Tratamiento de agua residual procedente de una industria de transformación de látex, mediante procesos de oxidación avanzada a escala de laboratorio

Abstract

The number of industries increases proportionally to population growth, generating a greater amount of wastewater, which is treated with conventional systems with low efficiency in the treatment of emerging pollutants (UN, 2017). In response to the above, the effectiveness of advanced Fenton-type oxidation in the treatment of industrial wastewater was evaluated to ensure that the COD, BOD5 and pH parameters are within what is established by environmental regulations (Ministerial Agreement 097ª, Chart 8). In the present investigation, the water of an industrial company for latex transformation was characterized, values were obtained for the initial evaluated parameters, subsequently it was determined for the coagulation process that the optimal concentration of Polyaluminum Chloride (PAC) type A is 1 g / L, through jar tests under specific conditions, the advanced oxidation treatment type Fenton was applied in different concentrations, with which it was concluded that the optimal concentration of Fenton reagent for this specific treatment was 10 mg / L of Hydrogen Peroxide (H2O2) and 10 mg / L of Ferrous Sulfate (FeSO4), the mixtures were subjected to one hour of rest, then an iron precipitation process was carried out through jar tests and pH modification. Finally, final values of COD 220 mg/L were obtained, equivalent to a reduction percentage of 65%, BOD5 25 mg/L equivalent to an increase of 80%, which represents greater biodegradability and pH of 7.1, which prove the effectiveness of the Fenton-type advanced oxidation treatment for this type of wastewater.