Abstract:
A method for treating waste involves (a) compressing the waste at a pressure of over 800 bars under conditions resulting in separation of the wet fermentable fraction and the solid combustible fraction; (b) exploiting each of these two fractions separately by means of, for the fermentable fraction, specific treatment to take advantage of its biomass nature and, for the combustible fraction, burning to produce energy. The method allows the waste to be exploited with high profitability. The invention also describes an improved press for compression in two successive phases: a precompression phase up to an intermediate pressure (200 to 300 bars) and final compression up to a final pressure of over 800 bars.
Abstract:
A method for treating garbage or waste in which the garbage or refuse is subjected to at least one compression step (14) under conditions enabling the separation thereof into a putrescible fraction (15) in the form of a moist pulp, and into a dry fraction (16) with a relative moisture of less than 20%, then the putrescible fraction is subjected to a treatment (17) by anaerobic fermentation producing a biogas (18), characterized in that the resulting dry fraction (16) is subjected to an endothermic gasification treatment (19).