Method and apparatus for solids processing
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United States of America Patent
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Sep 2, 2003
Grant Date -
Dec 26, 2002
app pub date -
Aug 13, 2002
filing date -
Oct 25, 1999
priority date (Note) -
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Abstract
This invention provides a waste-processing system capable of processing high-solids wastes such as manure. This invention provides a compact U-shaped digester that allows for recycling of activated sludge to improve the efficiency of the process. Efficiency is also improved through a sludge heating design that creates a current in the digester and efficiently heats the sludge. A composter is provided to further process the sludge through aerobic digestion to create usable fertilizer. Finally, one embodiment provides a turbine that is fueled by biological gases from the digester to generate heat and electricity to be used by the system.
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