WAC Exchanger/Polisher

[jdogg05]

Hi,

How does a WAC exchanger work? Also, why is it called an exchanger or polisher (is it not just for precipitation of hard-water sulfates)? Does anyone have any section views of the internals? What is the purpose of "regeneration"?

Thanks.

 

[bimr]

Weak acid ion exchanger are used to remove the weak cations, calcium and magnesium, but will not remove sodium, which is a strong cation. Sulfate is an anion and will not be removed by a cation ion exchange unit.

The internals of a weak acid unit will be the same as any as any other type of demineralizer unit.

http://www.gewater.com/handbook/ext_treatment/ch_8_ionexchange.jsp#DEALKALIZATION