C - Chemistry – Metallurgy – 12 – N
Patent
C - Chemistry, Metallurgy
12
N
C12N 1/26 (2006.01) C12S 99/00 (2010.01) B09C 1/10 (2006.01) C02F 3/34 (2006.01) C12P 1/00 (2006.01)
Patent
CA 2169657
First the contaminated soil is treated by spraying of an N/P type aerobic bacterial flora nutrient in an oleophililic form, and then by the addition of hay and an N/P/K type hydrophilic nutrient mixed into the soil by mechanical means. This results in a biological process which within several months lowers the soil hydrocarbon content to below 500 mg/kg. The oleophilic nutrient is preferably a micro-emulsion of the N/P salt solution type in a lipomiscible organic solvent.
Le sol contaminé est d'abord traité par épandage d'un nutriment de flore bactérienne aérobie de type N/P sous forme oléophile, puis par addition de paille et d'un nutriment hydrophile de type N/P/K enfouis par malaxage mécanique. Un processus biologique se développe qui ramène en quelques mois le teneur en hydrocarbyres en dessous de 500 mg/kg de sol. Le nutriment oléophile est préférentiellement une microémulsion de solution de sels N/P dans un solvant organique lipomiscible.
Ceca S.a.
Robic
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