Bioremediation process using liquefied petroleum gas
AssigneeCamp, Dreser & McKee, Inc.
InventorsPatrick J. Evans, Karl Hopfensperger
Life of this patent
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Abstract
A method is provided for stimulating anaerobic degradation of a subsurface contaminant, comprising the steps of vaporizing liquefied petroleum gas (LPG) to form a treating gas and directing the treating gas to at least one subsurface injection site that includes the subsurface contaminant; wherein the treating gas stimulates anaerobic degradation of at least a portion of the subsurface contaminant.
Claims33
A method of stimulating anaerobic degradation of a subsurface contaminant, comprising the steps of:
- a) vaporizing liquefied petroleum gas (LPG) to form a treating gas;
- and
- b) directing the treating gas to at least one subsurface injection site that includes the subsurface contaminant;
- wherein the treating gas stimulates anaerobic degradation of at least a portion of the subsurface contaminant.
A method of stimulating anaerobic degradation of a subsurface contaminant, comprising the steps of:
- a) vaporizing liquefied petroleum gas (LPG);
- b) mixing the vaporized LPG with a carrier gas to form a treating gas having an LPG component;
- and
- c) directing the treating gas to a subsurface injection site that includes the contaminant;
- wherein the treating gas stimulates anaerobic degradation of at least a portion of the contaminant.
A method of stimulating anaerobic degradation of a subsurface contaminant, comprising the steps of:
- a) vaporizing liquefied petroleum gas (LPG);
- b) mixing the vaporized LPG with one or more supplemental gaseous electron donors to form a treating gas having an LPG component;
- and
- c) directing the treating gas to a subsurface injection site that includes the contaminant;
- wherein the treating gas stimulates anaerobic degradation of at least a portion of the contaminant.
A method of stimulating anaerobic degradation of a subsurface contaminant, comprising the steps of:
- a) vaporizing liquefied petroleum gas (LPG);
- b) mixing the vaporized LPG with a carrier gas and one or more supplemental gaseous electron donors to form a treating gas having an LPG component;
- and
- c) directing the treating gas to a subsurface injection site that includes the contaminant;
- wherein the treating gas stimulates anaerobic degradation of at least a portion of the contaminant.
A method of stimulating anaerobic degradation of a subsurface perchlorate contaminant, comprising the steps of:
- a) vaporizing liquefied petroleum gas (LPG);
- b) mixing the vaporized LPG with a carrier gas to form a treating gas having an LPG component;
- and
- c) directing the treating gas to a subsurface injection site that includes at least one perchlorate contaminant;
- wherein the treating gas stimulates anaerobic degradation of at least a portion of the perchlorate contaminant.
A method of stimulating anaerobic degradation of a subsurface perchlorate contaminant, comprising the steps of:
- a) vaporizing liquefied petroleum gas (LPG);
- b) mixing the vaporized LPG with one or more supplemental gaseous electron donors to form a treating gas having an LPG component;
- and
- c) directing the treating gas to a subsurface injection site that includes at least one perchlorate contaminant;
- wherein the treating gas stimulates anaerobic degradation of at least a portion of the perchlorate contaminant.
A method of stimulating anaerobic degradation of a subsurface perchlorate contaminant, comprising the steps of:
- a) vaporizing liquefied petroleum gas (LPG);
- b) mixing the vaporized LPG with a carrier gas and one or more supplemental gaseous electron donors to form a treating gas having an LPG component;
- and
- c) directing the treating gas to a subsurface injection site that includes at least one perchlorate contaminant;
- wherein the treating gas stimulates anaerobic degradation of at least a portion of the perchlorate contaminant.
A method of preconditioning a vadose zone for perchlorate reduction comprising the step of reducing an oxygen concentration by directing vaporized liquefied petroleum gas (LPG) to the vadose zone.
Dependencies are inferred from the claim text.