APPARATUS FOR REMOVAL OF DISSOLVED OR SUSPENDED SOLIDS IN WASTE WATER

• US 3,865,711 A
• Filed: 11/23/1973
• Issued: 02/11/1975
• Est. Priority Date: 10/20/1971
• Status: Expired due to Term

• Current Assignee: Metal Resources
• Original Assignee: Harry T. Anderson
• Inventors: Anderson, Harry T.
• Primary Examiner(s): Tufariello, T. M.
• Application Number:
  US05/418,429
• Time in Patent Office: 445 Days
• Field of Search: 204/186-191,302-308,149-152,275,284,292,294 210/44,221,13
• US Class Current: 204/600
• CPC Class Codes: B01D 17/047 with separation aids
• CPC Class Codes: B01D 17/06 Separation of liquids from each other by electricity
• CPC Class Codes: C02F 1/54 using organic material
• CPC Class Codes: C10G 33/02 with electrical or magnetic means

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.

Claims

1. 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.

2. 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.

3. 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.

4. The apparatus of claim 1 wherein the anodes are high silicon iron.

5. The apparatus of claim 1 wherein the anodes are parallel to the floor of the container.