US4121993A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for treating sewage, particularly on ships
Assignee: KEU-CITEX ENERGIE-UND UMWELTTECHNIK GmbH
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Filing: 1976-09-17
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Granted: 1978-10-24
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Expires: 1996-09-17
Abstract
Abstract An apparatus is disclosed for the treatment of sewage on board ships comprising a detritus chamber, a metering and comminuting pump, a chemical container, a preliminary sedimentation tank, an electroreactor vessel and a final sedimentation tank and sludge container attached in configuration and in parallel in the form of a compact unit in a common supporting frame.
Inventors
- 👤 Hans G. Krugmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 00:09
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/46; C02F1/461; C02F1/467; B; B63; B63B; B63B29/00; B63B29/16; C02F1/465; C02F2103/00; C02F2103/008; C02F2201/00; C02F2201/001
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
99 words
An apparatus for the purification of sewage on ships by electrolysis comprising: (a) an enclosed chamber having a sewage inlet in its side wall at about the midpoint of the chamber, a clarified water exit at the bottom of the chamber, and a scum overflow discharge at the top; (b) a plurality of electrodes within the chamber positioned between said exit and discharge, adpated to electrolytically treat the incoming sewage; and (c) baffle means positioned between the bottom of the electrodes and the clarified water exist to prevent the entry of electrolytically untreated water into the clarified water exit.
Claim 2
Independent Claim
99 words
An apparatus for the purification of sewage on ships by electrolysis comprising: (a) an enclosed chamber having a sewage inlet in its side wall at about the midpoint of the chamber, a clarified water exit at the bottom of the chamber, and a scum overflow discharge at the top; (b) a plurality of electrodes within the chamber positioned between said exit and discharge, adpated to electrolytically treat the incoming sewage; and (c) baffle means positioned between the bottom of the electrodes and the clarified water exist to prevent the entry of electrolytically untreated water into the clarified water exit.
Claim 3
Dependent Claim
21 words
The apparatus of claim 1 wherein the upper portion of the chamber is conically tapered and ends in said scum exit.
Claim 4
Dependent Claim
44 words
The apparatus of claim 1 wherein the clarified water exit communicates with a discharge pipe, the end of which is above the scum discharge such that the hydrostatic pressure of the water in said discharge pipe forces the scum out through the scum discharge.
Claim 5
Dependent Claim
36 words
The apparatus of claim 1 wherein the electrodes are formed from a series of spaced parallel plates positioned centrally in the chamber such that sewage entering the chamber through the sewage inlet flows between the electrodes.
Claim 6
Dependent Claim
65 words
The apparatus of claim 1 wherein there are two series of said plates, one above and one below the sewage inlet such that when a voltage is applied to the electrodes, decomposition of water between the electrodes creates air bubbles, the movement of which forms scum with impurities in the sewage which scum rises in the chamber and forces clarified water downward through the chamber.
References Cited (Backward Citations)
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Cited
US1222637A
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US3340175A
Cited
US3943044A
Cited
US3939499A
Cited
US3962069A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-10-23 | 1982-04-24 | 1982-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-10-23 | 1986-04-24 | 1986-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-10-23 | 1990-04-24 | 1990-10-24 | $7700.00 | Window Closed / Lapsed |