US3864247A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Biological decomposition of organic material by thermophilic microorganisms
Assignee: Alfa Laval Inc
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Filing: 1972-08-23
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Granted: 1975-02-04
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Expires: 1992-08-23
Abstract
Abstract An aqueous liquid containing organic material and having a biologic oxygen demand during five days of at least 1,500 mg of oxygen gas per liter of the liquid is supplied to a treatment vessel where, in the presence of thermophilic microorganisms, it is intimately contacted with oxygen in a quantity corresponding to at least 1.1 times and at most 6 times the quantity of oxygen which theoretically can be consumed by the organic material by means of the microorganisms, the liquid being kept heat-insulated and without heat addition being maintained by the heat-producing activity of the microorganisms at a temperature of at least 42* C.
Inventors
- 👤 Hubert K E Fuchs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:23
CPC Classifications
C; C02; C02F; C02F3/00; C02F3/02; C02F3/12; C02F3/1278; C02F3/1284; C02F3/26; Y; Y02; Y02W; Y02W10/00; Y02W10/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
159 words
A METHOD FOR BIOLOGICALLY DECOMPOSING ORGANIC MATERIAL BY MEANS OF THERMOPHILIC MICROORGANISMS, SAID METHOD COMPRISING THE STEPS OF SUPPLYING TO A TREATMENT VESSEL AN AQUEOUS LIQUID CONTAINING ORGANIC MATERIAL AND HAVING A BIOLOGIC OXYGEN DEMAND DURING FIVE DAYS OF AT LEAST 1,500 MG OF OXYGEN GAS PER LITER OF LIQUID, INTIMATELY CONTACTING THE LIQUID IN SAID VESSEL, AND IN THE PRESENCE OF THERMOPHILIC MICROORGANISMS, WITH OXYGEN IN A QUANTITY CORRESPONDING TO AT LEAST 1.1 TIMES AND AT MOST 6 TIMES THE QUANTITY OF OXYGEN WHICH THEORETICALLY CAN BE CONSUMED BY THE ORGANIC MATERIAL BY MEANS OF THE THERMOPHILIC MICROORGANISMS, AND DURING SAID CONTACTING STEP, AND WITHOUT HEAT ADDITION, MAINTAINING THE LIQUID HEATINSULATED AND HEATED TO A TEMPERATURE OF AT LEAST 42*C BY THE HEAT-PRODUCING ACTIVITY OF THE THERMOPHILIC MICROORGANISMS, THE LIQUID AT THE START OF THE BIOLOGIC DECOMPOSITION BEING HEATED BY THE ACTIVITY OF MESOPHILIC MICROORGANISMS TO SAID TEMPERATURE OF AT LEAST 42*C WHERE THE THERMOPHILIC MICROORGANISMS ARE ACTIVE.
Claim 2
Independent Claim
159 words
A METHOD FOR BIOLOGICALLY DECOMPOSING ORGANIC MATERIAL BY MEANS OF THERMOPHILIC MICROORGANISMS, SAID METHOD COMPRISING THE STEPS OF SUPPLYING TO A TREATMENT VESSEL AN AQUEOUS LIQUID CONTAINING ORGANIC MATERIAL AND HAVING A BIOLOGIC OXYGEN DEMAND DURING FIVE DAYS OF AT LEAST 1,500 MG OF OXYGEN GAS PER LITER OF LIQUID, INTIMATELY CONTACTING THE LIQUID IN SAID VESSEL, AND IN THE PRESENCE OF THERMOPHILIC MICROORGANISMS, WITH OXYGEN IN A QUANTITY CORRESPONDING TO AT LEAST 1.1 TIMES AND AT MOST 6 TIMES THE QUANTITY OF OXYGEN WHICH THEORETICALLY CAN BE CONSUMED BY THE ORGANIC MATERIAL BY MEANS OF THE THERMOPHILIC MICROORGANISMS, AND DURING SAID CONTACTING STEP, AND WITHOUT HEAT ADDITION, MAINTAINING THE LIQUID HEATINSULATED AND HEATED TO A TEMPERATURE OF AT LEAST 42*C BY THE HEAT-PRODUCING ACTIVITY OF THE THERMOPHILIC MICROORGANISMS, THE LIQUID AT THE START OF THE BIOLOGIC DECOMPOSITION BEING HEATED BY THE ACTIVITY OF MESOPHILIC MICROORGANISMS TO SAID TEMPERATURE OF AT LEAST 42*C WHERE THE THERMOPHILIC MICROORGANISMS ARE ACTIVE.
References Cited (Backward Citations)
US3224964A
Cited
US3401113A
Cited
US3462275A
Cited
US3535234A
Cited
US3607737A
Cited
US3745113A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-02-03 | 1978-08-05 | 1979-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-03 | 1982-08-05 | 1983-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-03 | 1986-08-05 | 1987-02-04 | $7700.00 | Window Closed / Lapsed |