Análise Custo-Eficiência do Controle do Escoamento por Meio de Reservatórios Distribuídos

Abstract

Urbanization modifies the hydrologic cycle resulting in increases of runoff volume, velocity and peak flows. Associated with the process of urbanization is the inefficiency of traditional urban drainage systems. Given this fact, the compensatory techniques are presented as alternatives that aims to control the runoff, not only transferring the problem downstream. This study sought assess the use of dispersed storage tanks as a low impact development alternative for flow control. Using the PCSWMM, a hydrological modeling was performed for different scenarios, varying the location of devices, as well as the area occupied by each reservoir. For each configuration was analyzed the relationship between the cost and the efficiency of the system. The results obtained revealed that changes in spatial configuration imply changes in costs. In addition, for the reduction of the area of reservoirs, was found that the 30% reduction in the area, lead to a 27% cost reduction, while the efficiency of the system has been reduced by only 4%.