US3849304A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for the primary and secondary treatment of wastewater in a unitary apparatus
Assignee: Siemens Water Technologies Holding Corp
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Filing: 1973-08-09
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Granted: 1974-11-19
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Expires: 1993-08-09
Abstract
Abstract A method utilizing a composite apparatus for the treatment of wastewater to remove settleable and floatable solids and to remove and oxidize organic matter including a treatment tank having at least two horizontally adjacent bays, each of the bays having an upper biological treatment zone separated by a horizontally disposed baffle from a lower settling zone. Raw wastewater enters the lower settling zone of one of the bays wherein settleable and floatable solids are removed, and then turns vertically to flow in a reverse direction through the upper biological treatment zone of the first bay. From the first bay the wastewater is horizontally directed into and through the biological treatment zone of the second bay and is subsequently vertically directed into and through the lower settling zone of the second bay to the weir for collection of the treated fluid. Preferably, two secondary bays, each receiving about one half of the wastewater flow from the first bay, are provided.
Inventors
- 👤 W Torpey
- 👤 R Sullivan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:30
CPC Classifications
C; C02; C02F; C02F3/00; C02F3/02; C02F3/08; C02F3/082; C02F3/12; C02F3/1205; C02F3/121; C02F3/1236; C02F3/1257; Y; Y02; Y02W; Y02W10/00; Y02W10/10
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
229 words
METHOD FOR THE CONTINUOUS TREATMENT OF WASTEWATER COMPRISING A. PROVIDING A TREATMENT TANK HAVING A PRIMARY BAY AND AT LEAST ONE SECONDARY BAY HORIZONTALLY ADJACENT TO SAID PRIMARY BAY, B. EACH OF SAID BAYS INCLUDING A LOWER SETTLING ZONE AND A VERTICALLY ADJACENT UPPER BIOLOGICAL TREATMENT ZONE, C. INTRODUCING WASTEWATER THROUGH THE SETTLING ZONE OF SAID PRIMARY BAY, D. CREATING A FLOW OF WASTEWATER THROUGH THE SETTLING ZONE OF SAID PRIMARY BAY, E. VERTICALLY DIRECTING SAID WASTEWATER FROM THE SETTLING ZONE TO THE UPPER BIOLOGICAL TREATMENT ZONE OF SAID PRIMARY BAY, F. CREATING A FLOW OF WASTEWATER THROUGH THE SETTLING ZONE OF MENT ZONE OF SAID PRIMARY BAY COUNTERCURRENT TO THE DIRECTION OF WASTEWATER FLOW THROUGH THE SETTLING ZONE OF SAID PRIMARY BAY, G. HIORIZONTALLY DIRECTING WASTEWATER FROM THE BIOLOGICAL TREATMENT ZONE OF SAID PRIMARY BAY TO THE BIOLOGICAL TREATMENT ZONE OF SAID SECONDARY BAY, H. CREATING A FLOW OF SAID WASTEWATER THROUGH THE BIOLOGICAL TREATMENT ZONE OF SAID SECONDARY BAY, I. VERTICALLY DIRECTING SAID WASTEWATER FROM THE BIOLOGICAL TREATMENT ZONE OF SAIS SECONDARY BAY INTO THE LOWER SETTLING ZONE OF SAID SECONDARY BAY, J. CREATING A FLOW OF SAID WASTEWATER THROUGH THE SETTLING ZONE OF SAID SECONDARY BAY COUNTERCURRENT TO THE DIRECTION OF WASTEWATER FLOW THROUGH THE BIOLOGICAL TREATMENT ZONE OF SAID SECONDARY BAY, AND K. REMOVING SAID WASTE WATER FROM THE SETTLING ZONE OF SAID SECONDARY BAY.
Claim 2
Dependent Claim
229 words
METHOD FOR THE CONTINUOUS TREATMENT OF WASTEWATER COMPRISING A. PROVIDING A TREATMENT TANK HAVING A PRIMARY BAY AND AT LEAST ONE SECONDARY BAY HORIZONTALLY ADJACENT TO SAID PRIMARY BAY, B. EACH OF SAID BAYS INCLUDING A LOWER SETTLING ZONE AND A VERTICALLY ADJACENT UPPER BIOLOGICAL TREATMENT ZONE, C. INTRODUCING WASTEWATER THROUGH THE SETTLING ZONE OF SAID PRIMARY BAY, D. CREATING A FLOW OF WASTEWATER THROUGH THE SETTLING ZONE OF SAID PRIMARY BAY, E. VERTICALLY DIRECTING SAID WASTEWATER FROM THE SETTLING ZONE TO THE UPPER BIOLOGICAL TREATMENT ZONE OF SAID PRIMARY BAY, F. CREATING A FLOW OF WASTEWATER THROUGH THE SETTLING ZONE OF MENT ZONE OF SAID PRIMARY BAY COUNTERCURRENT TO THE DIRECTION OF WASTEWATER FLOW THROUGH THE SETTLING ZONE OF SAID PRIMARY BAY, G. HIORIZONTALLY DIRECTING WASTEWATER FROM THE BIOLOGICAL TREATMENT ZONE OF SAID PRIMARY BAY TO THE BIOLOGICAL TREATMENT ZONE OF SAID SECONDARY BAY, H. CREATING A FLOW OF SAID WASTEWATER THROUGH THE BIOLOGICAL TREATMENT ZONE OF SAID SECONDARY BAY, I. VERTICALLY DIRECTING SAID WASTEWATER FROM THE BIOLOGICAL TREATMENT ZONE OF SAIS SECONDARY BAY INTO THE LOWER SETTLING ZONE OF SAID SECONDARY BAY, J. CREATING A FLOW OF SAID WASTEWATER THROUGH THE SETTLING ZONE OF SAID SECONDARY BAY COUNTERCURRENT TO THE DIRECTION OF WASTEWATER FLOW THROUGH THE BIOLOGICAL TREATMENT ZONE OF SAID SECONDARY BAY, AND K. REMOVING SAID WASTE WATER FROM THE SETTLING ZONE OF SAID SECONDARY BAY.
Claim 3
Dependent Claim
27 words
The method of claim 1, wherein said primary bay is disposed between two secondary bays, each of said secondary bays being horizontally adjacent to said primary bay.
Claim 4
Dependent Claim
42 words
The method of claim 2, wherein said wastewater is split into substantially equal portions after passing through the biological treatment zone of said primary bay, each of said portions being directed to the biological treatment zone of one of said secondary bays.
Claim 5
Dependent Claim
31 words
The method of claim 1, wherein each of said biological treatment zones includes a plurality of partially submerged rotatable contactor members having surface suitable for the growth of aerobic biological slimes.
Claim 6
Dependent Claim
22 words
The method of claim 4, wherein said surface in disposed parallel to the direction of wastewater flow through said biological treatment zones.
Claim 7
Dependent Claim
25 words
The method of claim 4, wherein said contactor members are rotated at a peripheral velocity adequate for the growth and maintenance of aerobic biological slimes.
Claim 8
Dependent Claim
77 words
The method of claim 1, wherein said wastewater is vertically directed from the lower settling zone to the biological treatment zone of said primary bay and from the biological treatment zone of said secondary bay to the lower settling zone of said secondary bay by a longitudinal baffle disposed between said settling and biological treatment zones across the width of each of said bays and along a substantial protion of the length of each of said bays.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-11-18 | 1978-05-20 | 1978-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-18 | 1982-05-20 | 1982-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-18 | 1986-05-20 | 1986-11-19 | $7700.00 | Window Closed / Lapsed |