In-situ restoration of contaminated soils and groundwater

Details In-situ restoration of contaminated soils and groundwater In-situ restoration of contaminated soils and groundwater

1992-04-16

1994-06-28

Spear, Frank

Liquid purification or separation

Processes

Liquid/liquid solvent or colloidal extraction or diffusing...

210747, B01D 1104

Patent

active

053244338

ABSTRACT:
A method for removing and stabilizing in-situ soluble heavy metal contaminants in land formations which comprises introducing into said formation an aqueous remediation solution comprising naturally-occurring ions present in said formation and remediation ions. The remediation solution selectively solubilizes and mobilizes the heavy metal contaminants into solution while substantially suppressing the displacement of said naturally-occurring ions from said formation. The method is effective with heavy metals which exist in both anionic and cationic form, and may be used to treat land formations below the surface to reduce soluble heavy metal contamination to a few parts per billion.

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patent: 5013453 (1991-05-01), Walker
Handbook on In Situ Treatment of Hazardous Waste Contaminated Soils, EPA/540/2-90/002, Jan. 1990, pp. 7-31.

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