Viscous waste liquid feeding system

The invention relates to the field of hazardous waste treatment, in particular to a viscous waste liquid feeding system which comprises a feeding device, a waste liquid temporary storage device, a conveying device and a waste liquid spray gun, the feeding device comprises an elevator and a feeding barrel, and the feeding barrel is detachably arranged in the elevator; wherein the waste liquid temporary storage device comprises a stock bin, a bin material filter and a mixer, the bin material filter is detachably arranged at the bottom end of the stock bin, and the mixer is fixedly arranged at the bottom end of the bin material filter; wherein the feeding device comprises a material pressing device, a waste liquid pump and a pipeline, one end of the material pressing device is fixedly connected to the outlet end of the mixer, and the other end of the material pressing device is fixedly connected to the inlet of the waste liquid pump; one end of the pipeline is fixedly connected to an outlet of the waste liquid p