Diseño de una planta de tratamiento de aguas residuales de la industria “Lácteos mi Velata”, Chambo –Chimborazo

Abstract

In the industry of processing and production of dairy products there is a problem that focuses on the contamination of wastewater incorporating substances that deteriorate the quality of water, converting it in useless water, therefore, this technical work has as its main objective to design a wastewater treatment plant generated in the industry "Lácteos Mi Velata", Chambo -Chimborazo; The first part used techniques that allowed characterizing the F/Q and microbiological components of the wastewater, while the second part applied engineering calculations to size the treatment plant. Within the results obtained in the characterization of wastewater, it is detailed that there are quantities outside the parameters established in the standard (Ministerial Agreement 097-A, TULSMA:, book VI - table 8), giving values such as: COD 4840mg/L, BOD 2730 mg/L, oils and fats 382mg/, suspended solids 232 mg/L, total solids 10284 mg/L, turbidity 350NTU, conductivity 963.2, total coliforms 161 CFU/100ml, fecal coliforms 83 CFU/100ml; In addition, a process of treatability of contaminated water was developed, through the jar test, where different flocculants were supplied, in which Aluminum Polychloride was efficient, also anionic Polyelectrolyte was added, managing to reduce turbidity, pH and phosphate concentration, based on this we proceed with the sizing of the plant which needs an area of 41,12 m2 . In conclusion it is determined that for the validity of the proposed design, the percentages of removal of the components in the values are recorded in the values: BOD with 94,90%, COD with 95,70%, oils and fats 94,10%, suspended solids 69,90%, total solids 96,50% and in turbidity 96,70%, making it a suitable plant for the treatment of wastewater from the company under study