U.S. Bureau of Mines Final Report: Midnite Mine Water Treatment Studies

Details

• Personal Author:
  Isaacson, Alan E. ; Lahoda EJ ; Nilsen, D. N. ; Schultze, Lawrence E.
• Description:
  The U.S. Bureau of Mines reviewed and evaluated options for treatment of the approximately 500 millions gallons of contaminated water in flooded pits at the Midnite Mine on the Spokane Indian Reservation. While current lime treatment produces discharge quality water, the resultant sludges are radioactive, presenting a disposal problem. Of the 24 commercial processes and seven emerging technologies evaluated, none demonstrated a significant advantage over ion exchange using a strong base anion exchange resin in either laboratory or field tests. Uranium was lowered by 22 ppm to 0.2 ppb in treated water. Radium was lowered from 44 pCi/L to <1 pCi/L using a modified precipitation with BaCl2. The natural zeolite, clinoptilotite, lowered radium to 6-8 pCi/L when used as an ion exchanger. [Description provided by NIOSH]
• Subjects:
  Chemistry Occupational Health Safety Waste Management
• Keywords:
  Absorption; Cost-estimates; Field-tests; Ion-exchange; Laboratory-tests; Neutralization; Precipitation-Chemistry; Radium; Sludges; Waste-treatment; Chemical-reactions; Exposure-levels
• Series:
  Mining Publications
• Subseries:
  Report of Investigations
• Publisher:
  U.S. Department of the Interior, Bureau of Mines
• Document Type:
  Text
• Genre:
  Case Report
• Place as Subject:
  Nevada ; OSHA Region 3 ; OSHA Region 9 ; Pennsylvania
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  RERC - Reno Research Center
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  1-58
• NIOSHTIC Number:
  nn:20039392
• NTIS Accession Number:
  PB96-174776
• Citation:
  Reno, NV: U.S. Department of the Interior, Bureau of Mines, RI 9605, 1996 Jan; :1-58
• Federal Fiscal Year:
  1996
• Performing Organization:
  Westinghouse Electric Corporation, Pittsburgh, PA. Science and Technology Center
• Peer Reviewed:
  False
• Source Full Name:
  Reno, NV: U.S. Department of the Interior, Bureau of Mines, RI 9605
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:e08111b1d8ae8a20403e8378b0deccd0d8ba9fd5ca0f23ad01bef35430288b8d89697d2f23cadfcf7a6852b18b0185d22aa5f7cd11336d97b0ab696b59d8b6e4
• Download URL:
  https://stacks.cdc.gov/view/cdc/237797/cdc_237797_DS1.pdf
• File Type:
  [PDF - 2.02 MB ]