Hydraulic and earth engineering – Soil remediation – In situ contaminant removal or stabilization
Patent
1992-01-21
1995-10-10
Taylor, Dennis L.
Hydraulic and earth engineering
Soil remediation
In situ contaminant removal or stabilization
210170, 210747, 405 52, 588249, B03B 300
Patent
active
054565502
ABSTRACT:
A permeable wall (4) is located in the material of an aquifer (2), in the path of an approaching plume (3) of a contaminant (eg a chlorinated solvent). The wall comprises a body (7) of permeable filler material, eg sand and gravel, which is placed in a trench (5) that has been cut down into the aquifer material. Biologically-aided breakdown of the contaminant is aided by the presence of nutrients in the groundwater, and injection ports (18) are provided in the wall, through which the nutrients are injected periodically. The permeability of the wall helps the injected nutrients to spread laterally through the plume. The injected substances are contained in a volume of water; this water may be water which has been extracted from the trench, draw-off wells (9) being provided in the trench for that purpose. A second permeable wall (29) may be provided downstream for injection of eg air.
REFERENCES:
patent: 4288174 (1981-09-01), Laws
patent: 4469176 (1984-09-01), Zison et al.
patent: 4543016 (1985-09-01), Tallard
patent: 4678582 (1987-07-01), LaVigne
patent: 4687372 (1987-08-01), Thornton
patent: 4850745 (1989-07-01), Hater et al.
patent: 4982788 (1991-01-01), Donnelly
patent: 5057227 (1991-10-01), Cohen
patent: 5076727 (1991-12-01), Johnson et al.
patent: 5180503 (1993-01-01), Gorelick et al.
patent: 5249888 (1993-10-01), Byaithwaite et al.
patent: 5384048 (1995-01-01), Hazen et al.
Taylor Dennis L.
University of Waterloo
LandOfFree
Procedure for delivering a substance into an aquifer does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Procedure for delivering a substance into an aquifer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Procedure for delivering a substance into an aquifer will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2306787