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Treatment of acidic water containing dissolved ferrous cations

Treatment of acidic water containing dissolved ferrous cations

Official Gazette of the United States Patent & Trademark Office Patents 1260(3), July 16

A water treatment process for raw water containing dissolved Fe2+ and H+ cations to reduce the Fe2 + cation concentration therein involves oxidation of the Fe2 cations to Fe3+ cations with the formation in the water of solid Fe(OH)3 from the Fe3+ cations. The process comprises the steps of oxygenating the water and raising the pH of the water. The oxidation of the Fe2+ cations and the fromation of the Fe(OH)3 are carried out in the presence of suspended particulate material in the water, the particulate material being present in the water at a concentration of at least 5 g/l.

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Accession: 035980707

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