Production of volatile fatty acids by means of mesophilic fermentation of sludge
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United States of America Patent
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Nov 17, 2015
Grant Date -
Dec 16, 2010
app pub date -
Nov 28, 2008
filing date -
Dec 6, 2007
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Abstract
A method and related apparatus for the removal of excess water from sludge, the method comprising the steps of: (1) fermenting the sludge at a temperature in the mesophilic temperature range, (2) maintaining the fermenting sludge for a predetermined period under a hydraulically quiescent condition to achieve phase separation, (3) separately removing the solid phase and liquid phase and (4) feeding the solid phase to the digester for conversion to biogas.
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