Avaliação técnica e ambiental da eficiência de ETE em condomínio no Porto das Dunas - Fortaleza

Abstract

The increasing appeal regarding environmental management issues, the treatment and reuse of effluents at various scales has become increasingly important. Due to the worrying water crisis that ravages the Brazilian Northeast, this work will evaluate the Wastewater Treatment Plant (WWPP) in a residential complex located in this region. The residential complex treats the sewage water produced by its dwellers in a compact WWPP and uses the treated wastewater to feed a landscaped lake located on the property and for the irrigation of its extensive green area. This paper presents results of the monitoring of the station through analyzes of free chlorine, pH, temperature, total dissolved solids, fecal coliforms, turbidity and color in comparison with the ABNT standard, the UNEPA and SABESP standards, and the COEMA resolution issued by SEMACE. The results show that the wastewater treated by the WWPP meet the standards, thus proving the efficiency of the treatment. In addition, a technical evaluation of the plant was also carried out, proposing some improvements such as the construction of an additional contact tank to store the wastewater after the compact WWPP and thus eliminate a production bottleneck. Another suggested improvement was the replacement of the Submerged Aerated Biofilter (SAB) support material with Pall rings, which presents more adequate characteristics for this type of treatment. All improvements proposed in this work were suggested in order to improve the quality of the treated wastewater and also the efficiency of the system.