Liquid purification or separation – With alarm – indicator – register – recorder – signal or... – Material level or thickness responsive
Reexamination Certificate
2007-08-21
2009-11-24
Drodge, Joseph W (Department: 1797)
Liquid purification or separation
With alarm, indicator, register, recorder, signal or...
Material level or thickness responsive
C210S096100, C210S101000, C210S150000, C210S220000, C210S221200, C261S075000, C366S101000, C366S132000, C366S136000, C366S151200, C366S153100, C366S165100, C366S165500
Reexamination Certificate
active
07622036
ABSTRACT:
A system is disclosed herein for treating wastewater liquid by utilizing aerobic biological species. The contaminated wastewater stream is pretreated in a dissolved air flotation system to remove suspended solid waste, including large particles such as fats, grease, and physically emulsified oils. The purified wastewater containing dissolved waste is thereafter oxygenated and further decontaminated in a bioreactor tank. Biological species in the bioreactor tank consume oxygen and perform bodily functions that converts dissolved waste into easily removable carbon dioxide and suspend solids. Oxygen consumed by the biological species is replenished by pumping the wastewater though a liquid-oxygen mixer. A controller regulates the speed of the pump based on real-time oxygen concentration measurements provided by a corresponding oxygen probe disposed within the wastewater in the bioreactor tank.
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Drodge Joseph W
Kelly Lowry & Kelley LLP
World Water Technologies, LLC
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