Modelo sustentável de aproveitamento pluvial: uso racional dos recursos hídricos considerando oferta e demanda para dimensionamento de um reservatório ótimo. Estudo de caso para o município de Poços de Caldas - MG

Abstract

The water scarcity, identified in several locations of Brazil, shows serious issues related to inappropriate management of water resources, such as over consumption increase, the lack of governmental incentives in the implementation of conservation measures and population’s indifference to practice water rational use. Therefore, the using of new water supply sources, such as rainwater harvesting, it presents great potential for application, mainly when seeking to improve the water resources uses or reduce the costs of potable water consumption. This paper aims to evaluate the rainwater harvesting practice in the Poços de Caldas municipality, which enabled to identify the rainwater harvesting potential application to supply residential non-potable uses and development of a sizing rainwater reservoir method, adapting Continuity Equation. The obtained results allow concluding that rainwater harvesting practice implantation presented high application potential, once were sized feasible rainwater reservoir volumes, fact mainly noticed by using proposed method, being obtained a reservoir of 2015, 44 liters for consumption of 6132 liters monthly, relative to the consumption of four residents, allowing to ensure priority consumption supply and implantation of a residential system of these proportions.