Plant for wastewater treatment
Abstract
Abstract A METHOD AND APPARATUS ARE PROVIDED FOR CONVERTING A BASIC UNITARY TANK STRUCTURE INTO A SERIES OF COMMUNICATING TREATMENT ZONES, THROUGH INTRODUCTION OF A SELF-SUPPORTING MODULAR SETTING TANK MEMBER HAVING LIQUID FILLABLE FILLETS AS PART OF THE STRUCTURE SO THAT THE MEMBER MAY BE ANCHORED IN POSITION TO PROVIDE WATERTIGHT TANK MEMBER SEGMENTS WHICH OPERATE AS COOPERATIVE TREATMENT ZONES, THE MODULAR TANK MEMBER PROVIDING THE BASIC SUPPORT STRUCTURE FOR THE AERATION MEANS REQUIRED TO CONVERT AN ADJACENT TANK SEGMENT INTO AN AERATION ZONE AND FOR SUPPORT OF MEANS FOR EFFECTING REMOVAL OF SLUDGE SEPARATED IN THE MODULAR TANK MEMBER FROM MIXED LIQUID RECEIVED FROM THE AERATION ZONE SO THAT PART OF THE SLUDGE CAN BE RETURNED TO THE AERATION TANK AND THE BALANCE DISCHARGED TO ANY ADDITIONAL TREATMENT ZONES AND FOR MEANS BY WHICH CLARIFIED EFFLUENT MAY BE DISCHARGED FROM AN UPPER PORTION OF THE MODULAR MEMBER. D R A W I N G
Inventors
- 👤 Q Hampton
- 👤 E Matras
Bibliographic Details
Claims Analysis
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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) | 1977-08-12 | 1978-02-11 | 1978-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-12 | 1982-02-11 | 1982-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-12 | 1986-02-11 | 1986-08-13 | $7700.00 | Window Closed / Lapsed |