Anaerobic reactor for pesticide intermediate sewage treatment

The utility model provides an anaerobic reactor for pesticide intermediate sewage treatment, which comprises an anaerobic tower, a water inlet pipe and a return pipe, the water inlet pipe is located at the top end of the anaerobic tower, and the return pipe is located at the external top of the anaerobic tower; a water distribution tank is arranged at the top end of the anaerobic tower; one end of the water inlet pipe is connected with the water distribution tank; a water distribution system is arranged at the bottom in the anaerobic tower, and a central pipe is connected between the water distribution tank and the water distribution system; an overflow weir is arranged at the top in the anaerobic tower, a three-phase separator is arranged at the bottom of the overflow weir, one end of a return pipe is connected with the overflow weir, the other end of the return pipe is connected with a water distribution tank, and a submersible sewage pump is mounted on the return pipe; the water inlet pipe and the return p