Browsing by Author "Sánchez Sailema, Andrés Santiago"

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    Análisis de la cascarilla de arroz utilizada como filtro en el tratamiento de aguas residuales provenientes de lavadoras y lubricadoras de autos “Polito´s” ubicada en el cantón Tisaleo de la provincia de Tungurahua
    (Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica. Carrera de Ingeniería Civil, 2018) Sánchez Sailema, Andrés Santiago; Acosta Lozada, Rodrigo Iván
    The Experimental Work consists in the analysis of the effectiveness of a filter made from rice husk, for the reduction of the concentration levels of the environmental parameters Biochemical Oxygen Demand, Chemical Oxygen Demand, and Oils and Fats, in the residual water from the "Polito's" Car Washer and Lubricator in Tisaleo canton, province of Tungurahua. For this purpose, the filtration system was built, consisting of a storage tank, a pipe for the water conduction by gravity and a square plastic container with some rice husk. After running the tests for 91 days, the concentrations of the parameters were measured 9 times, the first measurement was made directly from the effluent and the remaining 8 once the residual water was filtered. Based on the measurements made, it is determined that the concentration levels without a filter exceed the maximum admissible limits according to the Ecuadorian environmental standards established in the Texto Unificado de la Legislación Secundaria del Ministerio del Ambiente (TULSMA), which are 70 mg/l for oils and fats, 250 mg/l for BOD5, and 500 mg/l for COD. Meanwhile, after the filtering process, the concentration values were reduced below that established by the TULSMA in the case of BOD5 and COD, but not for oils and fats, whose concentration values were reduced but still exceeded maximum admissible limits. Consequently, it is established that the filter based on rice husk is effective to reduce the concentration levels in car washers and lubricators, although in the case of oils and fats it is necessary to carry out a subsequent filtering process.