What is ultrafiltration process？

Ultrafiltration process

1) Ultrafiltration technology is a high and new technology widely used in the field of water purification, solution separation, concentration, and extraction of useful substances from wastewater, and wastewater purification and reuse. It is characterized by simple use process, no heating, energy saving, low-pressure operation, and small area of the device.

2) Ultrafiltration (UF) pure water treatment principle: Ultrafiltration is a membrane separation process based on the principle of sieving separation and pressure as the driving force. The filtration accuracy is within the range of 0.005-0.01μm, which can effectively remove particles and colloids in the water. , Bacterial cushion and high molecular organic substances. It can be widely used in the separation, concentration and purification of substances. The ultrafiltration process has no phase inversion and is operated at room temperature. It is particularly suitable for the separation of heat-sensitive substances. It has good temperature resistance, acid and alkali resistance and oxidation resistance. It can be used continuously for a long time under the conditions of below 60℃ and pH 2-11.

3) Hollow fiber ultrafiltration membrane is the most mature and advanced form of ultrafiltration technology. The outer diameter of the hollow fiber is 0.5-2.0mm, and the inner diameter is 0.3-1.4mm. The wall of the hollow fiber tube is full of micropores. The pore diameter is expressed by the molecular weight of the material that can be retained, and the molecular weight can be cut off from thousands to hundreds of thousands. The raw water flows under pressure on the outside of the hollow fiber or in the inner cavity to form an external pressure type and an internal pressure type, respectively. Ultrafiltration is a dynamic filtration process. The retained substances can be removed with concentration without clogging the membrane surface, and it can run continuously for a long time.