Modelagem hidráulica do sistema de abastecimento de água da cidade de Jaguapitã - PR

Abstract

The objective of this work was to hydraulically model and simulate the behavior of the water supply system (WSS) in the city of Jaguapitã, PR. The WSS is composed of four deep wells, raw water discharge pumps and mains, raw water accumulation reservoir and chlorination contact tank (RAP 1), treated water pumps and mains and three reservoirs (RAP 2, RAP 3 and REL 1), in addition to the distribution network in the high and low zones. The data were obtained from the cadastral plan and the operation of the system. In the modeling and static and dynamic simulations, Epanet software was used, fed by data from AutoCAD file and Excel spreadsheets. The main results of the modeling and simulations indicate that the WSS meets the city's water demands, with an operating time of 18 hours per day, which, together with the storage volume of 75% of daily consumption, allows the pumps to be turned off during the period that electricity is more expensive (rush hour). It is possible to reduce the consumption of electrical energy during pumping, by increasing the performance of the pump sets. The simulation of the replacement of the current treated water pump set 1, with a 55% yield for another 80%, could reduce energy consumption by 89053 kW per year (9.3% of the total). The water distribution network is adequate in the high zone, while in the low zone there are areas where the pressure is greater than 50 mca during the entire period. The installation of pressure reducing valves (VRP) and the sectorization of the network can reduce pressures and, possibly, reduce water losses and operational problems with network disruption.