Acid mine drainage formation, control and treatment: Approaches and strategies
The Extractive Industries and Society(2019)
摘要
•Acid mine drainage (AMD) is a worldwide concern in coal and metal mining.•Mine planners must predict AMD potential before disturbance.•If AMD is predicted, planners must install control measures such as spoil handling plans, alkaline amendment, and covers.•Treatment of AMD uses chemicals such as Ca(OH)2, CaO, NaOH, Na2CO3, and NH3. It is costly, requires equipment and facilities, and often extends for decades.•Passive treatment of AMD is effective under certain flow and acidity conditions, and includes wetlands, anoxic limestone drains, open limestone channels, and alkaline leach beds.
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关键词
Acid-base accounting,Acid-producing material,Alkaline leach bed,Anoxic limestone drains,Chemical treatment,Open limestone channels,Passive treatment,Wetlands
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