Ultra-filtration (UF) is a membrane separation technology that can purify and separate solutions. Ultrafiltration membrane system is a solution separation device with ultrafiltration membrane filament as the filtration medium and the pressure difference between the two sides of the membrane as the driving force. The ultrafiltration membrane only allows the solvent (such as water molecules), inorganic salts and small molecules of organic matter in solution to pass through, while retaining large molecules such as suspended solids, colloids, proteins and microorganisms in the solution, so as to achieve the purpose of purification or separation.
Ultrafiltration is a membrane separation process with sieving as the separation principle and pressure as the driving force, the filtration precision is within the range of 0.005-0.01μm, which can effectively remove particles, colloids, bacteria, heat sources and macromolecular organic substances in water. It can be widely used in separation, concentration and purification of substances. The ultrafiltration process has no phase transformation, operates at room temperature, and is especially suitable for the separation of heat-sensitive substances. It has good resistance to temperature, acid and alkali, and oxidation, and can be used continuously for a long time under the conditions of below 60℃ and pH 2-11. Ultrafiltration membrane is divided into plate and frame type (plate type), hollow fiber type, nano-membrane table ultrafiltration membrane, tube type, roll type and other structures according to the structure type. Among them, hollow fiber ultrafiltration membrane is a more mature and advanced form of ultrafiltration technology. Hollow fiber outer diameter of 0.4-2.0mm, inner diameter of 0.3-1.4mm, hollow fiber tube wall is covered with microporous, pore size in order to be able to intercept the molecular weight of the material expression, the molecular weight of the intercepted molecules can reach several thousand to several hundred thousand. Raw water flows under pressure in the outer or inner cavity of the hollow fiber, which constitutes the outer and inner pressure hollow ultrafiltration membranes respectively. Ultrafiltration is a dynamic filtration process, the retained substances can be excluded with the concentrate without blocking the membrane surface, and can be operated continuously for a long time. Early industrial ultrafiltration was applied to wastewater and sewage treatment. Over the past three decades, with the development of ultrafiltration technology, today's ultrafiltration membrane technology has a wide range of applications, including the food industry, beverage industry, dairy industry, bio-fermentation, biopharmaceuticals, pharmaceuticals, pharmaceutical chemicals, biologics, traditional Chinese medicine, clinical medicine, printing and dyeing wastewater, food industry wastewater treatment, resource recycling, as well as environmental engineering and so on.
A. The ultrafiltration membrane elements are made of domestic or imported membrane company products, which ensures that the customers get the higher quality organic membrane elements at present, thus ensuring the retention performance and membrane flux.
B. The system has a high recovery rate and the products obtained are of good quality, which can realize the separation, purification and high concentration of materials.
C. There is no phase change in the treatment process, which does not have any adverse effect on the constituents of the materials, and the separation, purification and concentration process is always at room temperature, which is especially suitable for the treatment of heat-sensitive substances, completely avoiding the disadvantage of high temperature on the destruction of biologically active substances, and effectively retaining the biologically active substances and nutrients in the original material system.
D. Low energy consumption of the system, short production cycle, compared with the traditional process equipment, equipment running costs are low, can effectively reduce production costs and improve the economic efficiency of enterprises.
E. The system has advanced process design, high degree of integration, compact structure, small footprint, easy operation and maintenance, and low labor intensity of workers.
F. The system is made of sanitary pipe and valve, which is clean and hygienic and meets the requirements of GMP or FDA production specifications.
G. The control system can be customized according to the user's specific requirements, combined with advanced control software, on-site on-line centralized monitoring of important process parameters, to avoid manual misoperation, multi-directional to ensure the long-term stability of the system operation.
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