Liquid purification or separation – Processes – Treatment by living organism
Reexamination Certificate
2008-10-30
2011-11-08
Barry, Chester (Department: 1778)
Liquid purification or separation
Processes
Treatment by living organism
C210S611000, C210S195100
Reexamination Certificate
active
08052873
ABSTRACT:
A waste treatment method includes the concentration of selected strains of bacteria in a selected medium in the presence of nutrients and water, under aerobic conditions. This concentrated batch is thereafter discharged for downstream applications in wastewater remediation. The present invention employs a cultivation chamber having inlet ports and a circular vent port that allows for adequate air introduction and heat release. Aeration is achieved by recirculation of the fluid medium from the top of the apparatus through a pipe that runs the length of the inner wall and is specially configured at the top to minimize cell damage. Fluid can be routed tangentially in both the clockwise and counterclockwise directions within the chamber. The conical bottom also has an orifice allowing for recirculation of the fluid medium tangentially to the sidewalls. Upon completion of the batch cultivation, the medium and bacteria are discharged for downstream applications in wastewater remediation of paper mill, chemical plant, oil refinery, and other industrial effluents. The aeration and circulation of the fluids is designed to limit cells shearing and damage yet achieve critical cell mass (e.g. between 107and 1010cfu (colony forming units) per milliliter (ml)) and dissolved oxygen uptake rates (e.g. between about 50 and 1500) during cultivation.
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“Oxygen Solubilities in Fresh Water” downloaded from http://www.engineeringtoolbox.com/oxygen-solubility-water-d—841.html on Sep. 29, 2010.
Duos Bronwyn
Foster Michael Harvey
Guidotti Elizabeth Claire
Smith Kenneth Wayne
Barry Chester
D'Souza Vanessa M.
Environmental Business Specialists, LLC
Garvey, Jr. Charles C.
Garvey, Smith Nehrbass & North, L.L.C.
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