Wastewater treatment system and method
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United States of America Patent
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Nov 25, 2008
Grant Date -
Jul 26, 2007
app pub date -
Jan 25, 2006
filing date -
Jan 25, 2006
priority date (Note) -
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Abstract
The invention is directed to a wastewater treatment system having an anoxic biological treatment zone, an aerobic biological treatment zone and a separator. The concentration of oxygen in streams within the system is strategically managed for improved removal of nutrient from the wastewater. A source of biodegradable carbon may be introduced to reduce the concentration of oxygen within the system. An effective treatment time under anoxic or aerobic conditions may further be varied.
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