In 2006, Florida Power & Light committed to build a new 3,600 MW power generating facility in southern Florida to meet growing power demand. Two sources of water were available to meet the project's cooling water demand of up to 30 million gallons a day (MGD). Potential water sources identified were the Floridan aquifer and reclaimed water from a wastewater facility located 17 miles away. Water quality data indicated the reclaimed water quality to be of superior quality to the Floridan. Reclaimed water traditionally has a high demand for biocides for controlling biological activities and reactions with impurities found in the water. Chlorine was chosen to meet the treatment demand of the reclaimed water due to its proven effectiveness in controlling biological activities. Bulk bleach and on-site sodium hypochlorite generators (OSG) were evaluated to determine the most economical method of delivering chlorine to the reclaimed water. The analysis showed OSG to be the most economical, effective option and therefore chosen as the preferred method for treatment of the reclaimed water.
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