Diseño del Sistema de Tratamiento de Aguas Residuales de las Etapas Ribera y Curtido para la Tenería San José

Abstract

A wastewater treatment system was designed for the riverbank and tanning stages for the "San José Tannery" located in the city of Ambato. Using the deductive method, the study began with the reconnaissance of the plant, then the determination of the effluents was carried out by the gauging method and by means of the mass balances the effluents were calculated, for the riverside stage a design flow of 37.17 and for the tanning stage 33.92 was obtained. Subsequently, applying the experimental method, the results of the physical-chemical analysis of the wastewater were obtained: BOD5 3185 , COD 1200 , total solids 29388 , settleable solids 100 , total suspended solids 800 , chlorides 14800 , sulfides 495 , pH 12.7. And for the tanning stage was obtained a BOD5 726 , COD 550 , total solids 11632 , settleable solids 68 , total suspended solids 480 , chlorides 4200 , pH 3.8, total chromium 102, 05 . The aforementioned parameters are outside the permissible limits of the TULAS standards. It is concluded that the parameters analyzed made it possible to determine the treatment system components, which will consist of: grids, primary circular tank for the individual stages of bank and tanning; together there will be a circular tank for flocculation and an active sludge system. I recommend to the company "Tenería San José" that the wastewater treatment plant designed be installed to manage and control the contamination of liquid effluents discharged into the public sewage system.