Reservatórios de águas pluviais como auxílio da drenagem urbana na cidade do Recife

Abstract

As the large centers grow and develop, the population increases, bringing with it a series of problems to be solved, among them, the non-use of rainwater and a sudden reduction of areas of natural soil, due to the considerable increase in areas waterproofed. Faced with this reality, it is necessary to create and encourage sustainable practices that use alternative sources of water capture, and at the same time reduce the amount of rainwater, which drains faster and with an increasing volume, to the urban drainage system, causing flooding, waterlogs, soil erosion, among other problems. The objective of this work was to survey the rainwater reservoirs as an aid to urban drainage, installed in the Recife city after the enactment of law 18.112/2015. With data, formulas and models made available by EMLURB (Urban Maintenance and Cleaning Company), “in loco” visits were carried out in order to verify, in practice, the execution, operation, advantages and difficulties of implementing the rainwater reservoirs, through interviews with engineers and construction technicians responsible for the construction of the reservoirs. Based on the counts and measurements carried out, a total of 387 rainwater reservoirs built in the city of Recife were reached, which corresponds to a total of 14,872m3 of accumulation capacity of these tanks, since the enactment of the law. All this, thanks to awareness and common sense on the part of those responsible for enforcing the law, as well as those who comply with it, since all are unanimous in their thoughts when it comes to the advantages that the construction and use of these reservoirs bring to the Recife city.