The condensate polishing units are also used in refineries and petrochemicals, fertilizer to polish the process condensate and surface condensate for reuse.

During the process, the condensate picks up contaminant like Iron, Copper, Oil, Silica etc., and needs to be treated by mixed bed polisher.

The condensate polisher typically consists of a heat exchanger activated carbon filter and mixed bed polisher. The heat exchanger is used to reduce the temperature to about 40º-50º C, due to the limitations of temperature for anion exchange resin. In some cases, a cation exchanger is also installed preceding the mixed bed exchanger. After the mixed bed polisher, the condensate is sent back for reuse.

Paramount has so far done large condensate polishing unit of 2x250 m3/hr.