Information Circular 9389: Passive Treatment of Coal Mine Drainage

Details

• Personal Author:
  Hedin, Robert S. ; Kleinmann, Robert L. P. ; Narin, Robert W.
• Description:
  Passive methods of treating mine water use chemical and biological processes that decrease metal concentrations and neutralize acidity. Compared with conventional chemical treatment, passive methods generally require more land area, but use less costly reagents and require less operational attention and maintenance. Currenlty, three types of passive technologies exist: aerobic wetlands, organic substrate wetlands, and anoxic limestone drains. Aerobic wetlands promote mixed oxidation and hydrolysis reactions, and are most effective when the raw mine water is net alkaline. Organic substrate wetlands promote anaerobic bacterial activity that results in the precipitation of metal sulfides and the generation of bicarbonate alkalinity. Anoxic limestone drains generate bicarbonate alkalinity and can be useful for the pretreatment of mine water before it flows into a wetland. [Description provided by NIOSH]
• Subjects:
  Coal Coal Mining Environment Environmental Exposure Environmental Pollution Metals Mining Occupational Health Poisoning Safety
• Keywords:
  Environmental-contamination Environmental-pollution Environmental-protection Metal-compounds Metal-poisoning
• Series:
  Mining Publications
• Subseries:
  Information Circular
• Document Type:
  Text
• Genre:
  Report
• Place as Subject:
  OSHA Region 3 ; Pennsylvania
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  52 pdf pages
• NIOSHTIC Number:
  nn:10012349
• NTIS Accession Number:
  PB94-173341
• Citation:
  USBM 1993 Oct; :1-35
• Federal Fiscal Year:
  1994
• Peer Reviewed:
  False
• Source Full Name:
  Bureau of Mines
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:9623e01757beb3c5413ddbf7fc6b44fe6d909f39dad2cdcd8745a98c376c36657ea1a793268656a52f1cb279d249a4fd98ff400f53f327400fe242fd8f41992b
• Download URL:
  https://stacks.cdc.gov/view/cdc/206331/cdc_206331_DS1.pdf
• File Type:
  [PDF - 3.42 MB ]