US3685656A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recirculating ozone treatment apparatus
Assignee: Individual
•
Filing: 1971-03-11
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Granted: 1972-08-22
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Expires: 1991-03-11
Abstract
Abstract An apparatus for the recirculating treatment of contaminated liquids with ozone having venturies which mix ozone with contaminated liquid and discharge the mixture into a treatment tank. A holding tank is connected to and receives liquid from the treatment tank and a portion of this liquid is recirculated through the venturies and treatment tank. The extent to which the contaminated liquid is exposed to and treated by ozone is controlled by varying the rate at which the liquid is recirculated in relation to the rate at which treated liquid is discharged from the holding tank.
Inventors
- 👤 Richard J Schaefer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:45
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/72; C02F1/78
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
189 words
An apparatus for the recirculating treatment of contaminated liquids with ozone comprising: a. a holding chamber with an outlet for treated liquid, b. a treatment chamber with a crossover conduit connecting said chambers to allow liquid in said treatment chamber to flow into said holding chamber, c. at least one first venturi to mix ozone with a contaminated liquid and discharge the mixture into said treatment chamber below said crossover conduit, d. at least one second venturi to mix ozone with liquid from said holding chamber and discharge the mixture into said treatment chamber below said crossover conduit, and e. ozone generator means adapted to supply ozone to said first and second venturies, whereby said first venturi mixes ozone supplied by said generator means with contaminated liquid and discharges the mixture into said treatment chamber, the liquid in said treatment chamber flows through said crossover conduit into said holding tank, and ozone supplied by said generator means is mixed by said second venturi with liquid from said holding chamber and discharged into said treatment chamber with treated liquid flowing from said holding chamber through said outlet for treated liquid.
Claim 2
Independent Claim
189 words
An apparatus for the recirculating treatment of contaminated liquids with ozone comprising: a. a holding chamber with an outlet for treated liquid, b. a treatment chamber with a crossover conduit connecting said chambers to allow liquid in said treatment chamber to flow into said holding chamber, c. at least one first venturi to mix ozone with a contaminated liquid and discharge the mixture into said treatment chamber below said crossover conduit, d. at least one second venturi to mix ozone with liquid from said holding chamber and discharge the mixture into said treatment chamber below said crossover conduit, and e. ozone generator means adapted to supply ozone to said first and second venturies, whereby said first venturi mixes ozone supplied by said generator means with contaminated liquid and discharges the mixture into said treatment chamber, the liquid in said treatment chamber flows through said crossover conduit into said holding tank, and ozone supplied by said generator means is mixed by said second venturi with liquid from said holding chamber and discharged into said treatment chamber with treated liquid flowing from said holding chamber through said outlet for treated liquid.
Claim 3
Dependent Claim
59 words
The ozone treatment apparatus of claim 1 which also comprises a first pump operably connected to said first venturi and adapted to supply contaminated liquid under pressure to said first venturi and a second pump operably connected to said treatment tank and to said second venturi to supply liquid under pressure to said second venturi from said treatment tank.
Claim 4
Dependent Claim
128 words
The ozone treatment apparatus of claim 2 which also comprises first and second adjustable-rate-of-flow control valves and in which said first and second pumps comprise first and second centrifugal pumps with the outlet of said first pump connected to said first venturi through one of said flow control valves and the outlet of said second pump connected to said second venturi through the other of said control valves, such that the rate of flow of liquid through said first and second venturies can be adjusted by said control valves to vary and control the extent to which the liquid being treated is mixed with ozone in said venturies before the liquid being treated is discharged from the apparatus through said outlet for treated liquid of said holding chamber.
Claim 5
Dependent Claim
44 words
The treatment apparatus of claim 1 which also comprises compressor means operably connected to said ozone generator to supply ozone to said venturies at a pressure greater than atmospheric pressure, whereby the amount of ozone mixed with the liquid by said venturies is increased.
Claim 6
Dependent Claim
44 words
The treatment apparatus of claim 3 which also comprises compressor means operably connected to said ozone generator to supply ozone to said venturies at a pressure greater than atmospheric pressure, whereby the amount of ozone mixed with the liquid by said venturies is increased.
Claim 7
Dependent Claim
16 words
The apparatus of claim 1 which comprises a plurality of said first and said second venturies.
Claim 8
Dependent Claim
16 words
The apparatus of claim 3 which comprises a plurality of said first and said second venturies.
Claim 9
Dependent Claim
16 words
The apparatus of claim 4 which comprises a plurality of said first and said second venturies.
Claim 10
Dependent Claim
16 words
The apparatus of claim 5 which comprises a plurality of said first and said second venturies.
Claim 11
Dependent Claim
61 words
The treatment apparatus of claim 1 in which each of said first and said second venturies has a body with a removable liquid metering orifice and a tube received therein such that said metering orifice and said tube can be readily removed and exchanged, whereby said ventuRies can be readily adapted for different rates of flow of liquid through said venturies.
Claim 12
Dependent Claim
60 words
The treatment apparatus of claim 3 in which each of said first and said second venturies has a body with a removable liquid metering orifice and tube received therein such that said metering orifice and said tube can be readily removed and exchanged, whereby said venturies can be readily adapted for different rates of flow of liquid through said venturies.
Claim 13
Dependent Claim
61 words
The treatment apparatus of claim 9 in which each of said first and said second venturies has a body with a removable liquid metering orifice and a tube received therein such that said metering orifice and said tube can be readily removed and exchanged, whereby said venturies can be readily adapted for different rates of flow of liquid through said venturies.
Claim 14
Dependent Claim
71 words
The treatment apparatus of claim 2 in which the inlet of said second pump is connected through a first valve to said holding tank and through a second valve is adapted to be connected to a reservoir of untreated liquid, whereby said valves can be manipulated such that said second pump can supply liquid under pressure to said second venturi from either said holding tank or the reservoir of untreated liquid.
Claim 15
Dependent Claim
71 words
The treatment apparatus of claim 12 in which the inlet of said second pump is connected through a first valve to said holding tank and through a second valve is adapted to be connected to a reservoir of untreated liquid, whereby said valves can be manipulated such that said second pump can supply liquid under pressure to said second venturi from either said holding tank or the reservoir of untreated liquid.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-22 | 1976-02-21 | 1976-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-22 | 1980-02-21 | 1980-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-22 | 1984-02-21 | 1984-08-22 | $7700.00 | Window Closed / Lapsed |