Device for treating sewage of air compressor

The utility model discloses a device for treating sewage of an air compressor, and belongs to the field of sewage treatment. The device comprises a shell, and a water-gas separator, a deposition box,a separation box, a fine filter and a water accumulation box which are positioned in the shell, an upper end inlet of the shell is communicated with an upper end inlet of the water-gas separator, andan exhaust port is formed in the upper end; a liquid outlet in the lower end of the water-gas separator is communicated with an inlet in the top of the deposition box; the deposition box lower-end outlet is communicated with the separation box lower-end inlet; an upper end inlet of the fine filter is communicated with an upper end outlet of the separation box. According to the utility model, sewage discharged by the air compressor can be subjected to secondary treatment; under the condition that the air compressor breaks down and a large amount of engine oil is discharged, sewage can be effectively separated from compr