Análise de viabilidade econômica para reaproveitamento de lodo como biomassa na geração de energia em caldeira

Abstract

As a form of innovation in the energy sector, sustainability and warranty of economic and environmental gains, the search for reuse of solid waste generated in industrial effluent treatment stations is increasingly sought. Aiming at inserting sustainability in the current scenario, this work aims to analyze the feasibility of using sludge generated in the food industry effluent treatment station, in the composition of the biomass used in the boiler burning for energy generation. The study follows an approach regarding the high cost and environmental impact of the disposal of solid waste in landfills or composting. Sludge burning, under favorable conditions, can contribute to the production of thermal energy. In order to obtain the results, a bibliographic review was necessary to characterize the biomass and to obtain costs based on experimental data from the industry. In addition, a logical method of investigation, the inductive one, was used for the analysis of the investment of the project, based on the observation of indicators such, Minimum attractiveness rate, Net Present Value, Internal Rate of Return, simple and discounted Payback period. The results of the research demonstrate that there are opportunities for reusing sludge and economic gain in the industrial environment, in addition to finding economic and financial indicators that proved to be viable, with good financial returns. It is also concluded that despite of the great advances already made in search of sustainability, there are still great opportunities to be studied.