Increasingly stringent discharge regulations have led several new power plants in Florida to install evaporators and crystallizers to recycle saturated wastewater such as cooling tower blowdown, demineralizer regenerant and reverse osmosis reject. Approximately 95% of these wastewaters are recovered as distillate for reuse in the plant; the remaining slurry is reduced to solids in a crystallizer and landfilled. Three operating zero liquid discharge systems in Florida will be described.

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