Diseño de un sistema de tratamiento de aguas residuales domésticas para la parroquia La Unión, cantón Quinindé, provincia de Esmeraldas.

Abstract

A water treatment system of la Union town in Quininde canton was designed to obtain water to satisfy environmental regulations of Ministry of Environment Secondary Legislation Unified Text of the discharge limits (TULSMAN) book VI Annex 1, Table 10, to design an optimal treatment for the purification of waste water. The physical-chemical and microbiological characterization of the domestic wastewater was carried out, where, the parameters are outside the norm limit. After, that treatability tests were carried out by using aluminum polychloride and filter that had zeolite, sand and gravel for the reduction of surfactants. Subsequently, the treatment system was designed, consisting of a collection channel, grid system, mixing thank, conventional settler, filter with zeolite granular media, sand and gravel and a drying bed. The removal percentages obtained through the characterization of treated wastewater validate the selected design in which a removal of turbidity 99.84%, conductivity 84.80%, and oxygen biochemical demand 87.23%, chemical oxygen demand 90.77%, total and fecal coliforms 99.98% were obtained. It is concluded that costs of implementation and execution of the wastewater treatment plant project are estimated for the plant accomplishment, as well as the costs for the necessary chemical products per day in the wastewater treatment system, are within of the budgets established by the municipality. It is recommended to carry out characterization analysis of residual water after the plant implementation in order to manage the parameters within the TULSMA standards provisions.