US4518507A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for chemically solidifying and encapsulating hazardous wastes in one continuous operation
Assignee: Chem-Technics Inc
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Filing: 1983-09-13
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Granted: 1985-05-21
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Expires: 2003-09-13
Abstract
Abstract A method of treating aqueous liquid and semi-liquid wastes to render them fit for ultimate disposal in a sedentary mass, by admixing with the waste a solidification agent, encapsulating the admixture before solidification in an elongate, pliable, tubular membrane, sealing the ends of the membrane, and allowing the admixture to set to a sedentary mass.
Inventors
- 👤 Jesse R. Conner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:57
CPC Classifications
C; C02; C02F; C02F11/00; C02F11/008; B; B09; B09B; B09B1/00; B09B3/00; B09B3/20
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
164 words
A method of treating aqueous liquid and semi-liquid wastes to render them fit for ultimate disposal in a sedentary mass in a landfill or other ultimate disposal site, comprising the steps of: admixing with the waste a solidification agent in a location proximate an ultimate disposal site; providing at the ultimate disposal site a mobile carrier means for receiving the admixture of waste and solidification agent and for disposing of the admixture at the disposal site; feeding the admixture prior to the solidification thereof axially into the hollow cylindrical core of a supply of elongate pliable, continuous tubular membrane mounted on the mobile carrier means to fill the membrane; dispensing the membrane from the core as the membrane is filled to produce a continuous length of filled membrane; disposing the filled membrane from the mobile carrier means along a path at the disposal site; sealing the ends of the membrane; and allowing the admixture to set to a sedentary mass at the disposal site.
Claim 2
Independent Claim
164 words
A method of treating aqueous liquid and semi-liquid wastes to render them fit for ultimate disposal in a sedentary mass in a landfill or other ultimate disposal site, comprising the steps of: admixing with the waste a solidification agent in a location proximate an ultimate disposal site; providing at the ultimate disposal site a mobile carrier means for receiving the admixture of waste and solidification agent and for disposing of the admixture at the disposal site; feeding the admixture prior to the solidification thereof axially into the hollow cylindrical core of a supply of elongate pliable, continuous tubular membrane mounted on the mobile carrier means to fill the membrane; dispensing the membrane from the core as the membrane is filled to produce a continuous length of filled membrane; disposing the filled membrane from the mobile carrier means along a path at the disposal site; sealing the ends of the membrane; and allowing the admixture to set to a sedentary mass at the disposal site.
Claim 3
Dependent Claim
37 words
The method of claim 1, wherein the steps of the method are performed on-site in a landfill, and further comprising the step of laying the continous filled membrane in a first generally S-shaped path in the landfill.
Claim 4
Dependent Claim
54 words
The method of claim 2, further comprising the step of layering an additional length of continuous filled membrane in a second generally S-shaped path atop of and horizontally adjacent to said first generally S-shaped path whereby when the layers are covered in the landfill, groundwater in the landfill can seep downwardly between the layers.
Claim 5
Dependent Claim
25 words
The method of claim 1, further comprising the step of concentrically encapsulating the admixture and the tubular membrane in a second elongate pliable tubular membrane.
Claim 6
Dependent Claim
21 words
The method of claim 1, further comprising the step of providing a water impervious tubular membrane for encapsulation of the admixture.
Claim 7
Dependent Claim
24 words
The method of claim 5, wherein said water impervious membrane is selected from the group consisting of polyethylene, polyvinyl chloride, styrene, and waterproof paper.
Claim 8
Dependent Claim
31 words
The method of claim 1, wherein the step of admixing with the waste a solidification agent comprises admixing a solidification agent which sets to a sedentary mass in a closed environment.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-05-20 | 1988-11-19 | 1989-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-05-20 | 1992-11-19 | 1993-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-05-20 | 1996-11-19 | 1997-05-21 | $7700.00 | Window Closed / Lapsed |