Electrokinetic soil remediation and engineering

Details Electrokinetic soil remediation and engineering Electrokinetic soil remediation and engineering

B - Operations, Transporting

09

C

B09C 1/08 (2006.01) C09K 17/00 (2006.01)

Patent

CA 2537901

An electrokinetic method for groundwater protection, soil remediation and engineering which comprises applying an electric field across an area of soil, sediment or slurry so as to generate a pH and Eh gradient and thereby promote the in situ precipitation of a stable iron-rich band. The method may be performed for the purpose of stabilisation and/or strategic dewatering/rewatering of soils, sediment and/or slurries, the improvement of the physical properties of soils and sediments for engineering purposes, the forced and directed migration of contaminated leachates, and/or electro- osmotic purging of non-polar contaminants.

L'invention concerne un procédé électrocinétique de protection des eaux souterraines, d'assainissement et d'études des sols qui consiste à appliquer un champ électrique sur la surface d'un sol, d'un sédiment ou d'une boue afin de générer un gradient de pH et de Eh, et ainsi de favoriser la précipitation in situ d'une bande stable riche en fer. Ce procédé peut être mis en oeuvre pour la stabilisation et/ou la déshydratation/réhydratation de sols, de sédiments et/ou de boues; pour l'amélioration des propriétés physiques de sols et de sédiments à des fins de recherche; pour la migration forcée et dirigée de percolats contaminés, et/ou pour l'évacuation électro-osmotique de contaminants non polaires.

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