FPL and Miami-Dade County have developed an agreement to supply treated wastewater as cooling water for the new units at Turkey Point. Under this plan, Miami-Dade County would produce and deliver up to 90 million gallons a day (75 MGD on average) of treated wastewater to Turkey Point, where it would be further treated for use as cooling water for the new nuclear units. The reclaimed water would also be available to supply cooling water to FPL's existing Turkey Point Unit 5 combined-cycle natural gas unit.
With this arrangement, FPL will dramatically reduce the demand on other water resources for cooling water and help the county reduce the amount of wastewater that is currently disposed of in the ocean or deep wells. In fact, the plan would enable Miami-Dade County to achieve about half of its goal for recycling treated wastewater with a single cost-effective project.
FPL has used reclaimed water for cooling power plants in other projects, most recently at our natural gas combined cycle units located at our West County Energy Center in Palm Beach County. FPL's experience in using reclaimed water will be applied at our proposed Turkey Point units to maximize the reuse of this vital resource.
- Treated wastewater that meets the Florida Department of Environmental Protection’s requirements for high-level disinfection would be sent from Miami-Dade County’s South District Water Wastewater Treatment plant to the Turkey Point site in a nine-mile long dedicated pipeline.
- At the site, FPL would further treat the reclaimed water to improve its efficiency for use in cooling.
- The water would then be circulated through the plant’s cooling towers as part of the process of producing electricity.
- The remainder of the cooling water would be disposed of using deep injection wells, a proven, environmentally sound process that has been in practice in Florida since the 1970s.
FPL has selected radial collector wells as the backup cooling water source, which would provide water from the marine environment when reclaimed water is not available. The wells are specifically designed to have no adverse environmental impact.
The radial collector wells would provide saltwater from approximately 25 to 40 feet beneath Biscayne Bay as the backup supply. The wells would be located on the Turkey Point site east of the existing power-generating units.
For nearly 90 years, radial collector wells have been used to withdraw water from beneath large bodies of water for municipal drinking water supply, industry, and even large aquariums.