Análisis de la grava como filtro en el tratamiento de aguas residuales provenientes de la curtiembre Quisapincha de la provincia de Tungurahua cantón Ambato

Abstract

In the present project, a biofiltration process was carried out with the use of gravel as filtering material of the Quisapincha Tannery effluent located in the Ambato Canton of Tungurahua Province. The inlet and oulet waste water of the filter media was evaluated considering the physical-chemical analysis the following parameters: Biochemical Oxygen Demand (BOD5), Chemical Oxygen Demand (COD) and Hexavalent Chromium. The monitoring of the filter was developed in a time of 90 days, the samples were taken every 10 and 15 days, taking the sample every Thursday that the tanning water is received, thus taking 9 samples of filtered water and 1 sample. of raw water taken initially. The analyzes of the samples were carried out in Lacquanálisis S.A. With the results of the analyzes carried out, the efficiency of the biofilter was verified by comparing the raw water sample with each of the filtered water samples, and determining if the samples meet the permissible limits established by the TULSMA. Once the results were analyzed, it was determined that the gravel fulfills the function as filtering material and if it reduced the levels of contamination, reaching efficiency values of 98.5% in Hexavalent Chromium, 94.2% in DQO and 95.6% in DBO5.