US4080292A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tank for agitation and aeration of sewages
Assignee: Biuro Projektowo-Konstrukcyjne Centralnego Zwiazku Spoldzielni
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Filing: 1976-06-07
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Granted: 1978-03-21
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Expires: 1996-06-07
Abstract
Abstract Tank for agitation and aeration of municipal and industrial wastes. In a simple manner, turbine-type aerators are installed along the longitudinal axis of a tank, between which partitions (e.g. "(2)") are arranged, dividing the tank into at least two connected ditches. In these ditches aerating brushes or mammoth rotors (e.g. "(2)") are installed. In a multi-ditch system the tank is (e.g. "(2)") divided into several ditches. At joints of the partitions (e.g. "(2)") or in these partitions themselves, recesses (4) are made that reach below the level of the liquid, in which the turbine-type aerators (e.g. "(2)") are installed.
Inventors
- 👤 Ryszard Przybylowicz
- 👤 Czeslaw Zabierzewski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 00:11
CPC Classifications
C; C02; C02F; C02F3/00; C02F3/02; C02F3/12; C02F3/1236; C02F3/1257; C02F3/14; C02F3/16; Y; Y02; Y02W; Y02W10/00; Y02W10/10
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
146 words
A tank arrangement for the agitation and aeration of sewage, comprising a tank having a generally uniform depth and a substantially rectangular shape in horizontal cross-section; turbine-type aerators (1) in said tank; said aerators being rotatable about a vertical axis, said aerators being longitudinally spaced in said tank, longitudinally extending straight partitions (2) arranged between said aerators and dividing the tank into at least two interconnected adjacent ditches; and at least one aerating means (3) including a brush rotatable about a horitzontal axis installed transversely in said ditches; the aerators and aerating means being so arranged and rotated so that both vertical and horizontal turbulence are produced throughout said tank in said adjacent ditches in which there are different directions of horizontal flow such that said turbulence maintains the activated sludge in suspended condition uniformly distributed throughout the tank together with a proper quantity of oxygen.
Claim 2
Dependent Claim
146 words
A tank arrangement for the agitation and aeration of sewage, comprising a tank having a generally uniform depth and a substantially rectangular shape in horizontal cross-section; turbine-type aerators (1) in said tank; said aerators being rotatable about a vertical axis, said aerators being longitudinally spaced in said tank, longitudinally extending straight partitions (2) arranged between said aerators and dividing the tank into at least two interconnected adjacent ditches; and at least one aerating means (3) including a brush rotatable about a horitzontal axis installed transversely in said ditches; the aerators and aerating means being so arranged and rotated so that both vertical and horizontal turbulence are produced throughout said tank in said adjacent ditches in which there are different directions of horizontal flow such that said turbulence maintains the activated sludge in suspended condition uniformly distributed throughout the tank together with a proper quantity of oxygen.
Claim 3
Dependent Claim
41 words
The tank arrangment as claimed in claim 1, wherein said partitions (2) are provided with recesses (4) therein that extend down below the level of the liquid in said tank; and wherein said turbine-type aerators (1) are installed in said recesses.
Claim 4
Dependent Claim
35 words
The tank arrangement as claimed in claim 2, wherein said partitions (2) include walls, selected of which are connected at joints, and said recesses (4) are provided in the joints between the selected said walls.
Claim 5
Dependent Claim
19 words
The tank arrangement as claimed in claim 1 wherein the partitions are installed along the axis of said tank.
References Cited (Backward Citations)
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Cited
US3458176A
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US3510110A
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US3760946A
Cited
US3809242A
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US3947358A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-03-20 | 1981-09-19 | 1982-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-03-20 | 1985-09-19 | 1986-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-03-20 | 1989-09-19 | 1990-03-21 | $7700.00 | Window Closed / Lapsed |