| 摘要 |
<P>PROBLEM TO BE SOLVED: To effectively reduce NOx or the like in an exhaust gas by holding wastewater to the outside a system to the minimum in treating the combustion exhaust gas. <P>SOLUTION: The combustion exhaust gas treatment system 1 is provided with: a wet type dust collector 2 for collecting water soluble constituents and dust in the combustion exhaust gas G; a catalyst tower for decomposing and removing NOx in the combustion exhaust gas G passed through the wet type dust collector 2 and/or residual organic contaminants; solid-liquid separators 6, 7 for applying solid-liquid separation to slurry discharged from the wet type dust collector 2; a mercury adsorption tower 8 for adsorbing mercury in the liquid separated by the solid-liquid separators 6, 7; an ozone catalyst tower 9 for decomposing trace dissolved components in the liquid separated by the solid-liquid separators 6, 7; and a circulation route 11 for returning the wastewater from the mercury adsorption tower 8 and/or the ozone catalyst tower 9 to the wet type dust collector 2. Additionally, the wastewater from the circulation route 11 can be supplied to a hypochlorous acid soda production device 13 for producing hypochlorous acid soda for adding to the combustion exhaust gas G introduced to the wet type dust collector 2. <P>COPYRIGHT: (C)2007,JPO&INPIT |
