Economic and Environmental Geology (자원환경지질)

The Korean Society of Economic and Environmental Geology (대한자원환경지질학회)
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A Study of Heavy Metal Equilibria in Acid Mine Drainage Receiving Stream

광산배수 수용하천의 중금속이온 평형에 관한 연구

  • Kim, Jin-Beom (Division of Environmental and Biological Engineering, Kangwon National University) ;
  • Jun, Sang-Ho (Dept. of Environmental Science, Kangwon National University) ;
  • Kim, Hee-Jong (Dept. of Environmental Science, Kangwon National University)
  • Received : 1996.10.31
  • Published : 1996.12.31
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Abstract

Heavy metal equilibria in the Dongnam stream which receives the wastewater from mining activities are investigated to provide some basic data for the management of small stream with acid mine drainage. Saturation, undersaturation, and supersaturation of some heavy metal ions with respect to some mineral phases are evaluated by saturation index (logIAP/Ksp). The $Al^{3+}$ activities showed equilibrium with $AIOHSO_4$ solid phase below a pH of 6.0. The $Fe^{3+}$ activities appeared to be controlled by Fe $(OH)_{3(amorphous)}$ solid phase below a pH of 4.0. $Zn^{2+}$ activities appeared to be regulated by $ZnCO_3$ solid phase above a pH of 6.8. Some heavy metal activities appeared to be depended upon the pH.

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