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U.S. Bureau of Mines final report: Midnite Mine water treatment studies.

Authors
Schultze-LE; Nilsen-DN; Isaacson-AE; Lahoda-EJ
Source
Reno, NV: U.S. Department of the Interior, Bureau of Mines, RI 9605, 1996 Jan; :1-58
Link
NIOSHTIC No.
20039392
Abstract
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.
Keywords
Absorption; Cost-estimates; Field-tests; Ion-exchange; Laboratory-tests; Neutralization; Precipitation-Chemistry; Radium; Sludges; Waste-treatment; Chemical-reactions; Exposure-levels
Publication Date
19960101
Document Type
Report of Investigations
Fiscal Year
1996
NTIS Accession No.
PB96-174776
NTIS Price
A05
Identifying No.
RI-9605
NIOSH Division
RERC
Source Name
Reno, NV: U.S. Department of the Interior, Bureau of Mines, RI 9605
State
NV; PA
Performing Organization
Westinghouse Electric Corporation, Pittsburgh, PA. Science and Technology Center
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