After
physico-chemical purification, it is possible that the treated water still contains excessive concentrations of certain metals (copper, zinc, nickel, germanium, manganese, tin, lead and or chromium). In case of low salt concentrations and the absence of complexing agents (such as EDTA and NTA), selective ion exchangers know how to handle this. They ensure a further reduction in the concentration of heavy metals to ppb values. Eco-Vision is happy to apply this technique if circumstances permit.