This is the situation of industrialized countries characterized by a comprehensive solid waste management system composed of the following facilities (De Feo and Malvano, 2009): hazardous waste landfills, non-hazardous waste landfills, inert waste landfills, waste-to-energy plants (based on incineration, pyrolysis or gasification), mechanical biological treatment (MBT) plants, composting and anaerobic digestion plants, materials recovery plants generally after separate collection.