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Re: KATI / ANI vs. RO / DI
Louis Lin writes:
> I am getting the feeling that KATI is a great solution for people with hard
> and alkaline water. KATI will replace the calcium and magnesium ions with
> H+ and the H+ will neutralize the carbonate in the water to reduce pH and
> produce CO2. And the KATI is rechargable with HCl, which is commonly
> available. And there is no waste water.
>
> This sounds too good to be true. Is there a catch?
Yes, sort of. You are assuming that all of your hardness is associated with
CO3 alkalinity. That isn't likely to be the case. You are also forgetting
that not only Ca++ and Mg++ ions will be replaced, but also K+, Na+, Fe in
its couple of valences, and any other cation. While in the end it will
reduce alkalinity, it will probably also increase acidity more than you want
it to. But I suppose you can try it out and if not happy, spring for the ANI
unit to go with it.
Bob Dixon