Diseño de una planta de tratamiento de aguas residuales para la Hilandería “Cabezas e hijos” del Cantón Guano

Abstract

A Wastewater Treatment Station Plot was made for The Thread Manufacturer “Cabezas e Hijos” from Guano – Chimborazo province with the aim of the wastewater from the thread manufacturer were treated before its discharge to the public swage system in Guano, to accomplish the environmental norms in regarding the current legislation addressed to ensure the population quality of life improvement. For the purpose of this study, the wastewater flow measuring was made a first, through the volumetric method to determine the volume of flows for the treatment station design, which accounts for a design flow of 30.66 m 3 /d, and thus, the averagely physicochemical analysis was carried out subsequently, obtaining values of the wastewater with a biochemical oxygen demand (BOD) of 904 mg/L, a Chemical Oxygen Demand / COD of 1900 mg/L, Surfactants 2.14 mg/L and Color 263, which evidenced these parameters do not reach the permissible limits to fulfill the environmental norms stated by the Environmental legalization (TULSMA). From these results, reducing the water pollution levels by setting an entrance channel provided with sieve at the end; a six tray aerator to be used to remove the color and surfactant. The wastewater Treatment Station of this study proposal is advisable to reduce DBQ 32.8, COD 490, surfactants < 1 and color 28, i.e. since it represents an efficiency of 90 %, that is, its implementation becomes advisable and feasible because it allows to fulfill the current environmental norms and ensures social and environmental sustainability.