Patent US2548542A successfully refreshed from Google Patents.
US3772192A
Expired / Lapsed
US
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Method and apparatus for purifying sea water
Assignee: Max-Planck-Gesellschaft zur Förderung der Wissenschaften eV
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Filing: 1972-05-13
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Granted: 1973-11-13
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Expires: 1992-05-13
Abstract
Abstract Sea water contaminated with suspended organic matter and the like can be purified by expanding a mixture of the water with air so as to generate a froth, and letting the froth carrying the impurities overflow from a tubular riser attached to the expansion vessel while purified water is drawn off from the bottom of the vessel. The froth is stabilized by maintaining a layer of more alkaline liquid on the inner wall of the riser. The apparatus employed uses a rotating nozzle for continuously rinsing the wall of the riser with a liquid more alkaline than the froth, such as the original sea water prior to its being mixed with air.
Inventors
- 👤 G Huckstedt
- 👤 H Jakobs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 03:53
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/24
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
35 words
A method as set forth in claim 1, wherein said raw water is sea water contaminated with ions of a heavy metal, said ions accumulating in said froth and being removed therewith from said water.
Claim 2
Dependent Claim
34 words
A method as set forth in claim 1, wherein said raw water is sea water contaminated with suspended organic matter, said organic matter accumulating in said froth and being removed therewith from said water.
Claim 3
Dependent Claim
24 words
A method as set forth in claim 1, wherein said liquid is constituted by a portion of said raw water free from said air.
Claim 4
Dependent Claim
165 words
Water purification apparatus comprising, in combination: a. an expansion vessel; b. mixing means for intimately mixing the water to be purified and air; c. feeding means for feeding the resulting mixture of water and air to said expansion vessel under a pressure higher than the pressure in said vessel, whereby said mixture expands in said vessel; d. outlet means on a bottom portion of said vessel for withdrawing purified water from said vessel while maintaining a liquid level in said vessel; e. a tubular riser upwardly extending from said vessel and enclosing a space, said space communicating with said vessel for receiving froth generated by expansion of said mixture in said vessel, said froth rising above said level; f. releasing means for releasing said froth from a portion of said space upwardly remote from said vessel; and g. rinsing means for applying a film of liquid to an inner face of said riser while keeping the remainder of said space substantially free from said liquid.
Claim 5
Dependent Claim
36 words
Apparatus as set forth in claim 5, wherein said rinsing means include a nozzle member directed toward a portion of said inner face contiguously adjacent said releasing means and offset from the same toward said level.
Claim 6
Dependent Claim
55 words
Apparatus as set forth in claim 6, wherein said riser has an upright axis, said inner face extends about said axis, and said rinsing means include rotating means for rotating said nozzle member about said axis and for thereby sequentially directing said liquid to portions of said inner face angularly offset relative to said axis.
Claim 7
Dependent Claim
83 words
Apparatus as set forth in claim 7, wherein said rotating means include a tubular member elongated in the direction of said axis, drive means for rotating said tubular member about said axis, said tubular member having respective orifices in said space and outside said space, said nozzle member being attached to said tubular member in sealing engagement with the orifice of the tubular member in said space, and means for supplying said liquid to the orifice of said tubular member outside said space.
Claim 8
Dependent Claim
47 words
Apparatus as set forth in claim 5, wherein said mixing means include a water jet pump and means for connecting said water jet pump to a source of the water to be purified and to ambient air, said feeding means connecting said pump to said expansion vessel.
References Cited (Backward Citations)
US2446655A
Cited
US3669883A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-11-12 | 1977-05-14 | 1977-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-12 | 1981-05-14 | 1981-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-12 | 1985-05-14 | 1985-11-13 | $7700.00 | Window Closed / Lapsed |