Figure 16.1 shows the schematics of the unit operations of ion exchange. Figure 16.1a shows a cation exchanger and Figure 16.1b shows an anion exchanger. In both units, the influent is introduced at the top of the vessel. The bed of ion exchanger materials would be inside the vessels, where, as the water to be treated passes through, exchange
_ . Regenerant tion wast " ""BVckwash;Wa_sie"."_
NaCI (sodium cycle) or
HCI; H2SO4 (acid cycle)
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