Metal Treatment Chemistries
Ursus has the expertise to test a variety of proprietary and non-proprietary technologies to stabilize heavy metals, and treat co-mingled metal and organic wastes.
A summary of some chemistries Ursus is proficient in using includes:.
EnviroBlend ® is a family of treatment chemicals, custom-blended to render metal-bearing wastes non-hazardous. The EnviroBlend family of treatment reagents typically treats lead, cadmium, arsenic, chromium, selenium, antimony and more. The technology results in stable compounds that reduce metal leaching in all reasonable disposal settings. EnviroBlend ® is effective for soil and groundwater remediation, industrial process waste stream treatment, or lead paint abatement.
Pozzolanic materials consist of a host of chemistries including Portland Cement, Cement Kiln Dust (CKD), and lime. These materials stabilize the waste, reduce free liquids, and provide physical integrity. The chemical properties of hydrating pozzolanic chemistries are used to lower the solubility of toxic contaminants in the waste. These materials are used to remediate contaminated soil, sediment or sludge at sites. Pozzolanic chemistries can be applied to a variety of contaminants including heavy metals, PCBs, and oil.
Phosphates have been shown to significantly reduce leaching levels of heavy metals in soils, groundwater, sediment, sludge, and industrial wastes. Phosphates form stable metal-phosphate compounds that are stable under a wide pH range and under normal disposal conditions. Phosphate chemistries treat a variety of heavy metals including lead and cadmium.
Redox chemistries range from reduced forms of sulfur, reduced forms of metal salts to organic oxidizers. The purpose of the chemistry is to convert redox sensitive metals such as hexavalent chromium, arsenic, and selenium to stable forms that reduce leaching under normal disposal conditions. This family of chemistries can be applied to contaminated soil, groundwater and wastes.
Various combinations of treatment chemistries can be applied depending on the material treated, contaminant levels and combination of metal contaminants.
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