provides the required treatment methods for Hg>260 ppm through the
use of the VTD at M&EC which qualifies as a retorting process (RMERC).
Current EPA LDRs mandate technology-based treatment of high mercury
(>260 mg/kg total Hg) organic-bearing and inorganic wastes.
Incineration (IMERC) and Retorting (RMERC) are the currently approved
technologies for treatment of high mercury waste. Radioactive
elemental mercury in virtually the liquid form must be treated via amalgamation
(AMALG); however, solid wastes contaminated with elemental mercury are
subject to the aforementioned IMERC and RMERC treatment standards.
Mercury contaminated debris may be treated using the LDR alternative
debris treatment (i.e., macro-/micro-encapsulation or sealing). Thermal
retorting (RMERC) systems, the more available technology, thermally
volatilizes mercury and captures it via condensation. The recovered
radioactive mercury can then be stabilized by amalgamation.