Filter membrane for sewage treatment

The utility model relates to the technical field of filtering membranes, in particular to a filtering membrane for sewage treatment, which comprises a rectangular pipe, a rectangular frame is inserted and mounted in the rectangular pipe, a pull buckle is mounted on the outer side of the rectangular frame, a short plate is rotationally connected to the side face of the rectangular pipe, one end of the short plate abuts against the side face of the rectangular frame, a filter membrane main body is mounted on one side in the rectangular frame, and a plurality of filter holes are formed in the filter membrane main body. The rectangular pipe, the rectangular frame, the short plate, the filter membrane main body, the filter holes, the square plate with the holes and the needle head are arranged, and the short plate rotationally mounted on the side surface of the rectangular pipe is propped against the side surface of the rectangular frame, so that the rectangular frame is prevented from falling off; a plurality of