultra-pure water and other water treatment applications: boiler supply water, industrial high pure water, medical pure water, food water and other treatment.
B, the application of ultrafiltration in industrial wastewater reuse treatment: the treatment and reuse of circulating water, cooling water, injection water, collection water and other industrial wastewater of petroleum, chemical industry, steel mill, power plant, electroplating, printing and dyeing.
C, the application of ultrafiltration in the field of special separation and concentration: milk concentration, protein concentration, enzyme products concentration, starch recovery, electrophoresis paint recovery, vinegar clarification.
D, the application of ultrafiltration in drinking water: mineral water, pure water, food and beverage water, tap water, rural drinking water treatment.
Used for making ultra-pure water in electronic industry, injection in pharmaceutical industry, purification of various industrial water and drinking water purification. In the food industry, dairy products, juice, wine, spices, such as production using ultrafiltration technology step by step, such as milk or whey protein and low molecular weight of lactose and separation of water and fruit juice clarification and to disinfect, wine colored protein, polysaccharide and other colloidal impurities removal, etc., the bacteria removal in the soy sauce, vinegar, is a traditional method shows the advantages of economic, reliable, and ensure the quality.
Flow chart of Ultrafiltration Water Treatment System
Raw water + original water tank + original water pump + sand filter + carbon filter + security filter + UF system + pure water tank + UV sterilizer (ozone generation)+ precision filter + water supply point
Development history of Ultrafiltration Water Treatment System
The origin of ultrafiltration. In 1748, Schmidt used a cotton gum membrane or a celluloid membrane to separate the solution. When a certain pressure was applied, the solution (water) passed through the membrane, while proteins, colloids and other substances were trapped. In the 1960s, the concept of molecular weight was put forward, which was the beginning of modern ultrafiltration. In the 1970s and 1980s, the ultrafiltration developed rapidly, and began to mature after the 1990s. In our country, the research on this technology is relatively late, it is still in the research period in the 1970s, and only at the end of the 1980s, it enters the stage of industrial production and application.
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