A process for treating Drinking Water

摘要

This relates to a process for treating Raw Water containing Selenium content lower than 10 mg / l, being partly in the form of Selenium SELENITEThat includes the following successive Steps: a) a first step of production where the Raw Water is filtered through a Filter material containing iron oxide hydroxide and / or titanium oxide to selectively remove almost all of the untreated Water SELENITE; (b) A Regeneration Step where the ozonized Water is passed through the filter to oxidize in selenatSELENITE or retained by the filter material during the first step of Production; c) optionally a rinsing step to filter out the download of ozonation by-products; (d) a second step of production where the Raw Water is filtered through the filter material Composition was obtained in the step (b) or (c) to selectively remove almost all the SELENITE DICha SELENATE untreated Water and release the filter material in the untreated Water, where such release is continuous throughout the second step of production and where the content of Selenium is obtained in the treated water will not exceed 10 mg / L.Also refers to drinking water that is obtained through the process according to the present which contains Selenium content lower than 10 mg / L and that contains no more than 5 ng / l of methylated molecules volatile Selenium.