There are many areas at a coal fired power plant where treatment through thermal evaporation is a good decision. Among these are flue gas desulfurization, combustion residual leachate and bottom ash transport water. The US Environmental Protection Agency (EPA) is taking charge in these areas through the promulgating of new Effluent Limit Guidelines (ELGs) which necessitate that electric steam (coal fired) power plants meet new discharge limits to stay in operation. The new discharge limits are deemed necessary to protect our nation’s vital water resources, agriculture, industry, recreation activities and thriving community activities. The new ELG’s indicate that thermal evaporation will now be considered “Best Available Technology” (BAT). In other words, the ELG’s will mandate treating wastewater to Zero Liquid Discharge (ZLD) standards.
Vacom Systems™ unique evaporation / crystallization technology is considered BAT by EPA standards. Vacom’s next generation technology is a dramatically more efficient and cost-effective single step process that its competitors cannot match.
The Vacom One-Step!™ is a patent pending technology that cleans wastewater into two by-products: pure water and crystallized solids. Its pioneering design combines multiple processes required by competing systems into a single treatment step.
Vacom’s One-Step™ system circulates at extremely high rates relative to the evaporation rate, which provides tremendous heat transfer in a turbulent flow regime resulting in smaller heat exchangers, no scaling or fouling of the heat exchanger plates, and concentrating past the salt saturation levels to precipitate crystals allowing for an efficient ZLD operation.
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