Vehicle-mounted sewage separating and purifying device

The utility model relates to a vehicle-mounted sewage separating and purifying device and belongs to the technical field of general cleaning operation. The vehicle-mounted sewage separating and purifying device comprises a sewage tank and a clean water tank, wherein the sewage tank is communicated with the clean water tank by a pipeline; the pipeline is provided with a sewage pump for pumping sewage in the sewage tank; a crude filter is arranged at one end, communicated with the sewage tank, of the pipeline; one end, communicated with the clean water tank, of the pipeline, is provided with a centrifugal filter; a water returning opening of the centrifugal filter is communicated with the sewage tank. The vehicle-mounted sewage separating and purifying device can be used for rapidly, efficiently and simply purifying sewage and realizing recycle of the sewage loaded in an environmental sanitation clean-keeping vehicle.