Anaerobic tank for sewage treatment

The utility model relates to the technical field of anaerobic tanks, in particular to a sewage treatment anaerobic tank, which comprises a cleaning component, the cleaning component comprises an anaerobic tank body, a motor is fixedly connected to the rear side of the anaerobic tank body, the front end of a rotating shaft of the motor extends to the rear side of the inner wall of the anaerobic tank body and is fixedly connected with an L-shaped rod, and the L-shaped rod is fixedly connected with the cleaning component. Rectangular frames are fixedly connected to the left side and the right side of the bottom surface of the inner wall of the anaerobic tank body, two long rods are slidably connected to the side surfaces of the inner walls of the rectangular frames, long frames are fixedly connected to the opposite sides of the two long rods, and the side surfaces of the inner walls of the long frames are slidably connected to the side surfaces of vertical rods of L-shaped rods. According to the utility model, t