US3773660A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for treating effluent
Assignee: MONO PUMPS ENG Ltd GB
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Filing: 1971-10-15
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Granted: 1973-11-20
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Expires: 1991-10-15
Abstract
Abstract A method of and apparatus for treating raw effluent such as sewage by passing the effluent through a vessel containing submerged media and passing air through the effluent and media. The effluent and air are preferably passed upwards through the vessel. The media are suitably short lengths of plastics tubing. A two stage process is possible, the effluent being passed through two such vessels. Settlement tanks for the so treated effluent are provided.
Inventors
- 👤 A Hopwood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 19:11
CPC Classifications
C; C02; C02F; C02F3/00; C02F3/02; C02F3/08; C02F3/085; C02F3/04; C02F3/06; C02F3/10; C02F3/12; Y; Y02; Y02W; Y02W10/00; Y02W10/10
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
22 words
A method as claimed in claim 1 including the further step of passing the effluent from the vessel to a settlement tank.
Claim 2
Dependent Claim
40 words
A method as claimed in claim 2 including the further step of passing the treated effluent from said settlement tank to a second vessel containing submerged contact media and passing air through the effluent and media in the second vessel.
Claim 3
Dependent Claim
24 words
A method as claimed in claim 3 including the further step of passing the effluent from the second vessel to a second settlement tank.
Claim 4
Dependent Claim
18 words
A method as claimed in claim 1, wherein the air is fed upwardly through the or each vessel.
Claim 5
Dependent Claim
18 words
A method as claimed in claim 1, wherein the effluent is fed upwardly through the or each vessel.
Claim 6
Dependent Claim
76 words
Whole raw sewage effluent treatment apparatus, comprising a macerator, at least one vessel, contact media comprising a bed of randomly arranged discrete pieces of plastics material within said vessel, means to supply effluent to said vessel, means for supplying air to said vessel, whereby said effluent and air pass through said bed, and means to withdraw treated effluent from said vessel at a location in said vessel above said media, such that the media is submerged.
Claim 7
Dependent Claim
21 words
Apparatus as claimed in claim 7 and further comprising a settlement tank connected to said vessel to receive treated effluent therefrom.
Claim 8
Dependent Claim
34 words
Apparatus as claimed in claim 8 and further comprising a second vessel containing contact media and connected to said settlement tank, and a second settlement tank to receive treated effluent from said second vessel.
Claim 9
Dependent Claim
14 words
Apparatus as claimed in claim 7, wherein said media comprises short lengths of tubing.
Claim 10
Dependent Claim
21 words
Apparatus as claimed in claim 7, and further comprising upper and lower media retaining grids in said at least one vessel.
Claim 11
Dependent Claim
37 words
Apparatus as claimed in claim 11 wherein said effluent supply means and said air supply means are located to supply effluent and air respectively to said at least one vessel at a location below said lower grid.
Claim 12
Dependent Claim
28 words
Apparatus as claimed in claim 11 and further comprising an intermediate grid in one said vessel, said intermediate grid defining with said upper and lower grids two compartments.
Claim 13
Dependent Claim
34 words
Apparatus as claimed in claim 13 wherein media of 2 inches diameter are in one of said compartments and media of between 3 and 4 inches diameter are in the other of said compartments.
Claim 14
Dependent Claim
18 words
Apparatus as claimed in claim 9 wherein the media in said second vessel are of 1 inch diameter.
Claim 15
Dependent Claim
20 words
Apparatus as claimed in claim 7, and further comprising a diffuser in said at least one vessel for supplying air.
Claim 16
Dependent Claim
25 words
Apparatus as claimed in claim 7, and further comprising an effluent recirculation pipe to said at least one vessel to recirculate effluent through said vessel.
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) | 1976-11-19 | 1977-05-21 | 1977-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-19 | 1981-05-21 | 1981-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-19 | 1985-05-21 | 1985-11-20 | $7700.00 | Window Closed / Lapsed |