Avaliação da eficiência do tratamento físico-químico (eletrofloculação) aplicado ao lixiviado de aterro sanitário

Abstract

The generation of solid waste is part of human life, especially since the shift from nomadic life around 10,000 BC. Currently, what is most concerning, besides the volume generated, is the diversity of this waste, which represents a growing environmental challenge. Therefore, it is essential to develop and improve technologies for the management, treatment, and proper disposal of this waste, with the aim of minimizing its negative impacts. Based on this, the most appropriate method for the final disposal of this waste is in sanitary landfills. However, during decomposition, leachate, also called slurry, is formed, which is highly polluting. That said, this study aims to evaluate the efficiency of physical-chemical treatment (electroflocculation) in the treatment of a synthetic effluent based on fulvic acid, comparing its results to the treatment of a real effluent from landfill leachate collected after biological treatment. Subsequently, we seek to scale up the system in order to analyze its operational feasibility and potential for application under different volume conditions. After conducting the tests, we observed high efficiency in COD and color removal, reaching values greater than 80% and 90%, respectively.The best results were obtained with copper electrodes and at acidic pH. The scale-up proved effective, demonstrating the stability and consistency of the experiment.