Infilco Degremont, Inc.

Michael L Pudvay

Robert Kelly

Antonio Lau

A process removes boron from ion exchange system regeneration solution including introducing a borate precipitator into the regeneration solution in a precipitation zone to generate borate precipitate; introducing a coagulator into the regeneration solution that coagulates solids and/or borate precipitate generated by the borate precipitator and absorbs boron into the solids; introducing the regeneration solution, solids and borate precipitate into a separation zone; introducing anionic polymer into the regeneration solution adjacent to or in the separation zone to increase the propensity of borate precipitate and solids to separate from the regeneration solution; and filtering the regeneration solution to remove residual suspended solids from the regeneration solution. Another process removes boron from ion exchange system regeneration solution including introducing a caustic material into the regeneration solution; heating the regeneration solution to a selected temperature; introducing heated regeneration solution into an evaporation zone to remove at least a substantial portion of water from the regeneration solution and thereby form a slurry comprising boron salt(s); and introducing the slurry into a crystallizer zone to remove residual water.

Apparatus and processes for removing boron from liquids

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.

Growing community of inventors

Royal Oak, MI, United States of America

Michael L Pudvay