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|Title:||Freeze concentration of pinkwater|
|Authors:||Construction Engineering Research Laboratories (U.S.)|
Martel, Courtland James.
Maloney, Stephen W.
|Publisher:||Cold Regions Research and Engineering Laboratory (U.S.)|
Engineer Research and Development Center (U.S.)
|Series/Report no.:||ERDC TR ; 02-1.|
Abstract: 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.
|Appears in Collections:||Documents|