Liquid purification or separation – Processes – Making an insoluble substance or accreting suspended...
Reexamination Certificate
2005-02-01
2005-02-01
Lithgow, Thomas M. (Department: 1724)
Liquid purification or separation
Processes
Making an insoluble substance or accreting suspended...
C210S167150, C210S221200, C261S079200, C261S156000, C261SDIG007, C366S336000, C366S338000, C366S341000, C119S264000
Reexamination Certificate
active
06849189
ABSTRACT:
The present invention includes a horizontal foam fractionation protein skimmer for removing organic waste material (dissolved organic compounds) from organic loaded water. The protein skimmer includes a horizontal reaction chamber connected to a foam collection chamber in which protein-loaded foam containing organic waste material is collected. The reaction chamber is comprised of a series of horizontally-directed, nested, concentric tubes for increasing the number and decreasing the size of bubbles to facilitate efficient removal of dissolved organic compounds. Each horizontal tube has either one or several small openings that are offset from the openings on the adjacent tube at a small angle, typically 10°. The openings are formed by either a single slit that runs along the length of each tube, or by a series of holes that runs along the length of each tube. Organic-loaded water is pumped through tubing into the reaction chamber. As water moves through the tubing, gas (e.g., air) is drawn in by eductors, creating a gas/water mixture. The gas/water mixture is distributed into the horizontal reaction chamber through a lateral manifold that tangentially injects the gas/water mixture at approximately equidistant points along the length of the reaction chamber. The gas/water mixture enters the largest of the nested horizontal tubes and is forced through the small opening(s) into the next smaller diameter tube.Water travels circumferentially through adjacent tubes in a counter-current movement. The most central concentric tube carries the water out of the reaction chamber into the foam collection chamber. The water left behind is considerably more pure and free of contaminates and exits through tubing in the bottom of the foam collection chamber. The horizontal protein skimmer of the present invention is sectioned into individual components that facilitate transport and on-site assembly.
REFERENCES:
patent: 3770384 (1973-11-01), Brumfield
patent: 3772192 (1973-11-01), Huckstedt et al.
patent: 4043539 (1977-08-01), Gilmer et al.
patent: 4070302 (1978-01-01), Chatterton
patent: 5078867 (1992-01-01), Danner
patent: 5800704 (1998-09-01), Hansen
Curlee Richard Kevin
Paetsch Richard H.
Lithgow Thomas M.
Mote Marine Laboratory
Walsh Catherine J.
Walsh Cecilia A.
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