US3980557A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phosphorus removal from wastewater
Assignee: University Patents Inc
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Filing: 1974-12-18
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Granted: 1976-09-14
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Expires: 1994-12-18
Abstract
Abstract Disclosed are methods and materials, involving the microorganism Acinetobacter phosphadevorus (NRRL B-8058), useful in the removal of phosphorus from waste water.
Inventors
- 👤 Irving Yall
- 👤 Norval Arthur Sinclair
- 👤 Frank Andrew Roinestad
- 👤 Charles Francis Russ
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:35
CPC Classifications
C; C02; C02F; C02F3/00; C02F3/02; C02F3/12; C02F3/1205; C02F3/1215; C02F3/34; Y; Y02; Y02W; Y02W10/00; Y02W10/10; Y10; Y10S; Y10S210/00; Y10S210/902; Y10S210/906; Y10S435/00; Y10S435/8215; Y10S435/822
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
41 words
A process for enhancing the orthophosphate removal capacity of a continuous culture activated sludge sewage treatment system, said process comprising: introducing, into the sludge of the system, a bacterial inoculant comprising a cultured growth of the microorganism Acinetobacter phosphadevorus (NRRL B-8058).
Claim 2
Dependent Claim
41 words
A process for enhancing the orthophosphate removal capacity of a continuous culture activated sludge sewage treatment system, said process comprising: introducing, into the sludge of the system, a bacterial inoculant comprising a cultured growth of the microorganism Acinetobacter phosphadevorus (NRRL B-8058).
Claim 3
Dependent Claim
43 words
The process of claim 1 wherein said inoculant comprises a suspension of a cultured growth of the microorganism Acinetobacter phosphadevorus (NRRL B-8058) in an aqueous growth-supporting medium substantially identical in non-biological component composition to the raw sewage to be treated in said system.
Claim 4
Dependent Claim
17 words
The process of claim 2 wherein said medium is sterilized sewage of the type to be treated.
Claim 5
Dependent Claim
53 words
A process for enhancing the orthophosphate removal capacity of a continuous culture activated sludge sewage treatment system not containing an effective population of the microorganism Acinetobacter phosphadevorus (NRRL B-8058), said process comprising: introducing, into the sludge of the system, a bacterial inoculant comprising a cultured growth of the microorganism Acinetobacter phosphadevorus (NRRL B-8058).
Claim 6
Dependent Claim
53 words
A process for enhancing the orthophosphate removal capacity of a continuous culture activated sludge sewage treatment system not containing an effective population of the microorganism Acinetobacter phosphadevorus (NRRL B-8058), said process comprising: introducing, into the sludge of the system, a bacterial inoculant comprising a cultured growth of the microorganism Acinetobacter phosphadevorus (NRRL B-8058).
Claim 7
Dependent Claim
43 words
The process of claim 4 wherein said inoculant comprises a suspension of a cultured growth of the microorganism Acinetobacter phosphadevorus (NRRL B-8058) in an aqueous, growth-supporting medium substantially identical in non-biological component composition to the raw sewage to be treated in said system.
Claim 8
Dependent Claim
17 words
The process of claim 5 wherein said medium is sterilized sewage of the type to be treated.
Claim 9
Dependent Claim
64 words
A process for enhancing the orthophosphate removal capacity of a continuous culture activated sludge sewage treatment system, said process comprising, in sequence: acclimating a cultured growth of the microorganism Acinetobacter phosphadevorus (NRRL B-8058) to the ambient, bacterial-growth-affecting conditions of the particular raw sewage to be treated in said treatment system; and, introducing the resulting acclimated microorganism into the activated sludge of said treatment system.
Claim 10
Dependent Claim
64 words
A process for enhancing the orthophosphate removal capacity of a continuous culture activated sludge sewage treatment system, said process comprising, in sequence: acclimating a cultured growth of the microorganism Acinetobacter phosphadevorus (NRRL B-8058) to the ambient, bacterial-growth-affecting conditions of the particular raw sewage to be treated in said treatment system; and, introducing the resulting acclimated microorganism into the activated sludge of said treatment system.
Claim 11
Dependent Claim
36 words
The process of claim 7 wherein said acclimating step comprises introducing a cultured growth of said microorganism into an aqueous medium substantially identical in non-biological component composition to that of the raw sewage to be treated.
Claim 12
Dependent Claim
17 words
The process of claim 8 wherein said medium is sterilized sewage of the type to be treated.
Claim 13
Dependent Claim
45 words
The process of claim 9 further including aerating, with a gas containing oxygen, said sterilized sewage into which said microorganism has been introduced until said microorganism has adapted to the bacterial-growth-affecting conditions prevailing therein, as evidenced by substantially continuous growth and reproduction of said microorganism.
Claim 14
Dependent Claim
50 words
A process for removing orthophosphate from raw sewage, said process comprising: subjecting said raw sewage to continuous culture activated sludge treatment with a sludge containing a bacterial inoculant additive essentially consisting of a suspension of a cultured growth of the microorganism Acinetobacter phosphadevorus (NRRL B-8058), in an aqueous growth-supporting medium.
Claim 15
Dependent Claim
50 words
A process for removing orthophosphate from raw sewage, said process comprising: subjecting said raw sewage to continuous culture activated sludge treatment with a sludge containing a bacterial inoculant additive essentially consisting of a suspension of a cultured growth of the microorganism Acinetobacter phosphadevorus (NRRL B-8058), in an aqueous growth-supporting medium.
Claim 16
Dependent Claim
24 words
The process of claim 11 wherein said aqueous growth-supporting medium is substantially identical in non-biological component composition to the raw sewage to be treated.
Claim 17
Dependent Claim
17 words
The process of claim 12 wherein said medium is sterilized sewage of the type to be treated.
Claim 18
Dependent Claim
19 words
The process of claim 11 wherein said microorganism has been cultivated under conditions substantially devoid of other bacterial growth.
Claim 19
Dependent Claim
19 words
The process of claim 11 wherein said microorganism has been cultivated under conditions substantially devoid of other biological growth.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-09-14 | 1980-03-15 | 1980-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-09-14 | 1984-03-15 | 1984-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-09-14 | 1988-03-15 | 1988-09-14 | $7700.00 | Window Closed / Lapsed |