Control of activated sludge wastewater treating process for enhanced phosphorous removal
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United States of America Patent
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-
Jun 2, 1981
Grant Date -
N/A
app pub date -
Oct 9, 1979
filing date -
Oct 9, 1979
priority date (Note) -
Expired
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Abstract
An improved method of operating an activated biomass process wherein influent and activated biomass are initially contacted under anaerobic conditions to form a mixed liquor, the mixed liquor is subsequently oxygenated, thereafter activated biomass is separated from the mixed liquor and at least a portion of the separated biomass is introduced into the initial contacting step. The improved method comprises maintaining both the F/M ratio and the BOD/P ratio within particular ranges, preferably relative to each other.
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