Graver Powdex® Condensate Polisher removes iron, copper, silica, activated corrosion products and salts, whether soluble or suspended. This is the most economical and efficient system yet devised to provide both filtration and ion exchange capabilities. Powdex systems have been designed with condensate flow capacities up to 33,000 gpm (7,500 m3/hr) for a single installation.
The Powdex condensate polishing system consists of a vessel containing precoatable filter septa. A precoat of powdered ion exchange resin and other materials is placed on the septa and the condensate is passed through the powdered resin, through the element and returned to the condensate system and is discharged to the condensate effluent/feedwater system. Upon exhaustion of the ion exchange resin or high differential pressure, the resin is removed by backwashing and discarded and replaced with a fresh supply.