Patent US4518507A successfully refreshed from Google Patents.
US4518507A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for chemically solidifying and encapsulating hazardous wastes in one continuous operation
Assignee: Chem-Technics Inc
•
Filing: 1983-09-13
•
Granted: 1985-05-21
•
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 14:30
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.
References Cited (Backward Citations)
US1546360A
Cited
US2260064A
Cited
US2292231A
Cited
US3466841A
Cited
US3837872B1
Cited
US3837872A
Cited
GB1312343A
Cited
US3721060A
Cited
US3650298A
Cited
US3763621A
Cited
GB1427998A
Cited
US3938300A
Cited
DE2359214A1
Cited
US3908336A
Cited
US4004398A
Cited
US4292711A
Cited
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 |