Patent US4696739A successfully refreshed from Google Patents.
US4696739A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water purification apparatus
Assignee: AQUA STRIP Corp A CORP OF NY
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Filing: 1986-08-11
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Granted: 1987-09-29
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Expires: 2006-08-11
Abstract
Abstract This apparatus and method consists of serially or in parallel of contacting a contaminated water countercurrently with air, preferably containing ozone, to remove dissolved organics from the water. It is also desirable to pass the treated water through a carbon adsorbent bed prior to use.
Inventors
- 👤 John A. Pedneault
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:14
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/72; C02F1/78
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
203 words
An apparatus for removing hydrocarbon contaminants from water comprising: (a) a plurality of tubular chambers interconnected in series relationship to flow water therethrough with a water input means at one end and a water outlet means at the other end of each tubular chamber; (b) first pump means to flow a contaminated water through a first water conduit means to the first of said plurality of tubular chambers, said first pump means being controlled by the water level in the last of said plurality of tubular chambers; (c) second water conduit means at the other end of the last of said plurality of tubular chambers to flow a purified water to a reservoir; (d) each of said plurality of tubular chambers having at the lower portion thereof means for injecting air into the water contained therein and at the upper end thereof outlet means for said injected air; (e) means connecting the air outlet means of one tubular chamber with the air inlet means of the adjacent tubular chamber; and (f) compressor means controlled by the level of water in the last of said plurality of chambers with conduit means to flow the compressed air to the last of said plurality of chambers.
Claim 2
Independent Claim
203 words
An apparatus for removing hydrocarbon contaminants from water comprising: (a) a plurality of tubular chambers interconnected in series relationship to flow water therethrough with a water input means at one end and a water outlet means at the other end of each tubular chamber; (b) first pump means to flow a contaminated water through a first water conduit means to the first of said plurality of tubular chambers, said first pump means being controlled by the water level in the last of said plurality of tubular chambers; (c) second water conduit means at the other end of the last of said plurality of tubular chambers to flow a purified water to a reservoir; (d) each of said plurality of tubular chambers having at the lower portion thereof means for injecting air into the water contained therein and at the upper end thereof outlet means for said injected air; (e) means connecting the air outlet means of one tubular chamber with the air inlet means of the adjacent tubular chamber; and (f) compressor means controlled by the level of water in the last of said plurality of chambers with conduit means to flow the compressed air to the last of said plurality of chambers.
Claim 3
Dependent Claim
29 words
An apparatus for removing hydrocarbon contaminants from water as in claim 1, wherein said second water conduit means flows water to an adsorbent chamber and then to said reservoir.
Claim 4
Dependent Claim
28 words
An apparatus for removing hydrocarbon contaminants from water as in claim 2 wherein said air conduit means contains an ozone generating means whereby said injected air contains ozone.
Claim 5
Dependent Claim
21 words
An apparatus for removing hydrocarbon contaminants from water as in claim 2 wherein the adsorbent in said adsorbent chamber is carbon.
Claim 6
Dependent Claim
28 words
An apparatus for removing hydrocarbon contaminants from water as in claim 1 wherein said air conduit means contains an ozone generating means whereby said injected air contains ozone.
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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) | 1990-09-28 | 1991-03-30 | 1991-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-09-28 | 1995-03-30 | 1995-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-09-28 | 1999-03-30 | 1999-09-29 | $7700.00 | Window Closed / Lapsed |