US3865711A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for removal of dissolved or suspended solids in waste water
Assignee: TETRA RESOURCES Inc A CORP OF
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Filing: 1973-11-23
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Granted: 1975-02-11
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Expires: 1993-11-23
Abstract
Abstract Waste water containing oil and water emulsions and dissolved or suspended solids is de-emulsified and clarified by creating a three dimensional anolyte stream resulting from the careful placement of anodes and impressing direct or galvanic current through the water. Waste water is first contacted with an anode system in a restricted zone so as to give substantially all of the waste water a rapid pH change of several units and is then conveyed to a second zone wherein a three dimensional anolyte stream is formed causing the oily particles to float to the surface of the water where they can be skimmed off.
Inventors
- 👤 Harry T Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:46
CPC Classifications
C; C10; C10G; C10G33/00; C10G33/02; B; B01; B01D; B01D17/00; B01D17/02; B01D17/04; B01D17/047; B01D17/06; C02; C02F; C02F1/00; C02F1/52; C02F1/54
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
123 words
An apparatus for treating water-oil emulsion systems comprising a container having an entry conduit and an exit conduit and having a baffle across the width of the container and positioned nearer the inlet end than the discharge end thereby dividing said container into an inlet zone and a discharge zone, the lower section of said baffle being substantially parallel to the inlet end of the container and the upper section of said baffle being inclined toward the discharge end of said container, cylindrical anodes in the inlet zone spaced transverse to the longitudinal axis of the container, and cylindrical anodes in the discharge zone spaced parallel to the longitudinal axis of the container at about nearly equal distance apart in the discharge zone.
Claim 2
Independent Claim
123 words
An apparatus for treating water-oil emulsion systems comprising a container having an entry conduit and an exit conduit and having a baffle across the width of the container and positioned nearer the inlet end than the discharge end thereby dividing said container into an inlet zone and a discharge zone, the lower section of said baffle being substantially parallel to the inlet end of the container and the upper section of said baffle being inclined toward the discharge end of said container, cylindrical anodes in the inlet zone spaced transverse to the longitudinal axis of the container, and cylindrical anodes in the discharge zone spaced parallel to the longitudinal axis of the container at about nearly equal distance apart in the discharge zone.
Claim 3
Dependent Claim
33 words
The apparatus claim 1 with at least one rod shaped anode in the discharge zone positioned near and substantially parallel to the baffle and being transverse to the longitudinal axis of the container.
Claim 4
Dependent Claim
38 words
The apparatus of claim 1 wherein the anodes are positioned such that the lowest potential at a point between any adjacent parallel anodes is greater than about 0.6 volts but not substantially in excess of about 3 volts.
Claim 5
Dependent Claim
12 words
The apparatus of claim 1 wherein the anodes are high silicon iron.
Claim 6
Dependent Claim
16 words
The apparatus of claim 1 wherein the anodes are parallel to the floor of the container.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-02-10 | 1978-08-12 | 1979-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-10 | 1982-08-12 | 1983-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-10 | 1986-08-12 | 1987-02-11 | $7700.00 | Window Closed / Lapsed |