Apparatus and method for wastewater treatment
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United States of America Patent
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Dec 18, 2007
Grant Date -
Dec 29, 2005
app pub date -
Jun 28, 2005
filing date -
Jun 28, 2004
priority date (Note) -
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status (Latency Note)
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Abstract
A method for treating wastewater. The method comprises: providing a first dose of air to aerate a medium bed; supplying a dose of wastewater to the aerated medium bed; allowing nitrification of the wastewater to occur; allowing denitrification to occur; and providing a subsequent dose of air to the medium bed. A combined aerobic and anaerobic treatment apparatus. The apparatus comprises: a medium bed; a wastewater conduit in fluid communication with the medium bed; an air conduit in fluid communication with the medium bed; and where the combined aerobic and anaerobic treatment apparatus is configured to first allow a dose of wastewater in the medium bed to undergo a nitrification process which is generally aerobic, and then second allow the dose of wastewater in the medium bed to undergo a denitrification process which is generally anaerobic. An apparatus for treating wastewater. The apparatus comprises: means for providing a first dose of air to aerate a medium bed; means for supplying a dose of wastewater to the aerated medium bed; means for allowing nitrification of the wastewater to occur; means for allowing denitrification to occur; and means for providing a subsequent dose of air to the medium bed.
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