Proposta de solução integrada para as cavas de areia de Seropédica como alternativa de incremento de segurança hídrica e recuperação de área degradada

Abstract

During the years 2014 and 2015 the worst water crisis in the last 84 years of historical data has occurred in Paraiba do Sul and Guandu river basins, revealing vulnerabilities in the domestic and industrial water supply in Rio de Janeiro Metropolitan Region (RMRJ). This work assimilates the concepts of water security and land reclamation proposing the utilization of existing mining sand lakes of Seropédia/Itaguaí as a water reservoir for the industries located in the south of Guandu basin (Baixo-Guandu) during periods of droughts. It is an integrated solution to increase water security in the mouth of Guandu River along with an environmental reclamation of the area. A SWOT analysis was performed using a questionnaire with specialists in order to understand the Strengths and Weaknesses, and for identifying both the Opportunities the Threats of the mining sand lakes. This result was used to plan a proper land use and urban interventions necessary to integrate the solution. Finally, a water balance was performed to evaluate the proposal feasibility. The water balance uses different scenarios to the mining lakes and different performance criteria in order to evaluate which of them meet the minimum requirements regarding water supply and reservoir capacity.