US3248324A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Removing organic matter from aqueous wastes
Assignee: Chevron USA Inc
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Filing: 1964-02-20
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Granted: 1966-04-26
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Expires: 1984-02-20
Abstract
No abstract record available.
Inventors
- 👤 William A Sweeney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:03
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
144 words
A METHOD OF REMOVING ORGANIC MATER FROM AQUEOUS WASTE WHICH CONTAINS SURFACTANTS AND OTHER ORGANIC MATTER, WHICH METHOD COMPRISES: INTRODUCING SAID QUEOUS WASTE INTO A FOAAMING ZONE; PASSING GAS THROUGH THE AQUEOUS WASTE TO FORM FOAM CONTAINING SIGNIFICANT AMOUNTS OF SURFACTANTS AS WELL AS OTHER ORGANIC MATTER IN AN UPPER PORTION OF SAID FOAMING ZONE; TRANSFERRING THE FOAM TO A BIOLOGICAL DEGRADATION ZONE WHICH HAS BEEN ACCLIMATED TO SAID SURFACTANT-CONTAINING FOAM BY SLOWLY INCREASING THE CONCENTRATION OF FOAMING SURFACTANT WHICH IS FED AS AN INFLUENT INTO SAID DEGRADATION ZONE; ALLOWING THE FOAM MTO REMAIN IN THE BILOGICAL DEGRADATION ZONE FOR A SUFFICIENT TIME TO DEGRADE A SUBSTANTIAL PORTION OF THE SURFACTANT AND ORTHER ORGANIC MATTER; AND OBTAINING AS EFFLUENTS FROM THE BIOLOGICAL DEGRADATION ZONE AND THE LOWER PORTION OF THE FOAMING ZONE AN AQUEOUS EFFLUENT HAVING SIGNIFICANTLY REDUCED CONCENTRATIONS OFSURFACTANTS AND OTHER ORGANIC MATTER.
Claim 2
Independent Claim
144 words
A METHOD OF REMOVING ORGANIC MATER FROM AQUEOUS WASTE WHICH CONTAINS SURFACTANTS AND OTHER ORGANIC MATTER, WHICH METHOD COMPRISES: INTRODUCING SAID QUEOUS WASTE INTO A FOAAMING ZONE; PASSING GAS THROUGH THE AQUEOUS WASTE TO FORM FOAM CONTAINING SIGNIFICANT AMOUNTS OF SURFACTANTS AS WELL AS OTHER ORGANIC MATTER IN AN UPPER PORTION OF SAID FOAMING ZONE; TRANSFERRING THE FOAM TO A BIOLOGICAL DEGRADATION ZONE WHICH HAS BEEN ACCLIMATED TO SAID SURFACTANT-CONTAINING FOAM BY SLOWLY INCREASING THE CONCENTRATION OF FOAMING SURFACTANT WHICH IS FED AS AN INFLUENT INTO SAID DEGRADATION ZONE; ALLOWING THE FOAM MTO REMAIN IN THE BILOGICAL DEGRADATION ZONE FOR A SUFFICIENT TIME TO DEGRADE A SUBSTANTIAL PORTION OF THE SURFACTANT AND ORTHER ORGANIC MATTER; AND OBTAINING AS EFFLUENTS FROM THE BIOLOGICAL DEGRADATION ZONE AND THE LOWER PORTION OF THE FOAMING ZONE AN AQUEOUS EFFLUENT HAVING SIGNIFICANTLY REDUCED CONCENTRATIONS OFSURFACTANTS AND OTHER ORGANIC MATTER.
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) | 1969-04-25 | 1969-10-25 | 1970-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-25 | 1973-10-25 | 1974-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-25 | 1977-10-25 | 1978-04-26 | $7700.00 | Window Closed / Lapsed |