Ultrafiltration is a membrane separation technology, (UItrafil-tration referred to as UF). It can purify, separate or concentrate solutions. Ultrafiltration is between microfiltration and nanofiltration, and there is no obvious dividing line between the three. Generally speaking, the pore size of an ultrafiltration membrane is 0.05 um–1 nm, operating pressure 0.1–0.5 Mpa. It is mainly used to intercept and remove suspended solids, colloids, particles, bacteria, viruses and other macromolecules in water. Ultrafiltration membranes can be divided into organic membranes and inorganic membranes according to the membrane appearance. Currently, household ultrafiltration water purifiers can be divided into flat type, tubular type, capillary type, and hollow fiber type. , mostly hollow membranes [[[DTI18N_TAG_3]]
