METHOD FOR RECOVERING ENERGY FROM THE ORGANIC FRACTION OF SOLID URBAN WASTE AND ASSOCIATED FACILITY

摘要

The invention relates to a method for recovering energy from the organic fraction of solid urban waste, characterised in that it comprises the following steps: a) the organic fraction is pre-treated with mineral acids, preferably sulphuric acid, during which the fraction is heated by an outer thermal jacket with no steam injection or steam explosion, thereby producing a first slurry containing an insoluble solid susceptible to enzymatic attack by cellulases; b) a step comprising enzymatic hydrolysis using cellulases and simultaneous fermentation, using an ethanologenic microorganism, of the first slurry in order to obtain a second slurry containing diluted ethanol; and c) distillation of the second slurry such as to obtain wet ethanol, a recyclable liquid effluent and a solid.