Utilização de um sistema de drenagem urbana sustentável na região central do município de Russas/CE

Abstract

The city of Russas, located in the Vale do Jaguaribe region in the state of Ceará, faces significant challenges related to urban drainage, especially during periods of heavy rainfall. These issues have caused numerous inconveniences for the population, including flooding and disruption of vehicle traffic. One of the areas most affected by this problem is Dom Lino Avenue, the main commercial road in the municipality. This problem arises from the disordered urban expansion in line with topographic aspects of the municipality. aiming at the application of systems that mitigate the drainage problem in a sustainable way, this work contemplates the pre-dimensioning of the reservoir system of the compensatory method by permeable sidewalks, through the development of a flow model that expresses the direction of the rainwater runoff of the region. Through the sizing, two scenarios were analyzed: Conventional scenario and sustainable scenario with application of rainwater harvesting method by buildings. Considering the maximum depth of 1.5m for the reservoirs; was presented in calculations that for the total area of the region it is necessary only 1.89% of this area for the correct functioning of the drainage system in the conventional system, having the total cost of execution of the stone reservoir of R$ 944,179.13, considering the excavation and the material of the reservoir. For the scenario that considers the rainwater harvesting for the same region, the necessary area is 1.542%, totaling the cost of R$ 768,683.98 and also impacting the total flows, showing to be an efficient and sustainable solution to the problem of the urban drainage system of the study region, solving the problem of flooding and reducing the risks of floods.