Lowering viscosity of biosolids
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United States of America Patent
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Jan 8, 2013
Grant Date -
Sep 9, 2010
app pub date -
Mar 3, 2010
filing date -
Mar 3, 2009
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Abstract
Sewage sludge is dewatered to a cake-like state. The viscosity of the sludge is lowered by admixing a quantity of urea, urea-ammonium-nitrate, or other nitrogen-containing material, in with the dewatered sludge. The treatment also removes pathogens, and renders the product suitable for use as a fertilizer.
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