Dear Alireza,  Recently we ...

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Dear Alireza, 
Recently we investigated electro-oxidation (www.noahws.be) with this technique you could convert the chloride present in the waste water into bleach. Hereby reducing some of your chloride (20%) but giving it a useful function (disinfection, oxidation of organic pollutants). Afterwards with a pH increase like David suggested or with electrocoagulation like Abdul suggested you can remove most of the iron, calcium and magnesium. Unfortunately with these techniques you will not be able to remove the sodium and potassium.

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