Journal of the Korean Society of Mineral and Energy Resources Engineers (한국자원공학회지)

The Korean Society of Mineral and Energy Resources Engineers (한국자원공학회)
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Current Occurrence and Heavy Metal Contamination Assessment of Seepage from Mine Waste Dumping Sites in Korea

국내 광산폐기물 적치장 침출수 발생 현황 및 중금속 오염도 평가

  • 박창구 (세종대학교 에너지자원공학과) ;
  • 김정욱 (세종대학교 에너지자원공학과) ;
  • 정명채 (세종대학교 에너지자원공학과) ;
  • 박현성 (한국광해관리공단 기술연구센터 수질토양기술팀) ;
  • 김동관 (한국광해관리공단 기술연구센터 수질토양기술팀) ;
  • 오연수 (한국광해관리공단 기술연구센터 수질토양기술팀)
  • Received : 2018.11.20
  • Accepted : 2018.12.20
  • Published : 2018.12.31
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Abstract

This study has focused on evaluation of heavy metal contamination in seepage from 23 mine waste dumping sites in Korea. Seepage samples from the sites were taken and analyzed for heavy metals. The maximum levels (mg/L) in the samples were Al 53.98, As 16.19, Cd 1.15 Cu 37.30, Fe 28.64, Mn 39.00, Ni 0.097, Pb 0.750, and Zn 80.18. Among the sites, six mines were selected as continuous monitoring sites. As results of three months' monitoring of the sites, over the water guidelines for As, Cd, Cu, Fe, Mn, Zn and Al in seepage samples were found at two abandoned Au-Ag mines, Cd, Mn, Zn and Al at two Pb-Zn mines, and As, Fe and Mn at two other Fe-W mines. Therefore, those six mines need continuous monitoring on contamination assessment of seepage due to mining activities.

이 연구에서는 국내에 분포하는 광산폐기물(광물찌꺼기, 폐(광)석) 적치장의 침출수 유출 현황을 조사하고 중금속 오염도를 평가하였다. 현장답사 시 채취한 23개소의 적치장 침출수 미량원소 분석결과 원소별 최대함량(mg/L)은 Al 53.98, As 16.19, Cd 1.15 Cu 37.30, Fe 28.64, Mn 39.00, Ni 0.097, Pb 0.750으로 검출되었다. 모니터링 대상 적치장 6개소의 침출수를 3개월간 분석한 결과, 주요 개발광종에 따라 2개소의 금-은광산에서는 As, Cd, Cu, Fe, Mn, Zn 및 Al, 2개소의 연-아연광산에서는 Cd, Mn, Zn 및 Al, 2개소의 기타광종(중석, 철) 개발광산에서는 As, Fe, Mn이 지속적으로 수질환경기준을 초과하는 높은 함량이 유출되고 있음을 확인하였다. 그러므로 이들 6개 광산폐기물 적치장에서 배출되는 침출수에 대한 지속적인 모니터링이 필요하다.

Keywords

Acknowledgement

Grant : 광산폐기물 적치장별 침출수 현황조사 및 특성규명

Supported by : 한국광해관리공단

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