US3886065A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Waste water treatment plant with balanced load
Assignee: Kappe Associates Inc
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Filing: 1974-02-15
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Granted: 1975-05-27
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Expires: 1994-02-15
Abstract
Abstract A waste water treatment plant that receives waste water at a widely fluctuating flow rate, discharges the treated water at a much more uniform, balanced or averaged flow rate. The aeration and clarification tanks themselves are used to store the excess at peak loads at a higher water level; and a conduit that discharges from the clarification tank has metering openings therethrough to restrict the discharge of liquid from the clarification tank. Thus the liquid level in the aeration and clarification tanks will rise or fall with fluctuations in waste flow to the treatment plant; but the treated water will leave the plant at a much more uniform flow rate.
Inventors
- 👤 Stanley E Kappe
- 👤 Dick C Heil
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:34
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/006
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
138 words
A METHOD OF BALANCING THE LOAD OF A WASTE WATER TREATMENT PLANT WHICH INCLUDES AN AERATION TANK AND A CLARIFIER TANK, COMPRISING FEEDING WASTE WATER TO THE AERATION TANK AT A FLOW RATE THAT VARIES BETWEEN A MAXIMUM AND A MINIMUM ABOVE AND BELOW A THE CLARIFIER TANK TREATED WASTE WATER AT SAID PREDETERMINED FLOW RATE FROM A PREDETERMINED LEVEL IN SAID CLARIFIER TANK SPACED BELOW THE TOP OF SAID CLARIFIER TANK, ACCUMULATING AND STORING IN THE AERATION TANK AND CLARIFIER TANK ABOVE SAID LEVEL WASTE WATER THAT FLOWS INTO AERATION TANK IN EXCESS OF THAT WHICH FLOWS INTO THE AERATION TANK AT SAID PREDETERMINED FLOW RATE, WITHDRAWING SAID WASTE WATER AT SAID PREDETERMINED FLOW RATE THROUGH A PLURALITY OF OPENINGS AT SAID LEVEL, AND MAINTAINING THE LIQUID LEVELS IN SAID AERATION AND CLARIFIER TANKS SUBSTANTIALLY THE SAME.
Claim 2
Dependent Claim
49 words
A method as claimed in claim 1, and withdrawing at a second level above said first level but below said top of the tank waste water at a flow rate equal to the rate at which the flow of waste water into the tank exceeds said predetermined flow rate.
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) | 1978-05-26 | 1978-11-25 | 1979-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-26 | 1982-11-25 | 1983-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-26 | 1986-11-25 | 1987-05-27 | $7700.00 | Window Closed / Lapsed |