EXHAUST GAS TREATMENT FOR INCINERATOR

PURPOSE:To simultaneously reduce and remove dioxin, heavy metal and NOx in exhaust gas by supplying ammonium persulfate into an incinerator when the exhaust gas is introduced from the incinerator to a dust collector through an exhaust gas discharge passage. CONSTITUTION:Wastes are incinerated by an incinerator 7, and exhaust gas of the incinerator is treated. That is, first a predetermined quantity of ammonium persulfate is fed from a hopper 1 to a storage tank 2, mixed with plant water, and prepared to aqueous ammonium persulfate solution having a predetermined concentration (5-10%). Then, this solution is fed by setting to a predetermined flow rate by a flowmeter 4, compressed air is fed by an air compressor 6, and ammonium persulfate water is sprayed in a sprayed state into the incinerator 7 by a spray nozzle 5. Thus, dioxin, heavy metal and NOx in the exhaust gas can be reduced and removed with common additive.