State of the Art Heavy Metal Treatment Technology and Hazardous Waste Solutions

ADT Environmental Solutions has perfected a number of alternative treatment technologies for stabilizing toxic heavy metals in soils and production waste streams. ADT's proprietary stabilization systems render high levels of lead, chrome, cadmium, arsenic and other heavy metals into non- leachable, safe forms, suitable for on site disposition or off-site disposal in Subtitle D landfills or construction debris monofills. ADT's treatment technologies are effective in stabilizing metals in soils, sludge, debris, and in contaminated water.

Advantages
Standard stabilization techniques "encapsulate" or bind heavy metals to contaminated media by adding cement with pozzolonic materials. This approach adds to both volume and mass of the treated material, is difficult to apply, costs more, and has uncertain longevity. The ADT approach involves converting the physical state of the leachable metallic and oxide forms to environmentally stable mineral and other chemical forms without adding to volume or mass, and avoiding or minimizing offsite disposal costs. The technique typically results in a cost-savings of 30 to 60% over conventional techniques and treatment results are permanent.

Applications
The technology is field- proven and commercialized for stabilizing lead, cadmium, arsenic, zinc, chromium, selenium, antimony and barium. Lab scale proof of concept work is underway on mercury. Sites of application include firing ranges, metal laden sediments, mining operations, primary steel manufacturing, ash from thermal destruction and plating wastes.

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