<報文>都市廃棄物の処理と資源化に関する基礎的研究(I) : E.P.灰の性状とその処理法

概要

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The treatment of municipal solid waste (MSW) has been a serious problem due to its volume and the emission of hazardous heavy metal dust when treated at incineration plants. Specifically, incineration of MSW has created air and water pollutions near the plants and dump ponds of ash and dust. Detailed characterization of incinerator ash and dust has been carried out from the view point of the utilization of MSW as a potential resources for metals and ceramics. The ash and dust treatment also makes it possible to use MSW as a combustible which might provide a promising amount of heat and electricity to save coal and oil. In this investigation, the analysis of electric-precipitator dust (E. P. Dust) were conducted by various methods, such as X-ray diffraction, IR, Mass, TGA and DTA. From those spectrophotometric analysis, the major components of E. P. Dust were found to be NaCl, KCl and K_3Na(SO_4)_2 i. e. glaserite and the minor components were various compounds of Zn, Ca, Mg, Al, Pb, Fe, Si, Cu and Ti. Also the origins of those compounds found in E. P. Dust are discussed with emphasis on glaserite mineral. Understanding the property of E. P. Dust, possible treatment processes of E. P. Dust are proposed suggesting the utilization of the dust as Na and K resources together with detoxication by the removal of Cd, Pb, Cr, As and Hg compounds.
東北大学の論文
1981-10-20