NOVELTY - Method for the treatment and processing of waste containing health-hazardous, preferably poisonous, infectious and/or slightly radiation-contaminated residual substances, including different kinds of leftovers or residues representing different degrees of dangers and hazard, comprises (i) physical process step: reducing the volume of the waste and increasing its total surface by cutting up, preferably shredding, and (ii) chemical process step: gradually adding the additives under controlled conditions to chemically attack the waste.    USE - The invention deals with the method for treating and processing of waste containing health-hazardous, preferably poisonous, infectious and/or slightly radiation-contaminated residual substances.    ADVANTAGE - In the method, an inert substance as the only product of the procedure can be used again as raw material without any risk (claimed). The plant for the treatment of waste exhibits short manufacturing and delivery times and low maintenance operation. The method is environment friendly.    DETAILED DESCRIPTION - Method for the treatment and processing of waste containing health-hazardous, preferably poisonous, infectious and/or slightly radiation-contaminated residual substances, including different kinds of leftovers or residues representing different degrees of dangers and hazard such as perishable and/or spoilt domestic refuse, microorganisms, medicaments, anesthetics, insecticides, pesticides, slaughterhouse wastes, prion-loaded tissue (prion protein, bovine spongiform encephalopathy), infectious and cross-contaminated feces and sludges, septic tank sludges, heavy metal-loaded substances, comprises (i) physical process step: reducing the volume of the waste and increasing its total surface by cutting up, preferably shredding, and (ii) chemical process step: gradually adding the additives under controlled conditions to chemically attack the waste. An INDEPENDENT CLAIM is included for a plant for the execution of the method.    DESCRIPTION OF DRAWING(S) - The figure shows the schematic representation of the plant for the treatment and processing of waste:    Electrical motor for material transport; (3)    Dry-cell-additives-silo; (4)    Shredder; (5)    Water conduit; (8)    Nitrogen conduit. (9)