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Re: [Killietalk] Re: R/O Question
David Lains wrote:
Is deionization a possibility for those in water limited areas? They have
100% out put (no waste).
I know some exchange sodium for other cations but are there higher end
resins that are not ion exchange?
The sodium exchangers are simple water softeners that exchange sodium
for divalent ions like Ca and Mg.
Others exchange H+ ions for any other positive ions. They all are ion
A second set of resins is used to do the negative ions, like Cl- and
CO3-. Then *all* ions are replaced by either H+ or OH- ions, so all that
is left, in theory, is pure H2O.
Expensive and energy wasteful, the deionizers *could* be used instead of
RO units. Recharging the resins uses up lots of water, so I have trouble
seeing the advantage over just using the RO discharge for water needs
where the tds content isn't a particular bother.
Those mixed-bed resins that make you throw away the cartridge are beyond
consideration, IMHO. They are only for the very wealthy (or foolish). :-)
Wright Huntley -- 760 872-3995 -- Rt. 001 Box K36, Bishop CA 93514
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