CO2 and DI Resin, Mixed, Cation or Anion?

ADAM · Jun 23, 2020

piranhaman00 said:
Hello,

I found out I am on city water so CO2 should not be the issue, I did not however test this. Imo degassing RO water then pumping through DI resin is more work then just replacing the resin more often. The reason for my fast depletion of resin is still a mystery, I am getting about 60 gallons per canister. Its quite odd. I was in fact just yesterday contemplating trying the anion or cation resin and seeing if it would help.

You should be able to get a water test report from your municipality’s website and from there you should be able to gauge what your best bet would be. There’s a lot of junk that can be in ZERO TDS water!

For my case, I had silicate and nitrate passing thru. Therefore partially battling those with water changes from the RODI wasn’t getting me anywhere.

I personally would reach out to SpectraPure after getting the report and let them help you with the correct resins based on the water report infolong with the history of the resins you have used and the performance of those resins. The other RODI companies are fine as well but I have used SpectraPure myself and can attest to their service.

The BRS pro resins should help eliminate which of the blended resins (anion/cation) is deleting so quickly but you will still be changing that one frequently.

For well water users you may want to check if the water supply to the filter has a water softener in-line upstream of the filter and that you have the proper filters if so.

Reefen · Jun 24, 2020

ca1ore said:
This is the pump I used to take degassed water from an open tank.

Aquatec 5800 Reverse Osmosis Delivery Pump

Reverse Osmosis Delivery Pump with 3/8 Inch Quick Connect Fittings

www.uswatersystems.com

Thanks, that helps alot

DCR · Oct 22, 2020

Cation resin exchanges positively charged ions (cations) in the water like sodium, calcium magnesium etc. for hydrogen ions. Anion resin exchanges negatively charged ions (anions) like chloride, sulfates, bicarbonates etc. for hydroxide ions. You need both types of resins. The two resins can be charged together in a single container or in separate containers. The advantage of the separate containers is that they can be replaced or regenerated separately. If you mix them, there is really no way to replace or regenerate separately unless you separate the resins. Regeneration requires strong chemicals (acid and caustic) so most people just throw it out and replace it.

Dub · Oct 22, 2020

piranhaman00 said:
Hello,

I found out I am on city water so CO2 should not be the issue, I did not however test this. Imo degassing RO water then pumping through DI resin is more work then just replacing the resin more often. The reason for my fast depletion of resin is still a mystery, I am getting about 60 gallons per canister. Its quite odd. I was in fact just yesterday contemplating trying the anion or cation resin and seeing if it would help.

A lot of muni water systems are well water with high CO2. get it tested!! My muni had 65ppm CO2 and ate up my DI.