US3659792A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of processing effluent sludge
Assignee: HAZEMAG HARTZERKLEINERUNG
•
Filing: 1969-08-21
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Granted: 1972-05-02
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Expires: 1989-08-21
Abstract
Abstract Effluent sludge obtained upon clarification of waste effluent, is admixed with solid refuse either before or subsequent to reduction of the solid refuse to particulate state in an impact grinder.
Inventors
- 👤 Eugen Von Conrad
- 👤 Kurt Rosner
- 👤 Ludwig Meyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:10
CPC Classifications
C; C02; C02F; C02F11/00; C02F11/12; C02F11/121; B; B02; B02C; B02C13/00; B02C13/02; B02C13/06; B02C13/09; B02C13/095; C05; C05F; C05F7/00; Y; Y02; Y02A; Y02A40/00; Y02A40/10; Y02A40/20
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
40 words
A method as defined in claim 1; and further comprising the steps of discharging the mixture of particulate refuse and sewage sludge from said impact grinder; and subjecting such mixture to processing leading to rotting or digesting of the mixture.
Claim 2
Dependent Claim
74 words
A method as defined in claim 1, said impact grinder having a grinding chamber into which said refuse enters and from which it issues in reduced state; and wherein the step of admixing comprises adding a first quantity of said sewage sludge to said refuse entering said grinding chamber, and adding a substantially equal second quantity of said sewage sludge to the mixture of particulate refuse and sewage sludge issuing from said grinding chamber.
Claim 3
Independent Claim
63 words
A method of processing waste matter, comprising the steps of conveying unprocessed solid refuse, including bulky refuse, into an impact grinder; reducing said solid refuse in said impact grinder mixed with sewage sludge obtained by clarification of waste effluent, to particulate state so as to form an intimate mixture of refuse particles and sludge; and discharging the resulting mixture from said impact grinder.
Claim 4
Dependent Claim
28 words
A method as defined in claim 4, comprising the step of admixing said sewage sludge with said refuse partially subsequent to reduction of the latter to particulate state.
Claim 5
Dependent Claim
25 words
A method as defined in claim 4, comprising the step of admixing said sewage sludge with said refuse in a ratio of 1:2 by weight.
Claim 6
Dependent Claim
53 words
A method as defined in claim 5, said impact grinder having a grinding chamber in which said refuse is reduced to and from which it issues in particulate state; and comprising the step of admixing parts of said sewage sludge with said refuse subsequent to issuing of said refuse from said grinding chamber.
Claim 7
Dependent Claim
23 words
A method as defined in claim 4, comprising the step of admixing said sewage sludge with said refuse in a predetermined weight ratio.
References Cited (Backward Citations)
US1543154A
Cited
US3159353A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-02 | 1975-11-01 | 1976-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-02 | 1979-11-01 | 1980-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-02 | 1983-11-01 | 1984-05-02 | $7700.00 | Window Closed / Lapsed |