Diseño de lagunas de oxidación para tratamiento de aguas residuales generadas en los barrios (paraíso, san jorge, el llío y san sebastián) del cantón “chambo”

Abstract

A treatment system based on oxidation ponds was designed for wastewater generated in the neighbourhoods (Paraíso, San Jorge, El Llio, San Sebastián) of the "Chambo" Canton, using basic instruments for flow measurement, for the point discharge by volumetric method.Wastewater samples were collected to conduct in situ physical, chemical,and biological characterization analyses.The results of the flows had a more significant collection of the sewage system of residual water with an average of 4.02 L / s, which is essential for the design of the system. The physicochemical, as well as biological characterization was carried out in the water quality laboratories of the Escuela Superior Politécnica de Chimborazo.It showed results outside the permissible limits according to ministerial agreement 097-A, which were the biochemical oxygen demand with a value of 182.75 mg/L, the chemical oxygen demand of 388.19 mg/mL, suspended solids with 142.21 mg/ L, and faecal coliforms with 7,567*106 MPN/100 mL.A treatment system was designed in which it is based on oxidation lagoons for said treatment, which had a total efficiency of the plant of 80% based on the removal of the biochemical oxygen demand in 5 days (BOD₅) solubles; in this way, check if theresults of the concentration are correct, thus verifying that environmental regulations are complied with.Implementing the treatment system by the municipality of the Chambo canton is recommended to improve the quality of the water discharged into the Chambo River.