System for treating contaminated groundwater

Details System for treating contaminated groundwater System for treating contaminated groundwater

1992-03-03

1994-11-08

Upton, Christopher

Liquid purification or separation

Processes

Treatment by living organism

210719, 210720, 210721, 210747, C02F 158, C02F 164

Patent

active

053623940

ABSTRACT:
A system for treating groundwater contaminated with acidity or other contaminants is disclosed. The system involves excavating a trench into the aquifer in the path of the contaminant plume, and placing a body of active material in the trench. The active material depends on the particular contaminant: organic carbon may be used when the contaminant is ferrous sulphate, or hexavalent uranium oxide, or dissolved nitrate; pyrite or elemental iron may be used when the contaminant is e.g. chromium oxide. The active material causes the contaminant to transform or break down by chemical reaction into harmless precipitates and substances.

REFERENCES:
patent: 4122012 (1978-10-01), Vlasnik
patent: 4401569 (1983-08-01), Jheveri et al.
patent: 4473477 (1984-08-01), Beall
patent: 4576717 (1986-03-01), Collin et al.
patent: 4683064 (1987-07-01), Hallberg et al.
patent: 4839051 (1989-06-01), Higa
patent: 5057227 (1991-10-01), Cohen

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