US5265979A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High efficiency waste placement system for municipal landfills
Assignee: LSC Environmental Products LLC
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Filing: 1992-12-17
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Granted: 1993-11-30
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Expires: 2012-12-17
Abstract
Abstract A high efficiency waste placement and disposal method for disposing of solid waste in a landfill includes size reducing the solid waste, moisture adjusting the solid waste, placing the solid waste in a preselected geometric form thereby forming a waste pile, coating the exposed portion of the waste pile with a synthetic covering compound comprising a liquid, binder, cellulose fibers, and plastic fibers, biostabilizing the waste pile and compacting the waste pile. The waste is preferably placed in a matshaped stockpile for efficient biostabilization through sufficient aeration and moisture adjustment and compaction.
Inventors
- 👤 David L. Hansen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 12:57
CPC Classifications
C; C04; C04B; C04B28/00; C04B28/02; C04B28/04; B; B09; B09B; B09B1/00; B09B1/004; B09B3/00; B09B3/20; B09B3/25; B09B3/27; C02; C02F; C02F11/00; C02F11/008; C04B2111/00; C04B2111/00474; C04B2111/00767; C04B2111/00784; Y; Y02; Y02W; Y02W30/00; Y02W30/30; Y02W30/50; Y02W30/91
Claims Analysis
Total Claims: 31
Claim 1
Independent Claim
69 words
A method for disposing solid waste in a landfill comprising the steps of: size reducing said solid waste; moisture adjusting said solid waste; placing the solid waste in a preselected geometric form thereby forming a waste pile; coating the exposed portion of said waste pile with a synthetic covering compound comprising a liquid, a binder, cellulose fibers and plastic fibers; biostabilizing said waste pile; and compacting said waste pile.
Claim 2
Independent Claim
69 words
A method for disposing solid waste in a landfill comprising the steps of: size reducing said solid waste; moisture adjusting said solid waste; placing the solid waste in a preselected geometric form thereby forming a waste pile; coating the exposed portion of said waste pile with a synthetic covering compound comprising a liquid, a binder, cellulose fibers and plastic fibers; biostabilizing said waste pile; and compacting said waste pile.
Claim 3
Dependent Claim
11 words
The method of claim 1 further comprising aerating the waste pile.
Claim 4
Dependent Claim
25 words
The method of claim 1 wherein said reduced waste is placed in a substantially mat-shaped stockpile having a length and width substantially greater than thickness.
Claim 5
Dependent Claim
15 words
The method of claim 1 wherein said solid waste is reduced and moisture adjusted simultaneously.
Claim 6
Dependent Claim
18 words
The method of claim 1 further comprising the step of placing an aeration means within said waste pile.
Claim 7
Dependent Claim
24 words
The method of claim 5 wherein said reduced waste is placed in the mat shaped stockpile having a thickness of at least 4 feet.
Claim 8
Dependent Claim
20 words
The method of claim 1 wherein said waste is reduced to particles ranging in size from 2 to 6 inches.
Claim 9
Dependent Claim
17 words
The method of claim 1 wherein said reduced waste is moisture adjusted with a water based liquid.
Claim 10
Dependent Claim
24 words
The method of claim 1 wherein said reduced waste is moisture adjusted to yield a moisture content of 40 to 60 percent by weight.
Claim 11
Dependent Claim
37 words
The method of claim 1 further comprising the step of constructing an aeration means on a preselected location prior to placing the solid waste in a preselected geographic form at said preselected location forming said waste pile.
Claim 12
Dependent Claim
20 words
The method of claim 1 wherein said biostabilization is allowed to occur for a period of 60 to 90 days.
Claim 13
Dependent Claim
46 words
The method of claim 1 wherein the exposed portion of said waste pile is coated with a synthetic covering compound comprising by weight 30 to 60 percent liquid, 40 to 70 percent binder, one-half to 2 percent cellulose fiber and up to 2 percent plastic fiber.
Claim 14
Dependent Claim
31 words
The method of claim 10 wherein synthetic covering compound comprises by weight 38-40 percent liquid, 54-60 percent binder, 1-2 percent cellulose fibers and up to 1/10 of 1 percent plastic fibers.
Claim 15
Dependent Claim
18 words
The method of claim 13 wherein the liquid, binder, cellulose fibers and plastic fibers all are recycled material.
Claim 16
Dependent Claim
13 words
The method of claim 13 wherein said liquid is a water based liquid.
Claim 17
Dependent Claim
10 words
The method of claim 13 wherein the liquid comprises water.
Claim 18
Dependent Claim
11 words
The method of claim 13 wherein the liquid comprises landfill leachate.
Claim 19
Dependent Claim
11 words
The method of claim 13 wherein the binder comprises cement flyash.
Claim 20
Dependent Claim
11 words
The method of claim 13 wherein the binder comprises portland cement.
Claim 21
Independent Claim
79 words
A method for disposing solid waste in a landfill, comprising the steps of: reducing said solid waste; moisture adjusting said solid waste; placing the reduced waste in a set form and in a set place, thereby forming a waste pile; coating the exposed portion of said waste pile with a synthetic covering compound; biostabilizing said waste pile; compacting said waste pile; and repeating the steps above upon said set place, thereby forming a plurality of layers of compacted waste.
Claim 22
Independent Claim
79 words
A method for disposing solid waste in a landfill, comprising the steps of: reducing said solid waste; moisture adjusting said solid waste; placing the reduced waste in a set form and in a set place, thereby forming a waste pile; coating the exposed portion of said waste pile with a synthetic covering compound; biostabilizing said waste pile; compacting said waste pile; and repeating the steps above upon said set place, thereby forming a plurality of layers of compacted waste.
Claim 23
Dependent Claim
18 words
The method of claim 20 further comprising the step of placing an aeration means within said waste pile.
Claim 24
Dependent Claim
25 words
The method of claim 20 further comprising assembly an aeration means within a preselected location prior to forming a waste pile upon said preselected location.
Claim 25
Dependent Claim
15 words
The method of claim 1 wherein said biostabilization step comprises aerating the said waste pile.
Claim 26
Dependent Claim
17 words
The method of claim 23 further comprising the step of moisture adjusting said waste pile after aeration.
Claim 27
Dependent Claim
40 words
The method of claim 20 wherein said coating step comprises the steps of: mixing a binder, cellulose fibers, plastic fibers and a liquid to form a mixture; coating the waste pile with said mixture; and allowing said coating to harden.
Claim 28
Dependent Claim
29 words
The method of claim 25 wherein said mixture comprises, by weight 38-40 percent liquid, 54-60 percent binder, 1-2 percent cellulose, and up to 1/10 of 1 percent plastic fibers.
Claim 29
Independent Claim
74 words
A method of disposing solid waste in a landfill, comprising the steps of: reducing said solid waste; moisture adjusting said solid waste; providing an aeration means; placing the reduced waste in a set form over said aeration means; coating said exposed portion of said waste pile with a synthetic covering compound; biostabilizing said waste pile; compacting said waste pile; and repeating the steps above upon the set place, thereby forming a plurality of layers.
Claim 30
Independent Claim
74 words
A method of disposing solid waste in a landfill, comprising the steps of: reducing said solid waste; moisture adjusting said solid waste; providing an aeration means; placing the reduced waste in a set form over said aeration means; coating said exposed portion of said waste pile with a synthetic covering compound; biostabilizing said waste pile; compacting said waste pile; and repeating the steps above upon the set place, thereby forming a plurality of layers.
Claim 31
Dependent Claim
10 words
The method of claim 13 wherein the binder comprises flyash.
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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) | 1996-11-29 | 1997-05-31 | 1997-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-11-29 | 2001-05-31 | 2001-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-11-29 | 2005-05-31 | 2005-11-30 | $7700.00 | Window Closed / Lapsed |