Freeze Concentration of Pinkwater

The freeze concentration process was evaluated as a method of concentrating munitions wastes. A bench-scale study was conducted at the U.S. Army Cold Regions Research and Engineering Laboratory (CRREL) using pinkwater obtained from McAlester Army Ammunition Plant (AAP) in McAlester, Oklahoma. A spec...

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Bibliographic Details
Main Authors: Martel, C. J., Taylor, Susan, Maloney, Stephen W.
Other Authors: ENGINEER RESEARCH AND DEVELOPMENT CENTER HANOVER NH COLD REGIONS RESEARCH AND ENGINEERING LAB
Format: Text
Language:English
Published: 2002
Subjects:
Ammunition and Explosives
Water Pollution and Control
*AMMUNITION
*HAZARDOUS WASTES
*TNT
WASTE WATER
COLD REGIONS
FREEZING
CONCENTRATION(COMPOSITION)
ORDNANCE
BENCH TESTS
*FREEZE CONCENTRATION
*PINKWATER
MUNITIONS WASTE
Cold Regions Research and Engineering Laboratory
Online Access:http://www.dtic.mil/docs/citations/ADA398637
http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA398637
Description
Summary:The freeze concentration process was evaluated as a method of concentrating munitions wastes. A bench-scale study was conducted at the U.S. Army Cold Regions Research and Engineering Laboratory (CRREL) using pinkwater obtained from McAlester Army Ammunition Plant (AAP) in McAlester, Oklahoma. A special apparatus was constructed that allowed a sample to be frozen at a constant freezing rate. Six runs were conducted at different freezing rates. The results of this study show that the freeze concentration process is capable of meeting a 1.0 mg/L TNT discharge permit limit in the meltwater. However, the rate of freezing must be very slow to meet this criterion. An alternative would be to conduct multi-stage freezing at a higher freezing rate. Calculations show that the TNT limit could be achieved in six freezing cycles at 10 mm/hr. The original document contains color images.

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