Avaliação da eficiência das estações de tratamento de esgoto ETE Aureny e ETE Norte no município de Palmas-Tocantins

Abstract

With the application of sewage collection and treatment networks, new challenges arise,in this case, the release of effluents into rivers, lakes, springs, among others, when not treated properly, cause a network of problems to health and the environment. Therefore,the present work aims to evaluate, through physical, chemical and biological parameters,the efficiency of the Sewage Treatment Plants of Palmas, Tocantins, namely, ETE Aurenyand ETE Norte, through the results of the parameters provided by the Municipal Foundation of Meio Environment, through the laboratory of the BRK Ambiental Concessionaire | Saneatins during the years 2017, 2018 and 2019, the results obtained based on historical values by regulatory legislation in CONAMA. In general, sewage treatment plants present removal of organic matter, in the fractions of total and suspendedsolids, with an average of 42.8% for total solids to 88.6% for total suspended solids, at ETE Aureny and 53.4 % for total solids. 96.01% for total suspended solids in ETE North,as dissipation of ETEs with good removal of organic matter, as well as good removal of Thermotolerant Coliforms, with an average of 99.9762% in ETE Aureny and 97.0039% in ETE North. As ETEs are efficient for the removal of most parameters, however, someparameters such as Nitrogen Ammonia and Phosphorus are not in compliance with the CONAMA 430 legislation, having low efficiency in their removal.