Propuesta de tratamiento para las aguas residuales de la “Zona B” de Santo Domingo de los Tsáchilas

Abstract

The present project elaborates a proposal of treatment for the residual waters coming from the "Zone B" of the city of Santo Domingo, by means of the characterization of the same ones. It began with technical visits to the site, simultaneously socio-economic and environmental surveys were applied to the inhabitants located adjacent to the discharges. The hourly flow rates for each of the discharges were recorded, at intervals of one hour, obtaining a maximum peak of 0.676 L/s and a minimum peak of 0.064 L/s. Subsequently, two composite samplings were performed in each discharge, for physical, chemical and microbiological characterization, showing that five of the six discharges of wastewater do not meet the maximum permissible limits for discharges in receiving bodies, established in the TULSMA (2015). Additionally, the individual and total pollutant load was determined in terms of SS, BOD5, COD, NT and PT. Based on bibliographic information, it was established that the best purification options for domestic wastewater from "Zone B" are the biological treatments. Finally, the technical, economic and environmental feasibility was analyzed through the use of selection matrices, giving as an option the conventional activated sludge.