C - Chemistry – Metallurgy – 02 – F
Patent
C - Chemistry, Metallurgy
02
F
C02F 3/28 (2006.01) B09C 1/00 (2006.01) C02F 1/28 (2006.01) C02F 1/58 (2006.01) C02F 9/00 (2006.01) E03B 3/15 (2006.01) E03B 3/34 (2006.01)
Patent
CA 2062204
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 elementaliron may be used when the contaminant is eg chromium oxide. The active material causes the contaminant to transform or break down by chemical reaction into harmless precipitates and substances.
Système de traitement de l'eau souterraine contaminée par des produits acides ou autres. Ce système prévoit le creusement d'une tranchée dans la formation aquifère pour intercepter le panache de contamination, et la mise en place d'une masse d'un matériau actif dans la tranchée. La nature de ce matériau dépend dépend du contaminant à neutraliser : le carbone de nature organique peut servir contre le sulfate ferreux, l'oxyde d'uranium hexavalent ou le nitrate dissous, la pyrite ou le fer élémentaire peuvent servir contre, p. ex., l'oxyde de chrome. Le matériau actif agit de manière à ce que le contaminant soit chimiquement décomposé ou transformé en substances et en produits de précipitation inoffensifs.
Blowes David W.
Ptacek Carol Jane
Asquith Anthony
University Of Waterloo
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