Water treatment ultrafiltration membrane and preparation method thereof

The invention relates to the technical field of water treatment, in particular to a water treatment ultrafiltration membrane and a preparation method thereof.The ultrafiltration membrane comprises a three-layer structure, a supporting layer is a supporting membrane, a coating layer is a filtering membrane, the supporting membrane is a polyethersulfone porous membrane, and the filtering membrane is a polymeric membrane prepared from a polymeric material and basalt fibers through an electrostatic spinning method. The basalt fibers are modified basalt fibers. The invention aims to solve the problems in the background art that the fatigue resistance is poor, the flux of the membrane is obviously reduced along with the use time and the service life is greatly shortened after a filtering membrane made of polysulfone is used for a long time, and the ultrafiltration membrane with a three-layer structure is adopted, so that the mechanical property of the ultrafiltration membrane can be improved, and the service life o