도시쓰레기 소각로 비산재 용융결정화 및 용출특성

Crystallization of the Fly Ash from Municipal Incinerator

  • 이혜문 (한국기계연구원 열유체환경연구부 연소환경기계그룹) ;
  • 김우현 (한국기계연구원 열유체환경연구부 연소환경기계그룹) ;
  • 이정규 (한국기계연구원 열유체환경연구부 연소환경기계그룹)
  • 발행 : 2001.12.20

초록

These days, interest in the leaching of hazardous heavy metals to consist of incinerator fly ash is increasing, because the heavy metals that leach from the incinerator fly ash pollute the soil and ground water. Therefore this study was undertaken to crystallize the fly ash and prevent the leaching of hazardous heavy metals from fly ash. The concentrations and the leaching concentration of hazardous heavy metals(Cd, Cr, Hg, Pb, Zn) in the law incinerator fly ash have been measured. The fly ash was melted with two kinds of flux($Na_2CO_3, CaCO_3$) and its add quantity(0, 1, 2, 3 wt%). The crystal structure of melting materials was analyzed by SEM(Scaning Electron Microscope) and X-RD(X-Ray Diffractometer). The leaching test of melting materials was undertaken. And the relation between crystallization of melting materials and flux and leaching concentration. These experiments indicate that the concentration and leaching concentration of heavy metals in incinerator fly ash was much higher than the regulatory standard for leachates in Korea and U.S.A and average concentration of heavy metals in soil. And the crystal structure was better.

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