Methods and systems for biological treatment of flue gas desulfurization wastewater
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United States of America Patent
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Jul 26, 2011
Grant Date -
Feb 28, 2008
app pub date -
Aug 22, 2007
filing date -
Aug 25, 2006
priority date (Note) -
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Abstract
Systems and methods of treating flue gas and wastewater generated by treating the flue gas are disclosed and include introducing the flue gas, a flue gas treatment fluid that removes sulfur dioxide from the flue gas; and an organic acid conditioning agent into a wet-oxidation scrubber/absorber; introducing FGD scrubber wastewater generated by the wet-oxidation scrubber/absorber into an anoxic biological reactor to substantially denitrify the FGD scrubber wastewater; and introducing resulting substantially denitrified FGD scrubber wastewater into an anaerobic biological reactor to substantially reduce the amount of sulfate and/or selected heavy metals in the FGD scrubber wastewater.
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