Diseño de un sistema de tratamiento de aguas residuales domésticas para la parroquia Totoras, cantón Ambato.

Abstract

The aim was designing a Treatment System of Domestic Sewage for Totoras parish, Ambato canton, since it does not have a Treatment System, then all the flush generated by domestic activities is poured directly to the fresh water flow of Pachanlica river without any prior treatment. The system was developed to obtain treated water, reducing all the organic and inorganic pollutants found over the permitted limits according to the Norm of Environmental quality and effluent discharge: Resource Water, Book VI. Annex I. Limits of discharge to a fresh water supply, TULSMA. Resource Water. The physical chemical and microbiological characterization of the waste water allowed identifying the most important pollutants such as: Suspended Solids 520 mg/L, DQO 37 mg/L, DBO5 213 mg/L, Phosphates 23,5 mg/L, Kjedahl Total Nitrogen 44 mg/L, Oil and Fat 78 mg/L, Surfactants 0,94 mg/L. The incorporated units: Channel-Grid, Channel Parshall, Desander, Septic Tank and Anaerobic Filter of Ascendant Flow. Finally, after combining the treating tests, septic tank and anaerobic filter of ascendant flow, some removal percentages were gathered: Suspended Solids 91,75%, DQO 83,75%, DBO5 83,75%, Oil and Fat 83,36%, Phosphates 61,49%, Sulfates 92,00%, Kjedahl Total Nitrogen 95,00%, Surfactants 82,98%, Fecal coliforms 97,00%. Permanent monitoring of the caudal is recommended so that there would not be overflow of the dimensioned units.