Oil-water separation sewage treatment device

The utility model relates to the technical field of oil-water separators, in particular to an oil-water separation sewage treatment device, which can automatically dump residues and impurities to replace the traditional manual carrying and dumping operation mode, so that the operability of the device is improved. Comprising a bottom plate, an oil-water separator body, a fixing box, a special-shaped filter hopper, two rotating shafts, a driving assembly, a backwashing assembly and a collecting assembly, the oil-water separator body is fixedly installed on the upper end face of the bottom plate, the fixing box is fixedly installed on the upper end face of the oil-water separator body, and the two rotating shafts are symmetrically and fixedly installed on the front end face and the rear end face of the special-shaped filter hopper; the two rotating shafts penetrate through and are rotationally mounted on the front end face and the rear end face of the fixed box respectively, the two first synchronizing wheels ar