Sludge drying tail gas treatment system and process

The invention provides a sludge drying tail gas treatment system and process. The system comprises a vertically arranged tower body; a liquid storage tank and an overflow chamber are arranged at the bottom of the tower body; an overflow plate is arranged between the liquid storage tank and the overflow chamber; a plurality of pore plates are arranged above the liquid storage tank; each pore plateis provided with an overflow pipe; the lower pipe orifice of each overflow pipe is slightly higher than the pore plate below the overflow pipe; the distance from the pore plates to the upper pipe opening of the overflow pipe is 1/3-1/2 of the distance between the two pore plates; a liquid inlet is formed in the side wall of the uppermost pore plate; the lower pipe opening of the lowermost overflowpipe is slightly higher than the bottom plate of the liquid storage tank; an aeration disc is arranged on the bottom plate of the liquid storage tank; and the inlet of the aeration disc is connectedwith a sludge drying tail gas source, the liquid storage tank is provided with a solid phase inlet, the top of the tower body is provided with a gas phase outlet, the side wall of the overflow chamberis provided with a liquid outlet, the bottom of the overflow chamber is provided with a solid phase outlet, the liquid outlet is connected with the liquid inlet through a circulating pipeline, the liquid inlet is connected with a Fenton reagent pipeline, and the solid phase inlet is connected with an activated carbon source.