Isolation of soil with a frozen barrier prior to conductive...

Details Isolation of soil with a frozen barrier prior to conductive... Isolation of soil with a frozen barrier prior to conductive...

E - Fixed Constructions

02

D

E02D 19/14 (2006.01) B09C 1/00 (2006.01) B09C 1/02 (2006.01) B09C 1/06 (2006.01) B09C 1/08 (2006.01) B09C 1/10 (2006.01) E02D 3/11 (2006.01) E02D 3/115 (2006.01)

Patent

CA 2463108

Freeze wells may be used to isolate an area for soil remediation. Freeze wells may form a frozen barrier around a treatment area. The frozen barrier may inhibit fluid from entering into the treatment area. The frozen barrier may also inhibit migration of contamination out of the treatment area. The frozen barrier may be used to surround all of the perimeter of the treatment area. A frozen barrier may also be formed above or below a treatment area. Freeze wells may be activated in advance of soil remediation so that a frozen barrier is formed when soil remediation is begun. The soil remediation may be accomplished by any type of soil remediation system, including a thermal soil remediation system. Heaters of a thermal soil remediation system may be may be placed close to the frozen barrier without the barrier being broken through during remediation.

L'invention concerne l'utilisation éventuelle d'un puits de congélation pour isoler un sol voué à la réhabilitation, l'objectif étant de former une barrière de congélation autour de la zone du sol traitée. Ladite barrière peut empêcher l'entrée de fluide dans la zone traitée, empêcher la migration des contaminants hors de la zone traitée, et ceinturer entièrement le périmètre de cette zone. On peut aussi établir une barrière de congélation au-dessus ou au-dessous de la zone traitée. L'activation d'un puits de congélation peut être une étape préalable à la réhabilitation du sol, permettant de disposer d'une barrière de congélation lorsque la réhabilitation débute. La réhabilitation peut être conduite selon un système quelconque, y compris la réhabilitation thermique. Les installations chauffantes utilisées dans le cadre d'un système de réhabilitation thermique peuvent être proches de la barrière de congélation, sans risque de rupture de la barrière au cours de la réhabilitation.

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