Diseño de una planta de tratamiento de aguas residuales y la determinación de las propiedades físico químicas en la población de Pastocalle para su dimensionamiento

Abstract

In the presented entitled research “Design of a sewage water treatment plant and the physical-chemical properties determination in the parish Pastocalle for its dimensioning” it is focused on environmental engineering which purpose is to design a sewage treatment plants to the parish San Juan de Pastocalle located in the Cotopaxi province. This study aims to provide a sustainable alternative for the sewage treatment plants which are found in the central area of the named parish. It will be done through reducing environmental pollution to other water bodies and ensuring a proper treatment before pour the water. To determine the correct method, the biodegradability index was calculated, it was obtained a value of 1.4574; that is, a second treatment was carried out, and several necessary parameters for the design were analyzed in the same way. The treatment is composed by two parts, a screening system which is connected as a pretreatment one which in turn is connected to the second part, which is a logon system that consists of an anaerobic lagoon, a facultative lagoon and two maturation ponds. A notable reduction of the initial DB05 to 6.76 mg/ L was obtained. Furthermore, a technical, social and economic analysis was carried out to determine two kind of costs, direct and indirect for the construction, operation, and maintenance of the treatment plant, besides the per cubic meter of treated water was calculated similarly.