Análisis de la arena de mina, como filtro en el tratamiento de aguas residuales provenientes de la industria de jeans “Tecnilavado”, de la ciudad de Ambato, cantón Ambato, provincia de Tungurahua

Abstract

This work was focused on looking for a new alternative to process the residual water generated by the “Tecnilavado” blue jeans industry. Nowadays, the processes used in order to treat the wastewater, result so expensive in them construction, operation and maintains, obtained results under the expected quality for the water treated. In other hand, the filtration is the more able option for wastewater treatment due to the simple process and lower cost of investment. A prototype of filter of sand from quarry, was put in operation for a period of time of 72 days, in order to monitoring the functioning and take water samples of the filtered water each 7 days. The parameters analyzed were: Biochemical Oxygen Demand (BOD5), Chemical Oxygen Demand (COD), Color, Total Solids, Sedimentable Solids, Conductivity and Hydrogen Potential (pH), which were compared with the limits proposed by the "TULSMA". The information compiled by the filter monitoring, allowed to determine problems of operations as the clogging and determinate the possible solution for the optimal operation. Moreover, the results of the analyses of wastewater treated, showed favorable results for reduction of parameters, reaching values of: 318 mg/lt which represent a 36.40 % of reduction for Chemical Oxygen Demand, and 150.52 mg/lt which represents a 39.63% of reduction for Biochemical Oxygen Demand, and a partial reduction for Color and Total solids. These results allowed to verify that a filter of sand from quarry, reduce the contamination of the wastewater of the “Tecnilavado” blue jeans industry, since the values fall below of the TULSMA limits.