Mapeamento das unidades de tratamento de uma ETE para fins de diagnóstico

The aim of this work was to study the performance of a Wastewater Treatment Plant (WWTP) in the municipality of Uberaba-MG, through evaluation of the data provided by the local sanitation company. Analysis of these data, collected at the main points of the treatment stages, made it possible to assess the overall efficiency of the sewage treatment process at the plant, as well as each specific stage. The removal efficiencies of the various parameters monitored were: COD = 91.50%, Ammoniacal-N = 33.10%, Total-P = 60.87%, ST = 48.02%, TSS = 91.66%, VSS = 92.82%, and FSS = 88.80%. In addition, the pH of the final effluent was always within the limits allowed by current regulations. The analysis highlighted aspects that could be improved to add value to the process as a whole. In addition, it was observed that inadequate values for any of the parameters analyzed can lead to underuse or overload of the plant units, compromising the effectiveness of the treatment as a whole, such as the low organic load applied to the UASB reactors, such as the low HRTs resulting from the complete-mix aerated lagoons and the facultative aerated lagoons.