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Created by
user-8a70c, last updated on Feb 08, 2008
1 minute read
Hydraulic Design
Design Flow Rate
The Támara plant flow rate was determined using an initial town population of 5,500 people. The flow rate was based on the projected population and associated water demand in 20 years. Population was calculated using a linear growth model with a 3.5% growth rate. Water demand was estimated as 114 Liters per person per day. The minimum plant flow rate was initially estimated as half of the maximum flow rate. However, after discussion with John Erickson and Carol Serna, the AguaClara engineers in Honduras, it became clear that the town did not currently have a population of 5,500. At the time of design, 570 homes were hooked up to the transmission line. With an average of 6 people per house, this population was 3420 people. This would result in a water demand of 463 L/min in 20 years. The potential for 120 new connections in the near future exists.
However, the engineers in Honduras believe that source at Támara can provide at least 740 L/min. It was decided that 740 L/min should remain the maximum plant flow rate because the actual demand for water is uncertain, and the extra size of the plant would not be too costly. Initial baffle spacing in the flocculation tank will be designed in a way to ensure that the current flow rate, possibly as low as 270 L/ min could be handled.