US3842764A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System for disposing of sewage sludge
Assignee: Individual
•
Filing: 1972-05-24
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Granted: 1974-10-22
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Expires: 1992-05-24
Abstract
Abstract Sewage is concentrated to a sludge stage, and then conveyed to a field where a plow applicator injects the sludge into the ground and covers the sludge continuously as the applicator traverses the field. A long flexible supply conduit is connected between the plow applicator and a supply point for continuously supplying the sludge to the movable applicator.
Inventors
- 👤 W Bauer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:30
CPC Classifications
E; E03; E03F; E03F1/00; E03F1/002; A; A01; A01C; A01C23/00; A01C23/02; A01C23/021; C; C02; C02F; C02F1/00; C02F1/006; C02F11/00; C02F11/12; C02F3/00; C02F3/02; C02F3/04; C02F3/046; C05; C05F; C05F7/00; Y; Y02; Y02A; Y02A40/00; Y02A40/10; Y02A40/20; Y02W; Y02W10/00; Y02W10/10; Y10; Y10S; Y10S111/00; Y10S111/925
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
114 words
A method of disposing of sewage sludge comprising conveying a concentrated aqueous sewage sludge to a fixed supply outlet located in the vicinity of a field, traversing said field with an implement having an element for opening a furrow in the soil, continually opening a furrow in the soil of such field with said implement during each such traverse, continually conveying said sludge from said fixed supply outlet to said implement through a flexible closed conduit and continually depositing said sludge from said implement into such furrow immediately behind said earth-opening element during each such traverse, and closing said furrow with soil over such deposited sludge immediately behind such implement during each such traverse.
Claim 2
Independent Claim
114 words
A method of disposing of sewage sludge comprising conveying a concentrated aqueous sewage sludge to a fixed supply outlet located in the vicinity of a field, traversing said field with an implement having an element for opening a furrow in the soil, continually opening a furrow in the soil of such field with said implement during each such traverse, continually conveying said sludge from said fixed supply outlet to said implement through a flexible closed conduit and continually depositing said sludge from said implement into such furrow immediately behind said earth-opening element during each such traverse, and closing said furrow with soil over such deposited sludge immediately behind such implement during each such traverse.
Claim 3
Dependent Claim
37 words
A method as in claim 1 comprising opening a plurality of said furrows simultaneously with a plow having a plurality of earth opening elements, and depositing such sludge in the respective furrows immediately behind the respective elements.
Claim 4
Dependent Claim
18 words
A method as in claim 1 wherein said sludge is conveyed to said field through a pipeline system.
Claim 5
Dependent Claim
17 words
A method as in claim 1 wherein said sludge is conveyed to said field in mobile tanks.
Claim 6
Dependent Claim
62 words
A method as in claim 1 wherein said traversing implement has a plurality of such furrow-opening elements, including simultaneously opening a plurality of such furrows with said traversing implement during each such traverse, continually depositing such sludge in each of said furrows immediately behind the respective earth-opening elements, and closing said furrows with soil over such deposited sludge immediately after such deposition.
Claim 7
Dependent Claim
20 words
A method as in claim 1 in which said concentrated aqueous sewage sludge comprises more than about 2 percent solids.
Claim 8
Dependent Claim
18 words
A method as in claim 1 in which said concentrated aqueous sewage sludge is about 10 percent solids.
Claim 9
Dependent Claim
141 words
In a method of disposing of sewage materials including processing sewage solids to form a concentrated flowable undigested sewage sludge at a first site, the improvement comprising conveying said sludge in closed conveyance means and in an undigested state from said first site to a second site in the vicinity of a field, traversing said field with an implement having an element for opening a furrow in the soil, continually opening a furrow in the soil of such field with said implement during each such traverse, continually conveying said sludge from said second site to said implement in a flexible closed conduit and continually depositing said sludge from said implement into such furrow behind said element during each such traverse, and continually and promptly closing said furrow with soil over such deposited sludge immediately behind such implement during each such traverse.
Claim 10
Dependent Claim
141 words
In a method of disposing of sewage materials including processing sewage solids to form a concentrated flowable undigested sewage sludge at a first site, the improvement comprising conveying said sludge in closed conveyance means and in an undigested state from said first site to a second site in the vicinity of a field, traversing said field with an implement having an element for opening a furrow in the soil, continually opening a furrow in the soil of such field with said implement during each such traverse, continually conveying said sludge from said second site to said implement in a flexible closed conduit and continually depositing said sludge from said implement into such furrow behind said element during each such traverse, and continually and promptly closing said furrow with soil over such deposited sludge immediately behind such implement during each such traverse.
Claim 11
Dependent Claim
19 words
A method as in claim 8 including treating said sludge prior to deposition to destroy pathogens and parasites therein.
Claim 12
Dependent Claim
19 words
A method as in claim 8 including heating said sludge prior to deposition to destroy pathogens and parasites therein.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-10-21 | 1978-04-22 | 1978-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-21 | 1982-04-22 | 1982-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-21 | 1986-04-22 | 1986-10-22 | $7700.00 | Window Closed / Lapsed |