MBR (Membrane Bioreactor) for sewage treatment

The utility model relates to the technical field of sewage treatment, and discloses an MBR (Membrane Bioreactor) for sewage treatment, which comprises a treatment tank, a fixed plate fixedly connected to the surface of the treatment tank, a transmission rod rotatably connected to the side wall of the fixed plate, a winding roller fixedly connected to one end of the transmission rod, a cable wound on the surface of the winding roller, and a servo motor fixedly connected to the side wall of the fixed plate, a power output end of the servo motor is fixedly connected with one end of a transmission rod, a membrane frame is hung at the tail end of a cable, an mbr membrane group is fixedly connected to the inner side wall of the membrane frame, a shell is fixedly connected to the upper surface of the membrane frame, a reciprocating mechanism is arranged in the shell, and an aeration mechanism is arranged on the bottom wall of an inner cavity of the treatment tank; according to the utility model, the biological membr