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Do EDI Systems have a difficult time removing CO2? Why is the CO2 concentration in the EDI feed water so important?

April 26, 2017CO2 concentration difficult EDI feed removing SYSTEMS time water

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Do EDI Systems have a difficult time removing CO2? Why is the CO2 concentration in the EDI feed water so important?

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CO2 is removed by EDI systems just as dissolved salts such as sodium chloride are. We call particular attention to the feed water CO2 concentration for two main reasons. The first is that CO2 is weakly ionized in water so its concentration is not measured by conductivity measurements. The second reason is that CO2 is often a significant portion of the load on the EDI System because it is not removed by RO systems.