Wastewater combined treatment device and method for chip production line

The invention belongs to the field of wastewater treatment, and particularly relates to a combined wastewater treatment device and method for a chip production line. The bottom end of the wastewater tank is fixedly connected with an L-shaped block; a reaction box is fixedly connected to the horizontal plane of the L-shaped block through a spring, the side wall of the reaction box is slidably connected to the vertical inner side wall of the L-shaped block, and the reaction box is located below the waste water box; a first water outlet and a second water outlet are respectively formed in opposite positions of the bottom ends of the wastewater tank and the reaction tank; the first water outlet is opened and closed through a first switch piece, and the second water outlet is opened and closed through a second switch piece; a discharging piece is arranged at the bottom end of the reaction box; the technical problems that most of existing grinding wastewater treatment is to treat a large amount of wastewater at a t