METHOD AND APPARATUS FOR TREATING WASTE ACTIVATED SLUDGE
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United States of America Patent
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Issued Date -
Oct 21, 2010
app pub date -
Apr 21, 2009
filing date -
Apr 21, 2009
priority date (Note) -
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Abstract
In an activated sludge process for treating wastewater, waste activated sludge is directed to a digester and subjected to sequential aerobic, anoxic and anaerobic treatment. Internal recycling of sludge may be carried out. The oxidation reduction potential during the anoxic and anaerobic cycles is carefully managed so that there is a significant reduction in the quantity of sludge that must be disposed of.
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