Systems and methods for organic wastewater treatment
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United States of America Patent
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-
Jan 23, 2007
Grant Date -
Dec 2, 2004
app pub date -
Nov 21, 2002
filing date -
Nov 22, 2001
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A system and method for organic wastewater treatment through denitrification and nitrification processes. The system for treating organic wastewater includes a multistage treatment tank having at least two stages in series. Each stage has a denitrification tank and a nitrification tank connected in this order. The system includes a pipe for distributing feed water to the denitrification tank in each stage, a device for filtering and separating at least a part of an activated sludge mixed liquor present in at least one nitrification tank, and a pipe for supplying at least a part of the concentrated sludge mixed liquor obtained by the filtration and separation treatment to the denitrification tank.
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