Diseño, construcción y caracterización de un reactor de electrocoagulación tipo batch

Abstract

This research work consists of designing, constructing and electrochemically characterizing a pilot-scale electrocoagulation reactor for the remediation of two types of contaminated water, industrial wastewater of textile origin (ARI) and domestic wastewater (ARD) of the Machángara River. Four anodic potentials were taken as reference, according to the Pourbaix diagrams, which remained constant in each of the trials. The cell was optimized with drinking water at the pH of the studied waters. The parameters of cell potential, current intensity, Total Iron, Ferrous Iron, Dissolved Oxygen, pH, Conductivity, Turbidity and Real Color were measured; having the best cell efficiencies at the potentials of 1.0 V and 1.5 V. The cell with the wastewater was optimized by measuring the parameters measured in the optimization with drinking water plus COD and TOC, at the 1.5 V electrode potential for the two types of water with cell efficiencies greater than 70%, but with the difference that for domestic wastewater high efficiency was also obtained for 1.0 V. Maximum cell potential values of 12 V, current density 12 A/m2 and iron production of 9 g/m2 were obtained. Finally, the reactors were sized with an electric current of 35 A for the two types of water, while the volume was 6 m3 and 10 m3, for industrial wastewater and for domestic wastewater, respectively