Ultrafiltration water treatment is a method of water purification using membrane separation technology, which can remove particles, colloids, bacteria and other impurities in water. Ultrafiltration (UF) is an efficient technology that uses ultrafiltration membranes accurate to less than 0.01 microns to purify water. This technology can allow water molecules and some small molecules of solute through the filter membrane, and large molecules such as suspended solids, some colloids and microorganisms, so as to achieve the purpose of purification. The ultrafiltration system usually includes raw water system, ultrafiltration host, cleaning system and dosing system, etc. These components work together to effectively complete the purification treatment of water quality.

Ultrafiltration water treatment system
The composition of the ultrafiltration system is more complex, which is basically composed of raw material liquid, water pump, water storage device, feed pump, filtrate, bag filter, hollow fiber ultrafiltration membrane, local instrument, dosing system, automatic control system, rack platform and other parts. Among them, the choice of pretreatment device is customized according to different raw water conditions, common pretreatment devices include multi-media filters, security filters, etc., to ensure that the water entering the membrane component meets the requirements to prevent membrane pollution.

Characteristics of ultrafiltration water treatment system
Efficient filtration: UF ultrafiltration system can effectively remove particles, colloids, bacteria, heat sources and organic matter from water, providing high-quality water production.
Energy saving: Generally UF ultrafiltration equipment does not require the use of high pressure pumps during operation, so the energy consumption is relatively low.
Easy maintenance: Due to fewer joints and low water pressure, the failure rate and leakage probability of the equipment are relatively low, and it is more convenient to maintain.
High cost effectiveness: UF ultrafiltration system is simple to operate, low cost, and does not need to add chemical reagents, which is conducive to reducing operating costs.
In summary, UF ultrafiltration membrane system has the advantages of high filtration accuracy, good hydrophilicity, high mechanical strength, strong chemical resistance and oxidation resistance, strong washable ability, strong adaptability, etc., so it has been widely used in water treatment, beverage processing, wastewater treatment and other fields.

Application field of ultrafiltration water treatment system
Drinking water treatment: Ultrafiltration technology is used to remove suspended matter, organic matter, bacteria and viruses from water to improve the quality of drinking water. Globally, about 60% is used for drinking water treatment.
Industrial water treatment: In the large industrial sector, ultrafiltration technology is used to treat industrial water to remove impurities that may affect product quality, accounting for about 18%.
Water, sewage and wastewater treatment and reuse: Ultrafiltration technology also plays an important role in water reuse and wastewater treatment, helping to reduce environmental pollution and improve the recycling rate of water resources, accounting for about 15%.
Food, beverage and pharmaceutical industries: In these industries, ultrafiltration technology is used in the process of bacteria removal, turbidity removal, pyro removal and concentration to ensure the purity and safety of products, and other light industries such as electronics, textiles, printing and dyeing, paper making, etc., also occupy a certain proportion, about 7%.
Desalination: Ultrafiltration technology is also used in the desalination process to help reduce salt and other impurities in seawater to obtain fresh water resources.

Ultrafiltration operation principle (UF) is mainly based on membrane separation technology, it is a physical separation process using semi-automatic membrane with a certain aperture as filtration media. Under the action of the external pressure, when the liquid compound flows through the ultrafiltration membrane, the water molecules are smaller than the membrane aperture, solvent molecular and some small molecular material can go through the membrane hole smoothly, While molecular materials are bigger than the film aperture, colloidal particles, creatures, pests, etc. Blocked at the top of the membrane, thereby achieved the purity, separation, or concentration of solution. The specific process is as follow:
1. Rough fluid transportation: treated fluid (such as water, solution or mud) is inserted by the inlet of Ultrafiltration System under certain pressure.
2. Separation process: when the material liquids are in contact with the ultrafiltration membrane, only components smaller than the membrane aperture are allowed to pass through due to the limit of the membrane aperture. For example, if the film aperture is 0,01-0,1 micron, then the water, ion and other small molecular materials can pass through, while bacteria, virus, large molecular organic agents, colloidal particles, etc. V. T. Blocked at one side of the membrane.
3. Through and trap: small molecular material through the film hole will form a osmosis liquid, which is ultrafiltration through liquid, usually more pure; meanwhile, The electrolytes left by the film are stored at the highest side of the film, become concentrate or called ultrafiltration fluid.
4. Cleaning and reborn: with additional operating time, the ultrafiltration membrane surface can have sedimentation, absorbency, and even scale, resulting in the loss of membrane flow, Thus it is required to regularly clean chemicals or backflow to revert the separation performance of the membrane.

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