Patent ID: 7311834
Filing Date: 2007-12-25
Classification: B09B,C02F,C05F,C12M,Y02A,Y02E,Y02P,Y02W

Abstract:
1. An apparatus for treating particulate biodegradable organic waste comprising: a thermal hydrolysis reactor receiving the particulate biodegradable organic waste for performing thermal hydrolysis at a temperature above about 130° C. and a pressure at or above the saturated water vapor pressure to produce a slurry including solubilized organic material and residual solids; pH adjustment means for adjusting the pH of the particulate biodegradable organic waste as necessary to provide an acidic pH of greater than about 3.15 before thermal hydrolysis of the particulate biodegradable organic waste; separating means receiving the solubilized organic material and residual solids for separating solubilized organic material from residual solids; an anaerobic reactor configured to receive the solubilized organic material; means for circulating the solubilized organic material from the separating means to the first separating means; and the anaerobic reactor being configured to receive liquid including the solubilized organic material from the separating means and not solubilized organic material directly from the second separating means.