Depends of Condensate origin, ... Published September 2, 2018 17:45 by Rafael Gay-de-Montella MSc PEng, Water Wastewater Treatment Expert, Oil-Gas, Tailings, Boilers, ZLD; Evaporators, Sludge Depends of Condensate origin, but If sufficiently clean of solids, most likely the best is Ion exchange (Strong Acid + Strong Base) Mix bed Ion exchange system.