Diseño e implementación de un modelo experimental físico - biológico para el tratamiento de aguas residuales en la comunidad Pisicaz Alto filial a la Unión de Organizaciones Campesinas de San Juan “UCASAJ”.

Abstract

The objective was to design and implement a Physical – Biological Experimental Model for the Treatment of Wastewater of the Community “Pisicaz Alto”, began with the characterization of wastewater of the filial community to the Organization “UCASAJ” of the parish of San Juan, Riobamba canton, Chimborazo province, physical, chemical and microbiological laboratory tests were carried out in the GADM laboratories of Colta, Department of Drinking Water and in the Laboratory of Environmental Quality of the Faculty of Sciences of the Polytechnic School of Chimborazo. The analyzes gave an average result of 210 mg/L in Biological Oxygen Demand (BOD) and 166 mg/L for Chemical Oxygen Demand (COD), being the most important parameters to consider for the designed and implemented for the treatment of wastewater from the community to reduce the pollution levels of the water resource. The design of the wastewater treatment system consists of a sedimentation tank with inoculated microorganisms, placed in series with a down flow filtration tank. As result, a physical – biological experimental model was obtained for wastewater treatment that can withstand a flow rate of 0,008 m xx

3 /s, which reduces by 71,9 % for BOD, 70,48% for COD the contaminant degree present in the wastewater Domiciles of the “Pisicaz Alto” Community of the San Juan parish. The experimental model allows reducing the level of contamination of the wastewater that is discharged and connects to the main irrigation channel and the river Chimborazo, generating a social and environmental welfare. It is recommended to implement it on a real scale to treat all the flow coming from the community; in addition it will serve as a referendum in the treatment of waste water for the other communities.