Diseño de un sistema de tratamiento de aguas residuales para el Centro de Faenamiento Municipal Pallatanga, provincia de Chimborazo.

Abstract

The main purpose of this study was to design a wastewater treatment system for the discharges generated in the slaughter process of the municipal slaughterhouse of the Pallatanga canton, Chimborazo province. In order to conduct this study, samples of compound type were taken during five consecutive days, which gave an average flow of 3.22 L/s. Subsequently, the initial characterization of the sample, and the respective physical, chemical and microbiological analyzes were carried out by identifying the parameters allowed by the current Environmental Regulations of the OFFICIAL REGISTER, MINISTERIAL AGREEMENT N° 97-A table 9, discharge limits for a body of fresh water. The respective treatability tests were carried out by means of an experimental system based on a physical and chemical method whose findings reported: Chemical oxygen demand (COD) 92,86%, Biochemical oxygen demand (BOD5) 94,52%, Oils and fats 93,09%, real color 88,7%, fecal and total coliforms 100%, and residual chlorine 41%, which are adequate. The treatment process started by the separation of grids, then, a chemical treatment by the jars test was carried out in order to find the appropriate dosage of coagulant and flocculator. In this case, the most optimal was the ferric chloride 10 ml and polyelectrolyte 0,5 ml and its respective chlorination with 0,3 ml. The next step was to calculate the sizing of the equipment for the design, which begins with an inlet channel, gratings, a settler, flocculator, chlorination tank and finally a filtration. Finally, the proposed design was validated by means of the analysis of costs and results collected, which demonstrates its efficiency to be implemented in the municipal slaughterhouse of the Pallatanga canton.