Rediseño del sistema de tratamiento de aguas residuales para la Curtiduría Cristo del Consuelo de la ciudad de Ambato.

Abstract

The aim was the wastewater treatment system redesign in “Cristo del Consuelo” tannery company, located in Ambato city. It was made through the implementation of an aeration tank, a primary decanter and a flocculation coagulation system which was selected depending on the type of process to be used as pelts and tanning. The determination of variables such as: the flow rate and the exact dosage for the treatment by means of tests was determined the initial and final parameters of the samples such as: in the simple of hair presented a turbidity of 1109 NTU, pH of 12.28, COD of 11 771 mg/l, BOD of 7430 mg/l, settleable solids 2.9 ml/l, total solids 10.72 g/l, sulfides 945.77 mg/l and sulfates 1516.67 mg/l. After treatment, the following were determined: COD of 220 mg/l, BOD of 144 mg/l, sedimentable solids of 1 ml/l, total solids of 1.2 g/l, sulphides of 12.8 mg/l and sulfates of 1350 mg/l. The average of the tanning simple showed a turbidity of 10.89 NTU and a pH of 4.34, in addition to other parameters such as: COD of 15 700 mg/l, BOD of 12 300 mg/l, solid settleable of 2.33 ml/l, total solids of 16.79 g/l, hexavalent chromium of 0.070 mg/l and total chromium of 109.24 mg/l. And after the treatment is of COD 490 mg/l, BOD 170 mg/l, settleable solids 1 ml/l, total solids 2.2 g/l, hexavalent chromium 0.031 mg/l and total chromium 11.82 mg/l, in chapter three determined the engineering of the Project as well as the feasibility of the redesign in the plant, nowadays the company does not have a treatment system. Therefore, its implementation would lead to the reduction of the pollutants, which can directly affect people living around and also the enviroment.