Deoxygenation and Desalination of Water on Difunctional Strong Basic Anion Exchanger

Abstract

Corrosivity of natural water is controlled by concentration of soluble oxygen and amounts of mineral salts. In order to decrease the corrosivity of water, deoxygenation and demineralization methods are applied. This article presents investigations on oxygen and mineral salts removal by ion exchangers. A special kind of bed which contained two ionic forms: sulphite and hydroxyl was investigated for simultaneous removal of oxygen and anions from water. Natural water from a deep well supplied the bed after its initial decationization on a strong acid cation exchanger. The model solutions were used with hydrochloric and sulphuric acids in amounts equal to decationization of water from the well.

The removal efficiency of oxygen and anions was very high. The bed may be used as a difunctional ionic column for the simultaneos removal of oxygen and anions if a demineralization process is designed by the ion exchanger’s method. The corrosivity of water can be eliminated and technological procedures should be simplified using such a bed.