Process for purifying an aqueous alkali meta chloride solution by removing ammonium and iodine.

摘要

The present invention is a process for purifying an aqueous alkali metal chloride solution containing iodine essentially in the iodide form, in which the iodine is oxidised to an oxidation number of 7, that is to say in the periodate form, and then the periodate is removed. Simultaneously, the ammonium is also destroyed by oxidation to molecular nitrogen followed by a degassing.