Sewage discharge tank of reactor

The utility model relates to a sewage discharge tank for a reactor, which comprises a tank body, a lower sealing head and an upper sealing head are respectively arranged at the bottom and the top of the tank body, an exhaust hole plate is arranged at the top of the inner wall of the tank body, one side of the top of the tank body is connected with a sewage inlet, an outlet of the sewage inlet penetrates through the exhaust hole plate, and a sewage outlet is arranged in the center of the bottom of the lower sealing head. A tail gas outlet is formed in the top of the upper sealing head, a flushing water inlet, a liquid level meter opening and a liquid adding opening are formed in the position, close to the bottom of the exhaust hole plate, of the outer side wall of the tank body, a support is arranged in the center of the inner bottom of the lower sealing head, and a spline shaft with the hollow interior is rotationally connected to the center line of the exhaust hole plate and the support. A stirring assembly