광산배수 내 철에 의한 하천 황화현상을 촉진하는 환경조건 연구
Study on Environmental Conditions Leading to Acceleration of Yellowboy Formation in Streams by Iron in Mine Drainage
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초록
국내 광산배수 내 철 배출허용기준(2 mg/L)을 만족하는 경우에도 수계 하류에서는 철 침전물로 구성된yellowboy가 나타난다. 이 연구에서는 철 침전물 형성에 미치는 pH, 온도, 용존 주성분 양이온, 하상물질, 철산화균의 영향을 연구하였다. 저농도 철에 의한 철 침전 및 침전된 철의 탈착 실험도 수행하였다. 철 침전은 높은pH, 고온, Ca 2+이 우세한 조건, 하상퇴적물 및 철산화균의 존재 하에서 증진되었다. 저농도(1 mg/L) 철이 함유된경우에도 철 침전이 발생함을 관찰하였으며, 자연처리시설의 돌발적인 월수 등에 의하여 하상 퇴적물에 철 침전물이 발생하면 용이하게 제거되지 않는 것으로 판단된다.
Abstract
Though Fe concentration in mine drainage and treated water is lower than Korean water quality criteria (2 mg/L), the yellowboy mainly composed of Fe precipitates often occurs in lower streams. In this study, the effects of pH, temperature, dissolved major cations, stream bed materials, and Fe oxidizing bacteria on yellowboy formation were investigated. Experiments on Fe precipitation with low concentrations of Fe and washing of precipitated Fe were also conducted. Yellowboy production was accelerated under the conditions with high pH, high temperature, Ca 2+ as a dominant major ion, and the presence of stream bed materials and Fe oxidizing bacteria. Even low concentration of Fe (1 mg/L) led to formation of yellowboy. In addition, it was found that, once Fe precipitates formed by abrupt operational accidents of passive treatment systems, they might not readily be detached from stream bed.
참고문헌 (16)
- Drever, J.I, "The Geochemistry of Natural Waters", pp.436~ (1997), Prentice Hall
- Hove, M, "The effect of different types of seeds on the oxidation and precipitation of iron", Hydrometallurgy, 97, pp.180~184 (2009)
- Johnson, D.B, "Pitfalls of passive mine water treatment", Rev. Environ. Sci. Biotechnol, 1, pp.335~343 (2002)
- Jőnsson, J, "Precipitation of secondary Fe(III) minerals from acid mine drainage", Appl. Geochem, 21, pp.437~445 (2006)
- Jung, M.C, "Investigation and evaluation of soil and water contamination from abandoned mines", J. Mine Reclamation Technology, 1(1), pp.26~34 (2007)
- 정명채, "국내 휴폐금속광산의 환경오염 평가 및 향후 관리 방안", 한국자원공학회지, 43(5), pp.383~394 (2006), 한국자원공학회
- Kim, J.J, "Seasonal factors controlling mineral precipitation in the acid mine drainage at Donghae coal mine, Korea", Sci. Tot. Environ, 325, pp.181~191 (2004)
- Laus, R, "Reduction of acidity and removal of metal ions from coal mining effluents using chitosan microspheres", J. Haz. Mater, 149, pp.471~474 (2007)
- Lee, J.S, "Hydrogeochemical characteristics of acid mine drainage in the vicinity of an abandoned mine, Daduk Creek, Korea", J. Geochem. Expl, 88, pp.37~40 (2006)
- Liang, L, "Chemical aspects of iron oxide coagulation in water: Laboratory studies and implications for natural systems", Aquat. Sci, 52(1), pp.32~55 (1990)
- McCauley, C.A, "Sulfate and metal removal in bioreactors treating acid mine drainage dominated with iron and aluminum", Wat. Res, 43, pp.961~970 (2009)
- Park, C.Y, "Seasonal variation of heavy metal content in acid mine drainage from Kwangyang mine", J. Korean Institute of Mineral and Energy Resources Engineers, 36(1), pp.91~102 (1999)
- Park, C.Y, "Geochemistry of the yellowboy", J. Korean Institute of Mineral and Energy Resources Engineers, 36(3), pp.299~312 (1999)
- Rőtting, T.S, "Field application of calcite dispersed alkaline substrate (calcite-DAS) for passive treatment of acid mine drainage with high Al and metal concentrations", Appl. Geochem, 23, pp.1660~1674 (2008)
- Singer, P.C, "Acidic mine drainage: The rate-determining step", Science, 167, pp.1121~1123 (1970)
- Stookey, L.L, "Ferrozine - A new spectrophotometric reagent for iron", Anal. Chem, 42, pp.779~781 (1970)