Journal of Soil and Groundwater Environment (한국지하수토양환경학회지:지하수토양환경)

Korean Society of Soil and Groundwater Environment (한국지하수토양환경학회)
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Application of a Soil Separation System for the Remediation of Arsenic Contaminated Soil in a Metal Mining Area

폐금속광산 지역의 비소오염토양 처리를 위한 선별 기술 적용

  • ParK, Chan-Oh (Institute of Technology Research, Korea Resources Corporation) ;
  • Kim, Jong-Won (Geotechnical Department, Byucksan Engineering Corporation) ;
  • Park, Jun-Hyoung (Geotechnical Department, Byucksan Engineering Corporation) ;
  • Lee, Young-Jae (Department of Earth & Environmental Sciences, Korea University) ;
  • Yang, In-Jae (Institute of Mine Reclamation Technology, Mine Reclamation Corporation) ;
  • Lee, Jai-Young (Department of Environmental Engineering, The University of Seoul)
  • 박찬오 (한국광물자원공사 기술연구원) ;
  • 김종원 (벽산엔지니어링(주) 지반사업부) ;
  • 박준형 (벽산엔지니어링(주) 지반사업부) ;
  • 이영재 (고려대학교 지구환경과학과) ;
  • 양인재 (한국광해관리공단 광해기술연구소) ;
  • 이재영 (서울시립대학교 환경공학과)
  • Received : 2013.09.30
  • Accepted : 2013.10.28
  • Published : 2013.10.31
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Abstract

After the law has been enacted for the prevention and recovery of mining damage in 2005, efforts of remediation have been started to recover heavy metal contaminated soils in agricultural land near mining sites. As part of an effort, the upper part of cultivation layer has been treated through covering up with clean soil, but the heavy metal contamination could be still spreaded to the surrounding areas because heavy metals may be remained in the lower part of cultivation layers. In this study, the most frequently occurring arsenic (As) contamination was selected to study in agricultural land nearby an abandoned metal mining site. We applied separation technologies considering the differences in the physical characteristics of soil particles (particle size, density, magnetic properties, hydrophobicity, etc.). Based on physical and chemical properties of arsenic (As) containing particles in agricultural lands nearby mining sites, we applied sieve separation, specific gravity separation, magnetic separation, and flotation separation to remove arsenic (As)-containing particles in the contaminated soil. Results of this study show that the removal efficiency of arsenic (As) were higher in the order of the magnetic separation, flotation separation, specific gravity separation and sieve separation.

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References

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