BORON ION EXCHANGE MEMBRANES REVERSE OSMOSIS TDS

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Abstract

Manufacturers of certain processes have focused on proving how effective their process is in reducing boron concentrations while treating seawater and brackish water. This is partly due to the target value for potable water in World Health Organization guidelines, and partly because of the target residual values for boron in the production of high-purity water that is used as a cleaning agent during semiconductor manufacturing. This article highlights the impact of membrane and pH selection on the removal of boron and total dissolved solids (TDS). It will show the benefit and drawbacks of certain membranes under particular circumstances, including the feedwater pressure and the presence and concentration of certain ionic species. The aim of this article is to show system designers the benefit of checking all the membranes available both in terms of system performance and in terms of the impact of downstream processes. It is also to highlight certain approaches for consideration by membrane manufacturers when reviewing the accuracy, completeness, and functionality of their projection software.

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