It is mainly used to purify drinking water and water for special water treatment, such as removing iron, removing fluorine, removing cadmium, radioactive pollution, removing oil and so on. It is also used in industrial wastewater treatment, such as printing and dyeing wastewater. In addition, it is also used in precision casting, medicine, papermaking rubber, leather, petroleum, chemical and dye.
Chemicals that are used are for instance sodium chloride, potassium chloride, citric acid and chlorine dioxide. Chlorine dioxide cleansing serves the removal of organic contaminants on ion exchange resins. Prior to every cleaning treatment resins should be regenerated