Ultra-filtration (UF) is a membrane separation technique that cleans and separates solutions. Anti-pollution PVDF ultrafiltration membrane uses polymer material polyvinylidene fluoride as the main film raw material, PVDF membrane itself has strong oxidation resistance, after special material modification and has good hydrophilicity, in the process of membrane through scientific micropore design and micropore structure control, micropore pore size reaches the ultrafiltration level. This kind of membrane products have the advantages of uniform pores, high filtration accuracy, high water penetration per unit area, oxidation resistance and high tensile strength.The workflow of UF water treatment system generally includes the following steps: 1. Raw water: Import the raw water source to be treated into the device. 2. Pretreatment: The original water is pretreated by quartz sand filter and activated carbon filter and other equipment, and the larger impurities are filtered. 3. Ultrafiltration: the pre-treated water is entered into the UF membrane component, and the water is filtered and separated through the ultrafiltration membrane to remove tiny particles, organic matter, bacteria, viruses, etc. 4. Flushing: In the process of ultrafiltration, in order to avoid premature plugging of membrane components, it is necessary to wash the membrane components regularly to clean unnecessary impurities. 5. Water production: After several ultrafiltration and washing treatment, the production of purified water with high water quality requirements. 6. Drainage: During the production process, the membrane components will gradually accumulate suspended matter, organic matter and other impurities, which need to be drained regularly to eliminate these impurities, and clean the membrane components with fresh water.Early industrial UF/ultrafiltration was applied to wastewater and sewage treatment. For more than 30 years, with the development of ultra filtration technology, nowadays, the application of UF membrane technology has been very wide, including food industry, beverage industry, dairy industry,biological fermentation, biological medicine, pharmaceutical chemicals, biological preparations, traditional Chinese medicine preparations, clinical medicine, printing and dyeing wastewater, food product industrial wastewater treatment, resource recovery and environmental engineering, electronic industry water in the preparation of pure water, ultra-pure water and so on.1. Large ultrafiltration membrane components using the world famous membrane company products, to ensure that customers get the world's best quality organic Membrane element to ensure retention performance and membrane flux; 2. High recovery rate of large system, excellent product quality, can realize efficient separation, purification and high multiple concentration of materials; 3. There is no phase change in the process of large-scale treatment, which has no adverse effect on the components in the material, and the separation, purification and concentration process Always in normal temperature state, especially suitable for the treatment of heat-sensitive substances, completely avoid high temperature to biological activity This disadvantage of material destruction can effectively retain the biological active substances and nutrients in the raw material system; 4. The large UF water treatment system has low energy consumption and short production cycle. Compared with the traditional process equipment, the operation cost of the equipment is low and can be effectively reduced production cost, improve the economic benefits of enterprises; 5. Advanced system technology design, high degree of integration, knot citrate compact ling, covers less area, easy operation and maintenance ,low labor intensity of workers; 6. The large system is made of sanitary pipe valves, which are clean and hygienic on site and meet the requirements of GWP or FDA production specifications; 7. The large control system can be customized according to the specific requirements of users, combined with advanced control software, on-site ,on-line centralized monitoring of important process operation parameters, avoid manual misoperation, multi-directional to ensure long-term stable operation of the system.