The demineralizers of the Galileo series are based on the innovative principle of electro-deionization (EDI) that permits production of extremely pure water without using chemicals.
In the devices of the Galileo series, water undergoes two sequential demineralization treatments: water is first treated by reverse osmosis, sometimes a double pass, with an average 99.5% salt rejection; then, water is treated by electro-deionization.
In this process, a mixed bed of Cationic/Anionic ion-exchange resins is used that are continuously regenerated by means of an electrical field.
The scheme shows that the EDI unit is equipped with an outlet for demineralized water and a drain for concentrated salt water, that is recycled back to the Reverse Osmosis unit inlet.
The produced demineralized water attains purity values with a resistivity of up to 18,3 MW/cm (equal to a conductivity of 0,056 µS/cm).