Abstract: The invention concerns a method for treating a mixture of wastes (4) comprising biodegradable wastes, the method being characterized in that it includes the following successive steps: Step A: the mixture of wastes (4) is subjected to a first composting cycle so as to obtain a mixture of pre-composted wastes (4), Step B: the mixture of pre-composted wastes (4) is subjected to a drying so as to obtain a mixture of dried wastes (4), Step C: the mixture of dried wastes (4) is separated into at least a portion of heavy wastes (14) and a portion of light wastes (13), Step D: the portion of light wastes (13) is subjected to a second composting cycle to so as to obtain a mixture (4) of refined wastes (20). Treatment of biodegradable wastes.

Abstract: The invention relates to a device (1) for opening containers (C), the device comprising: an enclosure (2) having an inlet (3) for admitting containers (C), the inlet being above an outlet (4); a rotary shredder tool (10) suitable for causing the containers (C) to open, and extending between a bottom end (11) and a top end (12), said shredder tool (10) being mounted via its top end (12), the bottom end (11) of said shredder tool (10) being free inside said enclosure (2); and drive means (14) for driving rotation of said shredder tool (10); the device (1) being characterized in that said shredder tool (10) presents a reference position from which it can move away while continuing to perform its function of opening the containers (C), said shredder tool (10) having a natural tendency to return to its reference position under the action of return means (34). Opening containers.