Vertical gas induced flotation cell

Details Vertical gas induced flotation cell Vertical gas induced flotation cell

2007-01-02

2007-01-02

Lithgow, Thomas M. (Department: 1724)

Liquid purification or separation

Processes

Making an insoluble substance or accreting suspended...

C210S708000, C210S718000, C210S712000, C095S253000, C095S261000

Reexamination Certificate

active

10600469

ABSTRACT:
A system for separating oil and/or oily coated solids from an oily water mixture. The system includes an upright vessel having an inlet for introducing oily water in a horizontal pattern. The vessel also has a water outlet in a lower portion of the vessel and an oil outlet. An eductor is positioned within a lower portion of the vessel and is arranged to disseminates small gas bubbles in a radial, substantially horizontal pattern and substantially uniformly over the full cross-sectional area of the vessel. The bubbles migrate upwardly against the downward flow of oily water within the vessel and attach to oil droplets and/or oily coated solids augmenting the buoyancy thereof, and thereby enhancing oily contaminant separation from water. A two-stage oil skimmer bucket is located in a top portion of the vessel by which separated oil is collected and discharged through the oil outlet.

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