Characteristics of the precipitation and rainwater harvesting for non-potable purposes in Itajubá, MG

Resumen

This work presents a study of precipitation characteristics for the city of Itajubá, MG, as well as an analysis of the viability of implantation of rainwater harvesting systems in residences. Comparisons were made between different precipitation series, being the National Water Agency (NWA) the series that presented better performance and thatwas used for simulations with different scenarios in the Netuno software. It was found that the catchment area is the most important variable with regard to higher economic potential when compared to the reservoir volume. It was also possible to show the economic potentials of potable water for each rainwater reservoir volume in various scenarios, including the green roof, which is anexcellent tool in the search for new technologies in favor of the reduction of environmental, social and economic impactsin civil construction, although in terms of water reuse this is inferior to the conventional roof. Therefore, the results obtained in this work can have important implications in studies of rainwater harvesting in residences in the city of Itajubá and, even, in cities with similar precipitation characteristics.