Diseño de un sistema de tratamiento de agua residual para la Tenería Neogranadina S.A. de la ciudad de Ambato

Abstract

A wastewater treatment system was designed for Tenería Neogranadina S.A. in the city of Ambato for the water coming from the fleshing, retanning, dyeing and greasing processes. The thesis has an experimental character, using induction as a logical process, since it started from the observation of the processes developed in the company, to later carry out a diagnosis in order to take samples in plastic containers with a capacity of 5 liters and relevant data in the sampling place, such as pH and temperature. When characterizing the wastewater from the different stages of Tenería Neogranadina S.A., the results were 1101 mg/L of COD, 14.28 mg/L of sulfides, 840 mg/L of BOD5, 760 mg/L of SS, 9526 ml/L of MES, which were analyzed and treated in order to lower the level of contamination, since it does not comply with the discharge limits established in the Unified Text of Secondary Environmental Legislation, Annex VI, Table 9. In addition, by implementing this treatment system, the company will be able to reduce the pollutant load below the limits established by current regulations. As a result of the wastewater treatment, the COD was removed by 91%, the BOD by 595%, and the sulfur content was reduced by 99.9%. The reduction of suspended solids was 94%. And a phenol removal of 99%. This results in treated water that can be discharged into the public sewer, since it complies with the discharge limits. The company must perform frequent analyses of the treated water to verify that the treatment is working properly and that the contaminants are being minimized.