| 摘要 |
<p>PROBLEM TO BE SOLVED: To solve such social and environmental problems that dioxins are contained in flue gas generated at a refuse incineration installation or the like and are conventionally removed by a method to atomize active carbon into a flue and thereby adsorb and remove the dioxins contained in the flue gas and in order to treat waste active carbon in which the dioxins are adsorbed, the dioxins need to be decomposed by heating the waste active carbon in an oxygen shortage state under a sophisticated airtight atmosphere and further, a special installation for keeping the oxygen deficient state is required with unavoidable large investment in facilities and high maintenance cost therefor. SOLUTION: This method for treating the waste active carbon in which the dioxins are adsorbed is characterized in that at least one kind selected from the group of a phosphorus compound, an aluminum compound and a calcium compound is added to the waste active carbon in which the dioxins are adsorbed and this mixture is heated and treated at 200-600 deg.C.</p> |
