Producing LDR Compliant Waste Forms for Mixed Wastes Debris
	The Perma-Fix Northwest facility is ideal for processing mixed wastes debris having a macroencapsulation treatment standard. It is also suitable for debris wastes listing organics for Underlying Hazardous Constituents. The Perma-Fix Northwest macroencapsulation process is approved for the Department of Energy (DOE) waste disposal in the State of Washington and is approved for DOE and commercial disposal in the State of Utah. Site specific approval for disposal at Envirocare is pending approval by Envirocare of Utah.
	The Process
	Mixed wastes are inspected and sized for placement, typically in 55-gallon drums. The drummed waste is transferred to the supercompaction area where it is loaded into the horizontal drum press and volume reduced under 1500 tons of force across the surface area of the drum, thus achieving near theoretical density of processed material. The result is a drum “puck” which has an average outgoing density of 45-50 lbs/ft³ for low density wastes and greater than 100 lbs/ft³ for higher density wastes (i.e., metals). The pucks are placed in grout-lined carbon steel boxes and void filled with grout, with the remaining void spaces filled with additional grout or an approved filler material. Average volume reduction achieved on waste is 2-3:1 because of the use of the supercompaction step. The final “macro unit” provides a waste form that meets RCRA Land Disposal Restrictions (LDR) and DOE Waste Category 3 stabilization requirements (if required) for disposal at Hanford.
	The Benefits
	Lowest cost method of macroencapsulation approved for disposal Volume reductions averaging 2-3:1 Safe handling of high dose and high activity wastes Provides LDR compliant waste form
Perma-Fix Northwest 2025 Battelle Blvd. Richland, WA 99354   Phone: 509-375-5160  Fax: 509-375-0613