Re: [Killietalk] De-ionizing resins

[Ken Simolo <Simolo at chem_chem.rochester.edu>]

Hi Dave,

I am not sure ion exchange is cheaper than RO in the long run, 
especially if you use the "waste" water generated by the RO unit. 
Also, if you need large amounts of water on a routine basis, it seems 
to me the RO units are the way to go since a 100 gallon/day unit is 
fairly inexpensive.   Now, if you have extremely low conductivity 
water to begin with, you can produce large amounts of DI water before 
you need to recharge.  As you say though, you can produce a larger 
amount of water in a SHORT period of time with a resin system.

In my mind, it comes down to whether he can use the waste water from 
the RO unit.  In my situation, I have a low yield well so I put a 550 
gallon reservoir in the basement fed by the well and then pumped it 
into the house system.  My waste water from the RO unit goes back 
into the reservoir so I have no water waste at all.  I realize that 
is not an option for most people.

Ken





>....
>it to make it safe for fish. Folks this is cheaper
>then RO in the long term but much more labor intensive
>as you have to recharge and mess with water so much. I

.......

>product and lifetime warranty. The advantage of Ion
>exchange is you can produce allot of water so if your
>needs are great then this may be the choice.Also from....
>
>Dave Sanchez
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