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2016 Vol.53, Issue 3 Preview Page

Research Paper

30 June 2016. pp. 263-271
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, theeffects of pH, temperature, dissolved major cations, stream bed materials, and Fe oxidizing bacteria on yellowboyformation were investigated. Experiments on Fe precipitation with low concentrations of Fe and washing ofprecipitated Fe were also conducted. Yellowboy production was accelerated under the conditions with high pH,high temperature, Ca2+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 Feprecipitates formed by abrupt operational accidents of passive treatment systems, they might not readily bedetached from stream bed.
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, Ca2+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.
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Information
  • Publisher :The Korean Society of Mineral and Energy Resources Engineers
  • Publisher(Ko) :한국자원공학회
  • Journal Title :Journal of the Korean Society of Mineral and Energy Resources Engineers
  • Journal Title(Ko) :한국자원공학회지
  • Volume : 53
  • No :3
  • Pages :263-271