Apparatus and method for the treatment of biosolids
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United States of America Patent
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Sep 23, 2014
Grant Date -
Feb 20, 2014
app pub date -
Oct 23, 2013
filing date -
May 25, 2012
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Abstract
Biosolids in the nature of sewage sludge are processed in a controlled environment to produce a dried sludge product of relatively high dry solid content with the elimination of or reduced levels of pathogens. The water containing sewage sludge is dried while cascading within a processing chamber using heated air at a temperature below the ignition or smoldering temperature of the sewage sludge to prevent the formation of embers. The sewage sludge before discharge is retained within the processing chamber for a sufficient time and temperature as mandated by the Environment Protection Agency rules and guidelines.
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