Preparation method of asymmetric filter pipe membranes and application device

The invention provides a preparation method of asymmetric filter pipe membranes and an application device and belongs to the technical field of sewage disposal. The asymmetric filter pipe membranes are prepared from polyethylene, polyvinyl chloride, an antioxidant, a lubricant, a plasticizer and a rare earth oxide additive. The application device used as a filter element includes a water collection tank, a circulating sewage pipeline, a filter and a water production box; the filter is separately connected to the water collection tank and the water production box through the circulating sewagepipeline; the part, connected to the water collection tank, of the circulating sewage pipeline is provided with a check valve and a ball valve; the part, connected to the water production box, of thecirculating sewage pipeline is provided with a damper, the check valve, the ball valve, a water pump and a Y-shape pipe. The filter is internally provided with a tank body, the asymmetric filter pipemembranes, upper sealing co