Abstract
Mechanical biological treatment (MBT) can separate and recycle municipal solid waste (MSW) while also reducing the waste that is finally going to the disposal site. In this paper, two MBT facilities under operation in Thailand are introduced and cost benefits are analyzed for model cases according to these facilities throughout their operational period. MBT facilities adopt the bio-dry process using solar drying and biological fermentation heat for reduction of moisture in the MSW. Products from these facilities were utilized as industrial solid fuel. After 20 years of operation at the MBT facilities, cheaper costs for production of the refuse derived fuel (RDF) and land disposal of residues could result in improvement to the overall cost benefit ratio (CBR).