Movable sewage pretreatment device

The invention relates to a mobile sewage pretreatment device, comprising a main sewage inlet pipe, a grating canal, an oil separation tank and an adjusting tank, wherein the main sewage inlet pipe isconnected with a water inlet of the grating canal, a water outlet of the grating canal feeds water into the oil separation tank through a inflow water lifting pump on a water outlet pipe, a settling bin and an oil removal bin are arranged in the oil separation tank, the settling bin communicates with the oil removal bin through an opening, an oil collecting tank is arranged on one side of the oilremoval bin, a slag collecting tank is arranged on one side of the settling bin, a water outlet of the oil separating tank is connected with a water inlet of the adjusting tank through a regulating pipeline, a water outlet of the adjusting tank is connected with a water outlet pipeline, a water outlet pump is arranged on the water outlet pipeline, and high-performance water purification films arearranged at the water outle