IMPROVED METHOD FOR FIXATING SLUDGES AND SOILS CONTAMINATED WITH MERCURY AND OTHER HEAVY METALS

摘要

The invention relates to a method, composition and apparatus for stabilizing mercury and other heavy metals present in a particulate material (10) such that the metals will not leach from the particulate material. The method generally involves the application of a metal reagent (20), a sulfur-containing compound, and the addition of oxygen to the particulate material (10), either through agitation, sparging or the addition of an oxygen-containing compound.