![](../Images/Main-GreenOFF.jpg) ![](../Images/Main-CaseOFF.jpg) ![](../Images/Main-ResourcesOFF.jpg) ![](../Images/Main-SyllabusOFF.jpg) ![](../Images/grey_spacer.gif) ![](../Images/HomeOFF.gif) |
|
|
|
|
|
|
|
Cost issues |
|
Blackwater Wetland,
Tres Rios, TX |
|
The construction cost
at the Tres Rios in Texas is estimated at $ 80 million, including
both initial cost and predictions for expansion to reach the full-scale
operation. In comparison, the estimate for the expansion of the local
existing facility to achieve the same result would be more than $
625 million. This is largely due to the fact that the constructed
wetland system only requires periodic on-site labor, rather than continuous
full-time attention, as required for the operation of the conventional
treatment plant. The scale of he Tres Rios project is 800 acres. Put
in another way by Mike Ogden, the estimated operating cost for this
technology may be 10 to 15 cents per thousand gallons compared to
average treatment cost of $2.50 to $3.00 per thousand gallons at conventional
treatment plants. |
|
|
|
|
|
|
|
|
|
|