A influência dos padrões de precipitação no caudal e carga orgânica afluente num sistema de drenagem de águas residuais urbanas

Abstract

The aim of this work is to assess the effect of rainfall patterns on the main flows and affluent loads of wastewater treatment plants. This evaluation will be supported by a studying based set of circumstances, on which a quantitative and qualitative monitoring model of the effluents in an urban wastewater inter-system will be developed in order to identify methodologies to improve environmental management. After a conceptual investigation, it will be analyzed, as a point of studying, the drainage front 4 (FD4) of the Integrated System of Depollution River Ave Valley (SIDVA) specifically, the sub basin of Nespereira. At the starting point a register survey of the entire urban wastewater drainage infrastructure will be made. At the place where all the upstream wastewater converges, a continuous measurement point of the drained flows will be done as well as the representative qualitative limits monitoring, which later will be related to the rainfall data, a monitoring site called the Monitoring and Control Zone (MCZ). It is thus suggested to analyze the hydraulic behavior of the drainage network in detail by modeling the system based on a hydrodynamic model and, in addition, to establish a combination with urban wastewater monitoring and control methods, quantifying variations in flow rates and organic load in different rainfall events.