Biochemical combined treatment and purification system for industrial wastewater

The utility model discloses an industrial wastewater biochemical combination treatment purification system which comprises a fixing frame, an adjusting barrel, a dosing unit and a reaction barrel, the reaction barrel comprises a conical barrel bottom, a first barrel wall and a second barrel wall, a reaction cavity is defined by the inner side of the first barrel wall, and a heat exchange cavity is defined by the inner side of the second barrel wall and the outer side of the first barrel wall; a heat exchange liquid discharge pipe is arranged at the top of the second barrel wall, a heat exchange liquid input pipe is arranged at the bottom of the second barrel wall, the top of the first barrel wall is fixedly connected with biological stuffing through a stuffing fixing frame, the stuffing fixing frame is further fixedly connected with a water supply pipe, and the water supply pipe is connected with an adjusting barrel through a first liquid supply pump. A biological filler is arranged in the conical barrel, an