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Due to the high price of CPVC 1/2" caps, other options for plate settler construction are being considered. Below is a cost analysis of other options that have been proposed.
Costs are based on one sedimentation tank.
Unknown macro: {toggle-cloak} Cap and Screw Attachment
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|
Quantity |
Cost (lempira) |
Cost (Dollar) |
Total Cost |
Cost/sq ft |
Caps |
896 |
9 |
$ 0.48 |
$ 426.89 |
$ 8.71 |
Screws |
384 |
4 |
$ 0.21 |
$ 81.31 |
$ 1.66 |
Nuts |
384 |
0.75 |
$ 0.04 |
$ 15.25 |
$ 0.31 |
Lamina |
15 |
900 |
$ 47.64 |
$ 714.66 |
$ 14.58 |
Total |
|
|
|
$ 1,238.12 |
$ 25.27 |
One sheet of lamina is 900 Lempiras, and is 12 feet long. Each lamina in the plate settler is 3 feet long, so four lamina can be made from one sheet. The tank is 4.3 meters long, and there are lamina every 5 cm, so 86 lamina are needed, or 29 sheets per tank.
The tank dimensions are 14 feet long by 42 inches wide, giving an area of 49 square feet.
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Unknown macro: {toggle-cloak} Bolt and Spacer Attachment
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|
|
Quantity |
Cost (lempira) |
Cost (Dollar) |
Total Cost |
Cost/sq ft |
|||||
12" stainless steel bolt |
52 |
202.8786 |
$ 10.74 |
$ 558.48 |
$ 11.40 |
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Nuts |
112 |
4 |
$ 0.21 |
$ 23.69 |
$ 0.82 |
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PVC Pipe |
112 feet |
4.96807 |
$ 0.26 |
$ 29.46 |
$ 0.60 |
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Lamina |
15 |
900 |
$ 47.64 |
$ 714.66 |
$ 14.58 |
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Total |
|
|
|
$ 1,326.29 |
$ 27.40 |
|
|
|
|
|
|
1/4" diameter, 12 inch stainless steel bolt price taken from Mcmaster.com (Part Number: 98827A381)
PVC pipe price taken from Mcmaster.com (Part Number: 48925K11)
Price of nuts were conservatively estimated knowing that 1 small nut used in the Cap and Screw cost .75 Lempira.
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Unknown macro: {toggle-cloak} Pipe and Coupling Attachment
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|
Quantity |
Cost (lempira) |
Cost (Dollar) |
Total Cost |
Cost/sq ft |
1/2" Coupling |
600 |
1.5 |
$ 0.08 |
$ 47.59 |
$ 0.97 |
1/2" PVC Pipe |
112 feet |
4.96807 |
$ 0.26 |
$ 29.46 |
$ 0.60 |
Lamina |
19 |
900 |
$ 47.59 |
$ 904.28 |
$ 18.45 |
Total |
|
|
|
$ 981.33 |
$ 20.03 |
The cost of pipe was taken off Mcmastercarr.com, and may not reflect actual prices in Honduras.
The couplings are 4 cm long, therefore lamina spacing is 4 cm rather than 5 cm. This means that a total of 36 twelve foot sheets of lamina are needed.
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Unknown macro: {toggle-cloak} Brentwood Industries Commercial Products
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IFR-6036 tube settler cost approximately $24 per square foot.
Plate settlers in 3' lengths and 42" widths would be approximately $48 per square foot.
Brentwood Ind. Tube Settlers & Plate Settlers
*These prices do not take consider the cost of shipping.
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