US3680704A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ozone sewage treatment apparatus
Assignee: Individual
•
Filing: 1971-03-11
•
Granted: 1972-08-01
•
Expires: 1991-03-11
Abstract
Abstract An apparatus for secondary treatment of sewage effluent with an ozone contact chamber connected to a tile field with a vent to the atmosphere at a point remote from the connection to the chamber. A generator produces ozone in compressed air which is discharged into sewage effluent in the chamber and passes through the tile field and vent to the atmosphere to treat the sewage effluent in both the chamber and the tile field.
Inventors
- 👤 Richard J Schaefer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:22
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/72; C02F1/78
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
219 words
An apparatus for secondary treatment of sewage effluent comprising: a. a closed ozone contact chamber with a liquid zone adapted to receive liquid sewage effluent and a gas zone above the liquid zone for receiving ozone, said chamber having a sewage effluent inlet adapted to communicate with the liquid zone in normal operation of the apparatus and a fluid outlet adapted to simultaneously communicate with both the liquid zone and gas zone in normal operation of the apparatus, b. an ozone diffuser in the liquid zone of said contact chamber, said diffuser adapted to discharge ozone into liquid sewage effluent in the liquid zone of said chamber, c. a sewage effluent tile field connected to said fluid outlet of said chamber and adapted to receive both liquid sewage effluent and ozone from said chamber in normal operation of the apparatus, d. a vent connected to said tile field at a point remote from the connection of said field to said fluid outlet for allowing ozone and gases from the sewage effluent to escape from said field to the atmosphere and e. an ozone generator connected to said ozone diffuser and adapted to discharge sufficient ozone Into said chamber to provide a flow of ozone into said tile field and to exhaust spent ozone to the atmosphere through said vent.
Claim 2
Independent Claim
219 words
An apparatus for secondary treatment of sewage effluent comprising: a. a closed ozone contact chamber with a liquid zone adapted to receive liquid sewage effluent and a gas zone above the liquid zone for receiving ozone, said chamber having a sewage effluent inlet adapted to communicate with the liquid zone in normal operation of the apparatus and a fluid outlet adapted to simultaneously communicate with both the liquid zone and gas zone in normal operation of the apparatus, b. an ozone diffuser in the liquid zone of said contact chamber, said diffuser adapted to discharge ozone into liquid sewage effluent in the liquid zone of said chamber, c. a sewage effluent tile field connected to said fluid outlet of said chamber and adapted to receive both liquid sewage effluent and ozone from said chamber in normal operation of the apparatus, d. a vent connected to said tile field at a point remote from the connection of said field to said fluid outlet for allowing ozone and gases from the sewage effluent to escape from said field to the atmosphere and e. an ozone generator connected to said ozone diffuser and adapted to discharge sufficient ozone Into said chamber to provide a flow of ozone into said tile field and to exhaust spent ozone to the atmosphere through said vent.
Claim 3
Dependent Claim
26 words
The apparatus of claim 1 which also comprises a septic tank having a sewage effluent outlet connected to said sewage effluent inlet of said contact chamber.
Claim 4
Dependent Claim
34 words
The apparatus of claim 1 in which said sewage effluent inlet of said contact chamber has a pipe extending downward into the liquid sewage effluent in said chamber in normal operation of the apparatus.
Claim 5
Dependent Claim
68 words
The apparatus of claim 1 in which said fluid outlet communicates with said chamber adjacent the lower end of the liquid zone to provide a generally downward flow of liquid sewage effluent through the liquid zone in opposition to the generally upward flow of ozone from said diffuser through the liquid zone, whereby the duration of the contact of ozone with sewage effluent in said chamber is increased.
Claim 6
Dependent Claim
83 words
The apparatus of claim 1 which also comprises a second vent connected to said contact chamber and having an outlet communicating with the atmosphere and an inlet communicating with the liquid zone in said chamber both below the level of the liquid sewage effluent in said chamber during normal operation of the apparatus and above the point at which said sewage inlet discharges into said chamber to provide an escape vent for the ozone in said chamber if said tile field becomes plugged.
Claim 7
Dependent Claim
68 words
The apparatus of claim 2 in which said fluid outlet communicates with said chamber adjacent the lower end of the liquid zone to provide a generally downward flow of liquid sewage effluent through the liquid zone in opposition to the generally upward flow of ozone from said diffuser through the liquid zone, whereby the duration of the contact of ozone with sewage effluent in said chamber is increased.
Claim 8
Dependent Claim
68 words
The apparatus of claim 3 in which said fluid outlet communicates with said chamber adjacent the lower end of the liquid zone to provide a generally downward flow of liquid sewage effluent through the liquid zone in opposition to the generally upward flow of ozone from said diffuser through the liquid zone, whereby the duration of the contact of ozone with sewage effluent in said chamber is increased.
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) | 1975-08-01 | 1976-01-31 | 1976-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-01 | 1980-01-31 | 1980-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-01 | 1984-01-31 | 1984-08-01 | $7700.00 | Window Closed / Lapsed |