Abstract:
The water supply systems aim to satisfy the population's demand in terms of quantity and
quality, and are designed for horizons between 20 and 50 years. Some of its components reach
their useful life limit before that period, forcing a phased installation and keeping up with
demand. At the limit of their useful life, they present various anomalies, such as ruptures in the
pipes and water leaks or deficits in water supply to the expanding areas. Songo's water supply
system, built in the decade 70, is in this situation and to remedy the anomalies, from 2011 to
2012 it benefited with study that proposed solutions for interventions. One of the main
proposals was the increasing of intake capacity, from 500 m3
/h to 720 m3
/h, in order to meet
the 63,000 inhabitants demand in the horizon, year 2051. However, in the detailed project, the
definition of solutions for the water transmission main was not followed by the development
of hydrodynamic model to assist the managing entity in its operations. To fill this deficit, was
developed the present study which aims to evaluate the hydraulic behavior of the operation of
the transmission main derived from increase in demand, using the Epanet 2.2 software. The
calibration of the model proved to be 100% satisfactory in terms of flow and pressure, and
simulation of future exploration, considering normal operation and interruption for 12 hours,
indicated, for the first case, that will be necessary to guarantee at least in the North and South
distribution centers, 25% and 42% of its useful capacity on each day of operation, in the months
of greatest demand, and for the second case, it is not expected to fully satisfy the project
demand, regardless of the initial storage in the distribution centers.
