Redução do consumo de água potável de uma edificação unifamiliar utilizando o sistema de aproveitamento de água pluvial no município de Pato Branco - PR

Abstract

In face with the world wise water scarcity, society has been searching for alternatives to reduce this problem. The techniques of rainwater harvesting from roofs for non-potable purposes have contributed to water conservation and the rational use of water. Based on this idea, this study aims to analyze the reduction of potable water consumption from a building using a rainwater harvesting system in the city of Pato Branco, Paraná. The water stored by rainfall can be used to wash cars, floors, water gardens and plants, and flush toilets. The research method developed pluviometric data gathering from the region, the estimation on the volume of water consumed, the demand of non-potable water by the activities that have restriction in use, the sizing of the system components, the use of some methods from NBR 15527 (ABNT, 2007), and the software Netuno for the reservoir sizing. In the end, a lower reservoir volume of 6.5 m³ and an upper reservoir volume of 0.5 m³ was determined, as well as a potable water savings potential of 26% generated by the implementation of rainwater harvesting system, obtaining satisfactory results for water conservation in the municipality of Pato Branco.