Liquid purification or separation – With means to add treating material – Directly applied to separator
Reexamination Certificate
2005-11-15
2005-11-15
Lithgow, Thomas M. (Department: 1724)
Liquid purification or separation
With means to add treating material
Directly applied to separator
C210S205000, C210S206000, C210S090000, C210S295000, C261S079200
Reexamination Certificate
active
06964740
ABSTRACT:
A system for separating particles from a contaminated liquid stream includes an apparatus for mixing the liquid with one or more separation enhancement additives and gases. A pressure reducing device having a flow restrictor element within an enlarged tube receives the mixed liquid and creates bubble laden floccs by reducing the pressure of the liquid stream. The pressure reducing device empties into a bloom chamber of a flotation tank, where the bubble laden floccs are directed upwardly to an upper portion of the flotation tank. The flotation tank is configured such that the bubble laden floccs circulate within the upper portion of the flotation tank until they float to the upper surface, while decontaminated liquid flows to a lower portion of the tank for removal. A skimmer removes the floated contaminated floccs from the upper surface of the flotation tank into a dewatering apparatus.
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Matherly Thomas G.
Morse Dwain E.
Morse Wade O.
Friedman Jerry
Kelly Lowry & Kelley LLP
Lithgow Thomas M.
Morse Dwain E.
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