Introduction to ultrafiltration equipment

Ultrafiltration equipment is a water purification system using membrane separation technology, which is good at removing particles, colloids, bacteria and other impurities in water. This technology uses ultrafiltration membranes accurate to less than 0.01 microns, allowing water molecules and small molecular solutes to pass through, while trapping large molecular substances, such as suspended solids, certain colloids and microorganisms, so as to achieve the purpose of purifying water quality. Ultrafiltration equipment usually includes raw water system, host, cleaning system and dosing system, which work together to effectively complete water purification treatment.

Characteristics of ultrafiltration equipment

Efficient filtration capacity: It can effectively remove particles, colloids, bacteria, heat sources and organic matter from water.
Energy saving: General operation does not need to use high pressure pump, energy consumption is relatively low.
Easy maintenance: fewer joints, low water pressure, reduce equipment failure rate and maintenance difficulty.
Cost-effective: simple operation, low cost, no need to add chemical reagents, reduce operating costs.

Applications of ultrafiltration equipment

Drinking water treatment: improve the quality of drinking water, remove suspended matter, organic matter, bacteria and viruses.
Industrial water treatment: Removal of industrial water impurities that may affect product quality.
Treatment and reuse of reclaimed water, sewage and wastewater: reduce environmental pollution and improve the recycling rate of water resources.
Food, beverage and pharmaceutical industries: Ensure that products are pure and safe for sterilization, turbidity removal, pyrogen removal and concentration processes.
Desalination: The reduction of 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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