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 ; and introducing the slurry into a crystallizer zone to remove residual water .