Avaliação econômica da geração de resíduos sólidos urbanos no município de Frederico Westphalen – RS

Abstract

The generation of solid waste in Brazil has intensified every year. On the other hand, management and recovery actions for this waste do not move at the same speed. In 2020, 66.6 million tons were collected, however, only 2.10% was recycled. Most of the MSW constituent corresponds to the organic fraction, representing 45.30%, which is the most expensive part for the municipalities when it comes to collection and destination, which further reinforces the importance of implementing regionalized strategies for its reuse. Thus, this work aims to quantify the expenses that the municipality of Frederico Westphalen-RS had in 2021 with the disposal of MSW and propose scenarios for reducing the shipment of the organic fraction by 30.00% and 50.00% to the CIGRES sanitary landfill. Through these scenarios it was possible to see how the organic fraction impacts the municipal budget. In 2021, the municipality spent R$1,344,334.47 on the destination of its MSW, after applying the scenario of a 30.00% reduction in the shipment of the organic fraction, this amount reduced to R$1,161,641.71, representing 13.58% savings. In the 50.00% reduction scenario, the value showed an even more significant savings, reaching 23.00%, with R$1,039,844.77 spent on destination. In addition to the economic advantage, there is also the environmental gain with the use of composting as an environmentally appropriate destination for organic waste, in the 30.00% scenario there was a reduction of 923.54 tons of organic waste sent to the sanitary landfill and in the scenario of 50.00%, a decrease of 1539.23 tons. Both scenarios are valid and demonstrate how important the correct management of MSW is.