Printing and dyeing wastewater treatment device

The utility model discloses a treatment device for printing and dyeing wastewater. The utility model relates to the technical field of wastewater treatment, in particular to a wastewater treatment device, which comprises a box body, two ends of the box body are respectively provided with a liquid inlet end and a liquid outlet end, an oil coating roller arranged along the width direction of the boxbody is rotatably connected in the box body, the rotating direction of the oil coating roller rotates towards the liquid outlet end, and the oil coating roller is incompletely immersed in waste liquid in the box body; the top of the box body is connected with an oil collecting tank arranged in the width direction of the box body through a supporting rod, the oil collecting tank is arranged in a Vshape and located on the side, close to the liquid discharging end, of the oil coating roller, and the side wall, close to the oil coating roller, of the oil collecting tank is tightly attached to anon-immersed area of the oi