US3764011A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sewage treatment apparatus
Assignee: Individual
•
Filing: 1971-12-16
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Granted: 1973-10-09
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Expires: 1991-12-16
Abstract
Abstract A portable self-contained sewage treatment plant particularly designed to meet the needs of small sub-divisions and the like contains within a single tank body an aeration chamber, a settlement chamber and a chlorination chamber. The plant features an aeration system which also serves to power jets for the return of heavy and light solids from the settlement chamber into the aeration chamber. A floating skimmer in the settlement chamber removes light solids from the surface of the liquid for delivery to one return jet. Liquid from the settlement chamber flows into the chlorination chamber and clear effluent is discharged from the latter.
Inventors
- 👤 D Owens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:37
CPC Classifications
C; C02; C02F; C02F3/00; C02F3/02; C02F3/12; C02F3/1278; C02F3/1294; B; B01; B01D; B01D21/00; B01D21/10; B01D21/24; B01D21/2433; C02F3/1236; C02F3/1242; Y; Y02; Y02W; Y02W10/00; Y02W10/10
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
176 words
A sewage treatment apparatus comprising a tank body having separated aeration, settlement and chemical treatment chambers and overflow passage means through which liquid may flow serially from one chamber to the next, aeration means in the aeration chamber, a floating skimmer in the settlement chamber and skimming lightweight solids from the liquid therein, return conduit means for said lightweight solids connected with the floating skimmer and leading to the aeration chamber, return conduit means for heavier solids leading from the bottom portion of the settlement chamber to the aeration chamber, said floating skimmer comprising an elongated substantially horizontal tube body having longitudinal slots in its opposite sides, flotation elements secured to the tube body, a depending outlet sleeve for fluid on the tube body, a coacting upstanding sleeve having telescopic sliding engagement with the depending sleeve and being connected to said return conduit means for said lightweight solids, and fluid jet nozzle means in both said return conduit means and inducing fluid flow therein, said jet nozzle means connected with and powered by said aeration means.
Claim 2
Dependent Claim
176 words
A sewage treatment apparatus comprising a tank body having separated aeration, settlement and chemical treatment chambers and overflow passage means through which liquid may flow serially from one chamber to the next, aeration means in the aeration chamber, a floating skimmer in the settlement chamber and skimming lightweight solids from the liquid therein, return conduit means for said lightweight solids connected with the floating skimmer and leading to the aeration chamber, return conduit means for heavier solids leading from the bottom portion of the settlement chamber to the aeration chamber, said floating skimmer comprising an elongated substantially horizontal tube body having longitudinal slots in its opposite sides, flotation elements secured to the tube body, a depending outlet sleeve for fluid on the tube body, a coacting upstanding sleeve having telescopic sliding engagement with the depending sleeve and being connected to said return conduit means for said lightweight solids, and fluid jet nozzle means in both said return conduit means and inducing fluid flow therein, said jet nozzle means connected with and powered by said aeration means.
Claim 3
Dependent Claim
40 words
The structure of claim 1, and said aeration means comprising air diffuser heads in the aeration chamber near the bottom thereof, and air supply conduits connected with said heads and adapted for connection with a source of air under pressure.
Claim 4
Dependent Claim
41 words
The structure of claim 2, and said return conduit means for said lightweight and heavier solids including a pair of riser Pipes, and said jet nozzle means comprising an upwardly directed air jet nozzle in each riser pipe arranged coaxially therewith.
Claim 5
Dependent Claim
28 words
The structure of claim 1, and said chemical treatment chamber comprising a chlorination chamber receiving liquid by overflow from the settlement chamber and having a pure liquid outlet.
Claim 6
Dependent Claim
13 words
The structure of claim 1, and a skid base for said tank body.
Claim 7
Dependent Claim
24 words
The structure of claim 5, and lifting elements on the tank body near the corners thereof and near the top of the tank body.
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) | 1976-10-08 | 1977-04-09 | 1977-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-08 | 1981-04-09 | 1981-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-08 | 1985-04-09 | 1985-10-09 | $7700.00 | Window Closed / Lapsed |