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US5039415A Expired / Lapsed US ⏱️ 0.0 years remaining

Decontamination of hydrocarbon contaminated soil

Assignee: Individual
•
Filing: 1990-04-23
•
Granted: 1991-08-13
•
Expires: 2010-04-23
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Abstract

Abstract The method of treating hydrocarbon contaminated soil that includes forming the soil into a flowing particulate stream; forming an aqueous liquid mixture of water and treating substance that reacts with hydrocarbon to form CO 2 and water; dispersing the liquid mixture into the particulate soil stream to wet the particulate; allowing the substance to react with the wetted soil particulate to thereby form CO 2 and water, whereby the resultant soil is beneficially treated.

Inventors

  • 👤 Alvin J. Smith

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-30 17:19
CPC Classifications
C; C02; C02F; C02F3/00; C02F3/34; B; B09; B09C; B09C1/00; B09C1/10

Claims Analysis

Total Claims: 11
Claim 1
Independent Claim 174 words
The method of treating hydrocarbon contaminated soil that includes: a) forming the soil into a flowing particulate stream, b) forming an aqueous liquid mixture of water and treating substance that reacts with hydrocarbon to form CO 2 and water, c) dispersing said liquid mixture into the particulate soil stream to wet the particulate, d) allowing said substance to react with the wetted soil particulate to thereby form CO 2 and water, thereby the resultant soil is beneficially treated, e) said stream being freely projected to dwell at a level and then fall, and said dispersing includes spraying the liquid mixture into the projected stream at said dwell, f) said substance consisting of natural bacteria, and at a concentration level in the mixture of between 100 to 3,000 PPM of bacteria to water, g) said soil forming step including impacting the soil to reduce it to particles less than about 3/8 inches in cross dimension, h) and including forming the wetting particulate into a first layer on a surface to allow said substance to react.
Claim 2
Independent Claim 174 words
The method of treating hydrocarbon contaminated soil that includes: a) forming the soil into a flowing particulate stream, b) forming an aqueous liquid mixture of water and treating substance that reacts with hydrocarbon to form CO 2 and water, c) dispersing said liquid mixture into the particulate soil stream to wet the particulate, d) allowing said substance to react with the wetted soil particulate to thereby form CO 2 and water, thereby the resultant soil is beneficially treated, e) said stream being freely projected to dwell at a level and then fall, and said dispersing includes spraying the liquid mixture into the projected stream at said dwell, f) said substance consisting of natural bacteria, and at a concentration level in the mixture of between 100 to 3,000 PPM of bacteria to water, g) said soil forming step including impacting the soil to reduce it to particles less than about 3/8 inches in cross dimension, h) and including forming the wetting particulate into a first layer on a surface to allow said substance to react.
Claim 3
Dependent Claim 31 words
The method of claim 1 wherein said soil originates underground, where it has been hydrocarbon contaminated in situ, including removing the in situ soil for subjecting it to said forming step.
Claim 4
Dependent Claim 13 words
The method of claim 1 including agitating the soil particles in said layer.
Claim 5
Dependent Claim 25 words
The method of claim 1 including providing a moving conveyor surface, and supporting the soil particles on said conveyor surface to be projected to dwell.
Claim 6
Dependent Claim 24 words
The method of claim 4 including discharging the wetted soil particles off the conveyor and into the air to aerate and fall, for collection.
Claim 7
Dependent Claim 37 words
The method of claim 1 wherein the bacteria are selected from the group consisting of achromobacter arthrobacter aspergillus bacillus candida cladosporium corynebacterium myrothecium nocardia punicillium phialophora pseudomonas rhodothorula streptomyces trichoderma a blend of anaerobic and facultative organisms.
Claim 8
Dependent Claim 36 words
The method of claim 1 wherein, after several hours, said first layer is mixed to form a stream of particulate, and the steps of sub-paragraph e) of claim 1 are repeated to form a second layer.
Claim 9
Dependent Claim 40 words
The method of claim 7 wherein after several hours the second layer is mixed to form a stream of particulate, and the steps of sub-paragraph e) of claim 1 are repeated using the second layer to form a third layer.
Claim 10
Independent Claim 165 words
The method of treating hydrocarbon contaminated soil that includes: a) forming the soil into a flowing particulate stream; b) forming an aqueous liquid mixture of water and treating substance that reacts with hydrocarbon to form CO 2 and water, c) dispersing said liquid mixture into the particulate soil stream to wet the particulate, d) allowing said substance to react with the wetted soil particulate to thereby form CO 2 and water, whereby the resultant soil is beneficially treated, e) said stream being freely projected to fall, and said dispersing includes spraying the liquid mixture into the projected stream, f) said substance consisting of natural bacteria, and at a concentration level in the mixture of between 100 to 3,000 PPM of bacteria to water, g) said soil forming step including impacting the soil to reduce it to particles less than about 3/8 inches in cross dimension, h) and including forming the wetting particulate into a first layer on a surface to allow said substance to react.
Claim 11
Independent Claim 165 words
The method of treating hydrocarbon contaminated soil that includes: a) forming the soil into a flowing particulate stream; b) forming an aqueous liquid mixture of water and treating substance that reacts with hydrocarbon to form CO 2 and water, c) dispersing said liquid mixture into the particulate soil stream to wet the particulate, d) allowing said substance to react with the wetted soil particulate to thereby form CO 2 and water, whereby the resultant soil is beneficially treated, e) said stream being freely projected to fall, and said dispersing includes spraying the liquid mixture into the projected stream, f) said substance consisting of natural bacteria, and at a concentration level in the mixture of between 100 to 3,000 PPM of bacteria to water, g) said soil forming step including impacting the soil to reduce it to particles less than about 3/8 inches in cross dimension, h) and including forming the wetting particulate into a first layer on a surface to allow said substance to react.

References Cited (Backward Citations)

US3951804A Cited
US4039451A Cited
US4021348A Cited
US4179375A Cited
US4336136A Cited
US4482459A Cited
US4611951A Cited
US4822490A Cited
US4849360A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1994-08-12 1995-02-11 1995-08-13 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1998-08-12 1999-02-11 1999-08-13 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2002-08-12 2003-02-11 2003-08-13 $7700.00 Window Closed / Lapsed

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