Projeto e implantação de sistema residencial de aproveitamento de águas pluviais para usos não potaveis

Abstract

It was designed and implemented a residential system for the utilization of rainwater for non-potable uses, for this a low-cost utilization methodology was developed for non-noble rainwater, such as sanitary discharges, laundry, gardens, washing floors and floors. The system designed and implemented consisted of a set of parts and accessories, such as: gutters, pipes, connections, pumping system and water reservoir. After this, it was verified that the economic viability of the rainwater utilization system for non potable purposes in the residence had an initial investment of R $ 1,316.08, with an annual use of 61.96 cubic meters of rainwater volume, which is equivalent to an annual savings of R $ 237.92 with expenses of consumption of potable water and sewage, with a financial return period of 6 years. It was found on the basis of the rainfall data obtained in the two different periods during the year ("full and dry"), the volume of rainwater collected is very expressive, specifically in the first semester of the year with an average of 14.64m³ of water . While in the second, the average amount of rainwater collected is 3.98m³, the latter being considered as not expressive enough to supply the household's non-potable water consumption demand. At the end of this study it can be observed that the economy is not always financially significant when installing a rainwater harvesting system, due to having a medium to long term capital return period, but for the conservation of drinking water it is critical that awareness develop and that new individual solutions are used.