Treatment of sewage sludges
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United States of America Patent
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Jun 22, 2010
Grant Date -
Oct 23, 2008
app pub date -
Dec 16, 2005
filing date -
Dec 20, 2004
priority date (Note) -
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Abstract
The present invention provides a method of reducing the pathogen content of sewage sludge comprising (a) adding to the sludge an effective amount of a phosphorous-containing compound and (b) keeping the phosphorous-containing compound in contact with the sludge for a sufficient time to reduce the amount of pathogens present in the sludge by an amount equivalent to a logarithmic reduction of 2 or more.
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