RODI - going through Anion resin like candy

[KStatefan]

That is good.

My anion last about 500 gallons after my degassing chamber.

 

[WhatCouldGoWrong71]

That is good.

My anion last about 500 gallons after my degassing chamber.

Can a degassing chamber simply be a 55G brute(s) with airstones?

 

[KStatefan]

Can a degassing chamber simply be a 55G brute(s) with airstones?

Mine is a piece of 4" pvc pipe that then overflows in the a 5 gallon container with a pump to pump thru my DI

 

[jepuskar]

Can a degassing chamber simply be a 55G brute(s) with airstones?

That is what I'm doing..ok, well actually 45g brute with an Eheim bubbler going on it. About 24 hours or so does the trick and then I pump it through DI into my RO storage unit. I'm lucky to have the space for the brute...i've seen numerous posts with people having issues dialing in flow rates with other setups.

 

[jdog6973]

Okay, I need to chime in on this one. I recently set up a new system at my house and am also going through half of my Anion cartridge in 120 gallons of product water using a Spectrapure Max cap system modified with one sediment filter, two carbon blocks, one RO membrane, Cation Anion, and mixed bed di. The water supply is city water running through my water softener. I was going to pack another Anion filter and not use softened water this time and see if something is leaching out of the water softener resin. The water is in a water tower for days, so it should off-gas any CO2. The village also uses Sodium Hypochlorite at 12.5-15% solution strength.
Randy, I would love you to chime in on this one again. I'm wondering why this is happening.

 

[jepuskar]

I'm not Randy, but I'm waaay less qualified. What is the PH of you water before any water softening?

 

[jdog6973]

I'm not Randy, but I'm waaay less qualified. What is the PH of you water before any water softening?

The PH of the water going into the softener is 7.48, and the coming out is 7.68.

 

[KStatefan]

The water is in a water tower for days, so it should off-gas any CO2.

Have you tested for CO2 in your source water?

My source water comes from wells then to a water tower and I have high CO2.

 

[Koty]

That is why I don't do water changes; I only do ATO. In my country, I start with about 700 TDS and 30-40 after RO and before the resin. I found that using two properly packed resin columns in tandem reduces the rate of resin replacement.

 

[Randy Holmes-Farley Verified Community Expert]

Okay, I need to chime in on this one. I recently set up a new system at my house and am also going through half of my Anion cartridge in 120 gallons of product water using a Spectrapure Max cap system modified with one sediment filter, two carbon blocks, one RO membrane, Cation Anion, and mixed bed di. The water supply is city water running through my water softener. I was going to pack another Anion filter and not use softened water this time and see if something is leaching out of the water softener resin. The water is in a water tower for days, so it should off-gas any CO2. The village also uses Sodium Hypochlorite at 12.5-15% solution strength.
Randy, I would love you to chime in on this one again. I'm wondering why this is happening.

What is the tds of the water getting to the di?

 

[jdog6973]

What is the tds of the water getting to the di?

The water going into the RO membrane is 231, and coming out is 2. So the answer to your question is 2 Tds going into the DI cartridges.

 

[Randy Holmes-Farley Verified Community Expert]

The water going into the RO membrane is 231, and coming out is 2. So the answer to your question is 2 Tds going into the DI cartridges.

Wow, that is a good drop. That 2 ppm tds should make the di last quite a while. CO2 is the only thing that can deplete the anion that gets through an ro at low tds.

 

[jdog6973]

Wow, that is a good drop. That 2 ppm tds should make the di last quite a while. CO2 is the only thing that can deplete the anion that gets through an ro at low tds.

I have a call into the village. The water guru and I talk quite frequently, and I am also getting a CO2 test kit from Hanna. I will keep the form updated on my findings.
What is the most cost-effective and efficient way to degas CO2 from the supply water?

 

[jepuskar]

There is an inline method people do, but I didn't want to fiddle with it, so what I did was take my water post softener straight into my RO unit, from there into a brute with two bubblers in it. I let it bubble for 24 hours, which is probably longer than needed, but it's what I do...I then pump that water into my DI stages and into my mixing container.

Significantly reducing the Anion usage... it was lame at first to go through all of this, but now it's just what it is and I don't give it much thought.

 

[KStatefan]

I have a call into the village. The water guru and I talk quite frequently, and I am also getting a CO2 test kit from Hanna. I will keep the form updated on my findings.
What is the most cost-effective and efficient way to degas CO2 from the supply water?

I run mine into a degassing chamber which is just a 4" piece of pvc standing up which holds about 5 gallons. This overflows in to a 5 gallon jug that has a high-low tank controller on it running a pump the pumps it thru my DI.

 

[jdog6973]

I have a call into the village. The water guru and I talk quite frequently, and I am also getting a CO2 test kit from Hanna. I will keep the form updated on my findings.
What is the most cost-effective and efficient way to degas CO2 from the supply water?

So today I looked in the jar I have been keeping my used Anion resin in and noticed it was blue again, does this mean it’s still good?

I run mine into a degassing chamber which is just a 4" piece of pvc standing up which holds about 5 gallons. This overflows in to a 5 gallon jug that has a high-low tank controller on it running a pump the pumps it thru my DI.

so I noticed the used anion resin I put in a jar to replenish at a later date had turned blue again, does this mean it’s still good even though it turned white in the di canister?