US4069152A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Clarification of clay containing water
Assignee: Individual
•
Filing: 1976-04-26
•
Granted: 1978-01-17
•
Expires: 1996-04-26
Abstract
Abstract Clay-containing water from processing of oil or bituminous sands or from oil or gas well drilling sites is clarified by treating the water with a sufficient amount of an alkali permanganate to effect adequate clarification. The water may also be treated with an anionic and/or non-ionic polyelectrolyte to expedite the clarification of the water.
Inventors
- 👤 Gerald A. Specken
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:18
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/52; C02F1/5236; C02F1/54; C02F1/72
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
77 words
A process for the clarification of clay-containing water, said water being selected from the group consisting of water from processing of bitumnous sands and water from oil or gas well drilling sites, said water containing between about 500 to about 100,000 ppm by weight of suspended clay particles, including treating the water with between about 0.5 to about 500 ppm of an alkali permanganate to cause coagulation and subsequent settling of substantially all said suspended clay particles.
Claim 2
Dependent Claim
77 words
A process for the clarification of clay-containing water, said water being selected from the group consisting of water from processing of bitumnous sands and water from oil or gas well drilling sites, said water containing between about 500 to about 100,000 ppm by weight of suspended clay particles, including treating the water with between about 0.5 to about 500 ppm of an alkali permanganate to cause coagulation and subsequent settling of substantially all said suspended clay particles.
Claim 3
Dependent Claim
26 words
A process according to claim 1 wherein the clay-containing water is treated with the alkali permanganate before any other chemical clarifying treatment is carried out therewith.
Claim 4
Dependent Claim
13 words
A process according to claim 1 wherein the alkali permanganate is potassium permanganate.
Claim 5
Dependent Claim
22 words
A process according to claim 1 wherein the permanganate concentration is in the range of from about 20 to about 100 ppm.
Claim 6
Dependent Claim
42 words
A process according to claim 1 wherein the clay-containing water is also treated with between about 1 and about 100 ppm of at least one polyelectrolyte selected from the group consisting of anionic and non-ionic polyelectrolytes to expedite said coagulation and settling.
Claim 7
Dependent Claim
15 words
A process according to claim 5 wherein the polyelectrolyte is a medium strength anionic polyelectrolyte.
Claim 8
Dependent Claim
17 words
A process according to claim 6 wherein the medium strength anionic polyelectrolyte is of the polyacrylamide type.
Claim 9
Dependent Claim
22 words
A process according to claim 5 wherein the polyelectrolyte concentration is in the range of from about 1.0 to about 20 ppm.
Claim 10
Dependent Claim
18 words
A process according to claim 5 wherein the polyelectrolyte is added to clay-containing water immediately after the permanganate.
Claim 11
Dependent Claim
100 words
A process for the clarification of clay-containing water, said water being selected from the group consisting of water from processing of bituminous sands and water from oil or gas well drilling sites, said water containing between about 500 and about 100,000 ppm by weight of suspended clay particles, including treating the water with between about 0.5 and about 500 ppm of potassium permanganate and with between about 1 and about 100 ppm of at least one polyelectrolyte selected from the group consisting of anionic and non-ionic polyelectrolytes to cause coagulation and subsequent settling of substantially all said suspended clay particles.
Claim 12
Dependent Claim
100 words
A process for the clarification of clay-containing water, said water being selected from the group consisting of water from processing of bituminous sands and water from oil or gas well drilling sites, said water containing between about 500 and about 100,000 ppm by weight of suspended clay particles, including treating the water with between about 0.5 and about 500 ppm of potassium permanganate and with between about 1 and about 100 ppm of at least one polyelectrolyte selected from the group consisting of anionic and non-ionic polyelectrolytes to cause coagulation and subsequent settling of substantially all said suspended clay particles.
Claim 13
Dependent Claim
13 words
A process according to claim 10 wherein the polyelectrolyte is an anionic polyelectrolyte.
Claim 14
Dependent Claim
15 words
A process according to claim 11 wherein the anionic polyelectrolyte is of the polyacrylamide type.
Claim 15
Dependent Claim
108 words
A process for the clarification of clay-containing water, said water being selected from the group consisting of water from processing of bituminous sands and water from oil or gas well drilling sites, said water containing between about 500 and about 100,000 ppm by weight of suspended clay particles, and said clay particles having hydrocarbons adsorbed thereon, including treating the water with between about 0.5 and about 500 ppm of potassium permanganate, and with between about 1 and about 100 ppm of at least one polyelectrolyte selected from the group consisting of anionic and non-ionic polyelectrolytes to cause coagulation and subsequent settling of substantially all said suspended clay particles.
Claim 16
Dependent Claim
108 words
A process for the clarification of clay-containing water, said water being selected from the group consisting of water from processing of bituminous sands and water from oil or gas well drilling sites, said water containing between about 500 and about 100,000 ppm by weight of suspended clay particles, and said clay particles having hydrocarbons adsorbed thereon, including treating the water with between about 0.5 and about 500 ppm of potassium permanganate, and with between about 1 and about 100 ppm of at least one polyelectrolyte selected from the group consisting of anionic and non-ionic polyelectrolytes to cause coagulation and subsequent settling of substantially all said suspended clay particles.
Claim 17
Dependent Claim
13 words
A process according to claim 13 wherein the polyelectrolyte is an anionic polyelectrolyte.
Claim 18
Dependent Claim
15 words
A process according to claim 14 wherein the anionic polyelectrolyte is of the polyacrylamide type.
Claim 19
Dependent Claim
38 words
A process according to claim 14 wherein the permanganate concentration is in the range of from about 20 to about 100 ppm and the polyelectrolyte concentration is in the range of from about 1.0 to about 20 ppm.
Claim 20
Dependent Claim
19 words
A process according to claim 16 wherein the polyelectrolyte is added to the clay-containing water immediately after the permanganate.
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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) | 1981-01-16 | 1981-07-18 | 1982-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-01-16 | 1985-07-18 | 1986-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-01-16 | 1989-07-18 | 1990-01-17 | $7700.00 | Window Closed / Lapsed |