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- A sharp crested weir will be used to control the water level and excess water will be wasted (a bad choice given the high cost of pumping this water), returned to the 150 cubic meter storage tank, or somehow added to the transmission line that takes water to the water treatment plant for Santa Rosa de Copan.
- A float valve will be used to control the water level in the entrance tank. This would be the easiest option to implement. A disadvantage may be the wear on the float valve due to the high sediment load in the raw water. This will also need to be a large float valve and thus it will be a relatively expensive item.
The plant will be designed with the plant walls all having the same height as the entrance tank. Thus when the effluent pump turns off the water level in the plant will all rise to the water level in the entrance tank and as the water levels in the plant increase the flow through the plant will decrease and finally stop.
Design Files created by the AguaClara Design Tool
The freeboard was set to 35 cm so that the walls were drawn high enough on the sed tank. The walls on the rest of the plant will need to be trimmed to match the height of the sed tank walls.
AguaClara Design Tool data input
Excel sheet with design values
AutoCAD drawing
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Overall Hydraulic Alternatives for Aguaclara plant at Los Plancitos
AutoCAD drawing with design changes
Design decisions
Item Description | Dimension |
|---|---|
Pipe connecting entrance tank to flocculator | 6 inches |