Biological treatment of wastewater
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United States of America Patent
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-
May 5, 1987
Grant Date -
N/A
app pub date -
Sep 13, 1985
filing date -
Sep 13, 1985
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A wastewater treatment reaction vessel is operated with repeated sequences of aeration and non-aeration, using a single vessel or multiple vessels alternately, activated sludge which is acclimated for BOD reduction, nitrification or biological denitrification and phosphorus removal is absorptively reacted with influent wastewater, and the combined flow is passed into subsequent absorptive reactor volumes, reducing the BOD such that the effluent BOD is less than twenty percent that of the influent.
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