Patent ID: 7736512

Claim:
A method for the production of natural energy from municipal solid waste (MSW), comprising the following steps: bio-stabilisation to transform the MSW into a dry and homogeneous unrefined material which is rich in biodegradable and inert substances and is easy to handle; b) fluid-dynamic separation of the unrefined material to provide a fraction rich in materials with high heat value constituting the quality secondary fuel (SF) and a residue of heavy material and dust; c) compacting and storing said residue in bioreactors, wherein said bioreactors can be sealed and activated; d) activating the bioreactors with water and service of said bioreactors during anaerobic digestion for the production of biogas; e) bio-stabilisation and dehydration of the residual material with air after the anaerobic digestion of said stored residue from step c in the bioreactors; and f) recovery of the biogas and bio-stabilized and dehydrated residual material.