Evaluación de la eficiencia del sistema tratamiento primario químicamente mejorado (CEPT, Chemically Enhanced Primary Treatment), para aguas residuales de Guayaquil.

Abstract

This qualification work was carried out in order to evaluate the efficiency of the treatment (CEPT) chemically enhanced primary, for sewage domestic from the city of Guayaquil, determining the degree of efficiency in removal of various physical and chemical parameters of the treated wastewater and assess whether the pilot plant effluent levels are inside of the limits accepted technical standard text unified environmental secondary legislation (TULSMA) established by the Ministry of environment of the Ecuador. By jar test the optimal dosage of coagulant ferric chloride (FeCl3), meets different dosages to evaluate their efficiency in removal of contaminants, to determine the dosage which conforms to the requirements technical and economic. The construction of a pilot plant consisted of a pumping equipment to carry domestic wastewater from sewer system of the Engineering Faculty of the Catholic University of Santiago de Guayaquil, installations of dosing ferric chloride and polymer, two tanks: tank fast mixing, flocculation, a second tank for clarification. With the flow calibration to operate the pilot plant CEPT to continuous flow. In this circumstance was sampling measurements to make the comparison with the efficiencies obtained in tests of pitchers. Results were tabulated to analyse and establish the best dosage with respect to the removal of the three analysed parameters and costs of each one of them per cubic meter of treated.