US3892640A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of purification of waste water produced from the packing of meat and aquatic animals
Assignee: ZENKOKU REITOGYONIKU KYOKAI
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Filing: 1973-03-27
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Granted: 1975-07-01
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Expires: 1993-03-27
Abstract
Abstract A method of purifying the contaminated waste water that is produced in the slaughter and processing of livestock and aquatic animals, said method comprising adding to said waste water at least one electrolyte selected from the group consisting of the halides, halogen acid salts and nitrates of the alkali metals, alkaline earth metals and ammonium in an amount such that the concentration of said electrolyte in the waste water is 0.03-1.7% by weight, passing a direct-current electricity through the electrolyte-added waste water to effect its electrolysis, and thereafter separating the precipitated solid matter from the waste water.
Inventors
- 👤 Motohiro Furuta
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 06:04
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/46; C02F1/461; C02F1/46104; C02F1/467; C02F1/4672; C02F1/4674; C02F1/46109; C02F2001/46119; C02F2001/46133; C02F2103/00; C02F2103/22; C02F2201/00; C02F2201/46; C02F2201/461; C02F2201/46105; C02F2201/4618
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
116 words
A METHOD OF PURIFYING THE CONTAMINATED WASTE WATER THAT IS PRODUCED IN THE SLAUGHTER AND PROCESSING OF LIVESTOCK AND AQUATIC ANIMALS AND CONTAINING WATER-SOLUBLE COLLOIDALLY DISPERSED MATERIALS SELECTED FROM AT LEAST ONE OF WATER SOLUBLE PROTEIN, VISCERAL MATTER OR BLOOD, SAID METHOD COMPRISING PASSING SAID WASTE WATER THROUGH THE COMPARTMENTS OF AT LEAST ONE ELECTROLYTIC TANK CONTAINING A PLURALITY OF COMPARTMENTS, EACH COMPARTMENT SEPARATED FROM THE NEXT ADJACENT COMPARTMENT BY AN ELECTRICALLY INSULATED PARTITIONING PLATE, EACH COMPARTMENT CONTAINING AT LEAST ONE PAIR OF ELECTRODE PLATES COMPRISING A SOLID METALLIC ANODE SELECTED FROM IRON, STAINLESS STEEL OR ALUMINUM AND A CATHODE, ADDING TO SAID WASTE WATER AT LEAST ONE ELECTROLYTE SELECTED FROM THE GROUP CONSISTING OF THE
Claim 2
Independent Claim
116 words
A METHOD OF PURIFYING THE CONTAMINATED WASTE WATER THAT IS PRODUCED IN THE SLAUGHTER AND PROCESSING OF LIVESTOCK AND AQUATIC ANIMALS AND CONTAINING WATER-SOLUBLE COLLOIDALLY DISPERSED MATERIALS SELECTED FROM AT LEAST ONE OF WATER SOLUBLE PROTEIN, VISCERAL MATTER OR BLOOD, SAID METHOD COMPRISING PASSING SAID WASTE WATER THROUGH THE COMPARTMENTS OF AT LEAST ONE ELECTROLYTIC TANK CONTAINING A PLURALITY OF COMPARTMENTS, EACH COMPARTMENT SEPARATED FROM THE NEXT ADJACENT COMPARTMENT BY AN ELECTRICALLY INSULATED PARTITIONING PLATE, EACH COMPARTMENT CONTAINING AT LEAST ONE PAIR OF ELECTRODE PLATES COMPRISING A SOLID METALLIC ANODE SELECTED FROM IRON, STAINLESS STEEL OR ALUMINUM AND A CATHODE, ADDING TO SAID WASTE WATER AT LEAST ONE ELECTROLYTE SELECTED FROM THE GROUP CONSISTING OF THE
Claim 3
Dependent Claim
12 words
The method according to claim 1 wherein said electrolyte is sodium chloride.
Claim 4
Dependent Claim
29 words
The method according to claim 1 wherein said electrolyte is added in an amount such that the concentration of the electrolyte is 0.3 - 0.5 % by weight. -
Claim 5
Dependent Claim
156 words
The method according to claim 1 wherein the waste water is passed through at least three of said electrolytic tanks comprising adding a prescribed amount of the waste water to a first tank, adding the electrolyte thereto and then commencing the electrolysis of waste water in said first tank; starting the addition of waste water to a second tank during the time the electrolysis is proceeding in said first tank; completing the electrolysis of waste waster in said first tank by the time said second tank becomes full; adding the electrolyte to the waste water-filled second tank and commencing electrolysis of the waste water therein; discharging the treated waste water from said first tank and filling a third tank with waste waster during the time the electrolysis of waste water in said second tank is proceeding, and thereafter repeating the foregoing operations in the sequence given to thereby effect the continuous purification of the waste water.
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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) | 1978-06-30 | 1978-12-30 | 1979-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-30 | 1982-12-30 | 1983-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-30 | 1986-12-30 | 1987-07-01 | $7700.00 | Window Closed / Lapsed |