Viabilidade do aproveitamento de água pluvial para fins não potáveis: estudo de caso da Unipampa Campus Caçapava do Sul - RS

Abstract

Before the scenery, increasingly common, of shortage of drinkable water, there is demonstrated the importance of studies of conservation, preservation and use of the hydric resources. One of the methods of sustainable use of the waters is its utilization through the implantation of rain water collection systems. Owing to that, this work has like main objective there analyses the viability of thein utilization of a system for the water reuse of the rains, for use in activities of cleaning, in the real estate installations of the Universidad Federal do Pampa, campus Caçapava do Sul. To determine the viability of system deployment, there happened a lifting data that consisted of the application of a questionnaire to the officials of the service of cleaning, seeking to determine which monthly and weekly volume used. In addition, an analysis of the invoices of water consumption on campus was carried out in order to determine their monthly average and forums verified and calculated as areas available for the capture of water and obtained the rainfall data of the municipality. The calculation of the volume of usable pluvial water monthly, it was carried out 15.527/2007 using equation recommended by NBR, which takes into account the areas available for the collection of, monthly average rainfall, superficial runoff and capture factor. The minimum area required to meet a monthly demand for water for how cleaning activities was estimated based on the month with the lowest average precipitation. Through the results found, it was possible to determine that the teaching institution of Caçapava do Sul, it has viability for the implantation of a water capture system for the cleaning services. If the cleaning activities were carried out with pluvial water, in other words, there was this substitution of the drinkable water, there would be guaranteed an economy of approximately 25 % of the spent total, value that might be invested in other sectors.