Avaliação das estações de tratamento de esgoto do município de Paulo Afonso - BA

Abstract

The absence of sewage treatment is considered a huge problem for the population, since it contributes to the spread of many infectious and parasitic diseases and cause degradation of the water body. Thus, the WWTPs (Wastewater Treatment Plants) aim to control the polluting parameters. This study evaluated the performance of the two sewage treatment plants belonging to the city of Paulo Afonso - BA, which have the technology applied the UASB reactors. For this, the locations were raised, features and peculiarities of WWTPs, as well as the constitution of the effluent upstream and downstream of the treatment, obtained by laboratory analysis. Overall, the WWTPs presented efficiencies above of the estimated by bibliography, with average reductions of 87%, 78% and 94% respectively for Biochemical Oxygen Demand (BOD), Chemical Oxygen Demand (COD) and Solid Sedimentable (SS). Thus, it was possible to estimate the efficiency of the process adopted, in addition to meeting the discharge standards and quality targets for effluent disposal regulated by CONAMA.