EVTEA da implantação de um sistema de digestão anaeróbica por fermentação seca com cogeração para o tratamento de resíduos sólidos orgânicos na cidade de Salvador-BA

Abstract

According to the most recent Basic Plan of Urban Clean from Salvador, about 1,450,000 tons/year of municipal solid waste was generated in the city. Of these, only around 12% are considered reject, 42% are considered organic waste and 46% are recyclable. It is known that most of these residues are disposed on sanitary landfill that is supposed to be the final destination option according to national regulations. Thus, this study aims to evaluate the technical, economic and environmental feasibility for the implementation of an anaerobic digestion system through dry fermentation process to treat part of the organic fraction of solid waste generated in the city of Salvador. Therefore, information was obtained from companies that supply this technology and it was received a commercial proposal for the installation of this system. The results has shown 36% of IRR, R$6.800.00 of NPV and less than 3 years of pay-back, revealing a good financial attraction for the business and raising questions about the lack of incentives, policies and research for the sector.