Acid mine drainage and acid rock drainage processes in the environment of Herrerías Mine (Iberian Pyrite Belt, Huelva-Spain) and impact on the Andevalo Dam

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• 作者：J. A. Grande ; R. Beltrán ; A. Sáinz ; J.C. Santos ; M. L. de la Torre and J. Borrego
• 关键词：Acid mine drainage ; Acid rock drainage ; Heavy metals ; Iberian Pyrite Belt
• 刊名：Environmental Geology
• 出版年：2005
• 出版时间：January 2005
• 年：2005
• 卷：47
• 期：2
• 页码：185-196
• 全文大小：365 KB
• 刊物类别：Earth and Environmental Science
• 刊物主题：Earth sciences
  Geology
  
• 出版者：Springer Berlin / Heidelberg
• ISSN：1432-0495

文摘

The present work describes the process of acid water discharge into the Andévalo Dam (Iberian Pyrite Belt, Huelva-Spain) starting from the interpretation of rainfall data and chemical analyses regarding pH, conductivity, metal and sulphate content in water, from a time series corresponding to the sampling of two confluent channels that discharge water into the referred dam. Statistical data treatment allows us to conclude the existence of acid mine drainage processes in the Chorrito Stream, which are translated into very low pH values and high sulphate and metal concentrations in the water coming from Herrerías Mine. On the other hand, the Higuereta Stream shows, for the same parameters, much lower values that can be interpreted as the channel response to acid rock drainage processes in its drainage basin induced by the rocky outcrops of the Iberian Pyrite Belt.