Evaluación de la planta de tratamiento de aguas residuales de la comunidad LLimpe Grande, cantón Quero, provincia de Tungurahua

Abstract

The main objective of this work is to evaluate each component that makes up the wastewater treatment plant (WWTP) of the community of Llimpe Grande, located in the Quero canton, Tungurahua province, in order to determine if the WWTP is working correctly. For the evaluation of the WWTP, it began with the gathering of information on the current state. Based on the work carried out in the field, the maximum wastewater flow rate was determined both at the entrance and at the outlet. In addition, a sampling of the wastewater was carried out, samples that were analyzed by an accredited laboratory in order to determine the pollutant load that is treated in the plant and compare it with the parameters established in the TULSMA 2015 for wastewater discharges into freshwater bodies. The current process (distributor tank, septic tank, FAFA and sludge drying beds) used for the treatment of wastewater was evaluated, which showed that the plant is not working correctly, since the actual removal percentage of the plant is about 23 percent; In addition, that several of its components do not comply with the parameters established in the treatment plant design manuals, for this reason, a new process was incorporated for the treatment of waste water (screening, sand trap, grease tank, septic tank, FAFA and sludge drying bed), in order to achieve a theoretical removal of 90 percent of contaminants present in the wastewater. On the other hand, an operation and maintenance plan for the WWTP is proposed for its proper functioning.