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US3841998A Expired / Lapsed US ⏱️ 0.0 years remaining

Aerobic wastewater treatment process with partial reuse and infrequent dosing to soil

Assignee: Environment One Corp
•
Filing: 1972-12-07
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Granted: 1974-10-15
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Expires: 1992-12-07
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Abstract

Abstract 1. A METHOD FOR TREATING WASTE MATERIAL RECEIVED FROM A DWELLING UNIT HAVING A RECYCLED WATER SUPPLY IN A PLURALITY OF TREATMENT AND STORAGE TANKS COMPRISING THE FOLLOWING STEPS IN ORDER: COLLECTING FLUID WASTE TO BE TREATED OVER AN INTERVAL OF TIME IN A HOLDING TANK; TRANSFERRING THE FLUID WASTE TO A TREATMENT TANK; AEROBICALLY TREATING THE QUANTITY OF WASTE MATERIAL COLLECTED IN THE TREATMENT TANK AND AERATING SAID QUANTITY OF WASTE MATETIAL FOR A PERIOD OF TIME TO ENHANCE THE AEROBIC TREATMENT; ADMITTING A FLOCCULATING SUBSTANCE INTO THE TREATMENT TANK AND MIXING THE FLOCCULATING SUBSTANCE INTO THE AEROBICALLY TREATED WASTE MATERIAL; PROVIDING A SUFFICIENT QUIESCENT PERIOD OF TIME FOLLOWING ADMISSION AND MIXING OF THE FLOCCULATING SUBSTANCE FOR SETTLING THE SEPARATING OF SAID WASTE MATERIAL WITH AN EFFLUENT TO THE TOP AND SLUDGE OF THE BOTTOM OF THE TREATMENT TANK; DRAWING OFF A SUBSTANTIAL QUANTITY OF EFFLUENT FROM THE UPPER PORTION OF THE TREATMENT TANK AND PASSING SAID EFFLUENT TO AN EFFLUENT STORAGE TANK WHERE A PORTION OF SAID EFFLUENT IS SUPPLIED TO SAID RECYLED WATER SUPPLY AND ANOTHER PORTION IS SUPPLIED TO A DRAINAGE SYSTEM IN INFREQUENT DOSES; REMOVING A PORTION OF THE SLUDGE IN EXCESS OF A PREDETERMINED QUANTITY FROM THE LOWER PORTION OF THE TREATMENT TANK AND PASSING THE REMOVED SLUDGE TO A DIGESTER; TREATING THE SLUDGE IN THE DIGESTER AND PROVIDING A SETTLING QUIESCENT PERIOD FRO THE REMOVED SLUDGE AND ANY CARRIED LIQUID TO SEPARATE THE CARRIED LIQUID FROM SLUDGE; AND THEREAFTER RETURNING THE SEPARATED CARRIED LIQUID BACK TO SAID HOLDING TANK FOR REPEATED AEROBIC TREATMENT IN SAID TREATMENT TANK.

Inventors

  • 👤 R Farrell

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-02 00:43
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/52; C02F1/54; C02F1/56; B; B01; B01D; B01D21/00; B01D21/0018; B01D21/0021; B01D21/01; B01D21/02; B01D21/30; B01D21/34; C02F3/00; C02F3/006; C02F3/02; C02F3/12; C02F3/1205; C02F3/1215; C02F3/1236; C02F3/1242; C02F3/28; C02F3/2866; C02F3/2886; E; E03; E03D; E03D5/00; E03D5/016; B01D21/302; C02F2001/007; C02F2103/00; C02F2103/005; C02F2303/00; C02F2303/02; Y; Y02; Y02W; Y02W10/00; Y02W10/10

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 263 words
A METHOD FOR TREATING WASTE MATERIAL RECEIVED FROM A DWELLING UNIT HAVING A RECYCLED WATER SUPPLY IN A PLURALITY OF TREATMENT AND STORAGE TANKS COMPRISING THE FOLLOWING STEPS IN ORDER: COLLECTING FLUID WASTE TO BE TREATED OVER AN INTERVAL OF TIME IN A HOLDING TANK; TRANSFERRING THE FLUID WASTE TO A TREATMENT TANK; AEROBICALLY TREATING THE QUANTITY OF WASTE MATERIAL COLLECTED IN THE TREATMENT TANK AND AERATING SAID QUANTITY OF WASTE MATETIAL FOR A PERIOD OF TIME TO ENHANCE THE AEROBIC TREATMENT; ADMITTING A FLOCCULATING SUBSTANCE INTO THE TREATMENT TANK AND MIXING THE FLOCCULATING SUBSTANCE INTO THE AEROBICALLY TREATED WASTE MATERIAL; PROVIDING A SUFFICIENT QUIESCENT PERIOD OF TIME FOLLOWING ADMISSION AND MIXING OF THE FLOCCULATING SUBSTANCE FOR SETTLING THE SEPARATING OF SAID WASTE MATERIAL WITH AN EFFLUENT TO THE TOP AND SLUDGE OF THE BOTTOM OF THE TREATMENT TANK; DRAWING OFF A SUBSTANTIAL QUANTITY OF EFFLUENT FROM THE UPPER PORTION OF THE TREATMENT TANK AND PASSING SAID EFFLUENT TO AN EFFLUENT STORAGE TANK WHERE A PORTION OF SAID EFFLUENT IS SUPPLIED TO SAID RECYLED WATER SUPPLY AND ANOTHER PORTION IS SUPPLIED TO A DRAINAGE SYSTEM IN INFREQUENT DOSES; REMOVING A PORTION OF THE SLUDGE IN EXCESS OF A PREDETERMINED QUANTITY FROM THE LOWER PORTION OF THE TREATMENT TANK AND PASSING THE REMOVED SLUDGE TO A DIGESTER; TREATING THE SLUDGE IN THE DIGESTER AND PROVIDING A SETTLING QUIESCENT PERIOD FRO THE REMOVED SLUDGE AND ANY CARRIED LIQUID TO SEPARATE THE CARRIED LIQUID FROM SLUDGE; AND THEREAFTER RETURNING THE SEPARATED CARRIED LIQUID BACK TO SAID HOLDING TANK FOR REPEATED AEROBIC TREATMENT IN SAID TREATMENT TANK.
Claim 2
Independent Claim 263 words
A METHOD FOR TREATING WASTE MATERIAL RECEIVED FROM A DWELLING UNIT HAVING A RECYCLED WATER SUPPLY IN A PLURALITY OF TREATMENT AND STORAGE TANKS COMPRISING THE FOLLOWING STEPS IN ORDER: COLLECTING FLUID WASTE TO BE TREATED OVER AN INTERVAL OF TIME IN A HOLDING TANK; TRANSFERRING THE FLUID WASTE TO A TREATMENT TANK; AEROBICALLY TREATING THE QUANTITY OF WASTE MATERIAL COLLECTED IN THE TREATMENT TANK AND AERATING SAID QUANTITY OF WASTE MATETIAL FOR A PERIOD OF TIME TO ENHANCE THE AEROBIC TREATMENT; ADMITTING A FLOCCULATING SUBSTANCE INTO THE TREATMENT TANK AND MIXING THE FLOCCULATING SUBSTANCE INTO THE AEROBICALLY TREATED WASTE MATERIAL; PROVIDING A SUFFICIENT QUIESCENT PERIOD OF TIME FOLLOWING ADMISSION AND MIXING OF THE FLOCCULATING SUBSTANCE FOR SETTLING THE SEPARATING OF SAID WASTE MATERIAL WITH AN EFFLUENT TO THE TOP AND SLUDGE OF THE BOTTOM OF THE TREATMENT TANK; DRAWING OFF A SUBSTANTIAL QUANTITY OF EFFLUENT FROM THE UPPER PORTION OF THE TREATMENT TANK AND PASSING SAID EFFLUENT TO AN EFFLUENT STORAGE TANK WHERE A PORTION OF SAID EFFLUENT IS SUPPLIED TO SAID RECYLED WATER SUPPLY AND ANOTHER PORTION IS SUPPLIED TO A DRAINAGE SYSTEM IN INFREQUENT DOSES; REMOVING A PORTION OF THE SLUDGE IN EXCESS OF A PREDETERMINED QUANTITY FROM THE LOWER PORTION OF THE TREATMENT TANK AND PASSING THE REMOVED SLUDGE TO A DIGESTER; TREATING THE SLUDGE IN THE DIGESTER AND PROVIDING A SETTLING QUIESCENT PERIOD FRO THE REMOVED SLUDGE AND ANY CARRIED LIQUID TO SEPARATE THE CARRIED LIQUID FROM SLUDGE; AND THEREAFTER RETURNING THE SEPARATED CARRIED LIQUID BACK TO SAID HOLDING TANK FOR REPEATED AEROBIC TREATMENT IN SAID TREATMENT TANK.

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) 1977-10-14 1978-04-15 1978-10-15 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1981-10-14 1982-04-15 1982-10-15 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1985-10-14 1986-04-15 1986-10-15 $7700.00 Window Closed / Lapsed

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