recharging Di resin......

twintrades · Feb 27, 2013

Ok I had a bucket of di resin sitting around. It was wet then i forgot about it..... Now its dry

Can i still recharge it ? Or should i just throw it out ?

mcarroll · Feb 27, 2013

Try it - I'm curious.

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Eric B · Feb 27, 2013

I would just dip it back in some ro water just to wet it again and would think it would be OK, but I have not recharged any resin in about 15 years and never once dried so I can't tell you for sure. If you are going to throw it out I would try it anyway.....

twintrades · Feb 27, 2013

So how do i know if it worked vs not worked ???

ive never done this before. Just had the LFS give it to me a yr ago.

mcarroll · Feb 27, 2013

Same way you know if the DI in your filter is working - filter some tap water through it and then measure! :-)

-Matt

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twintrades · Feb 27, 2013

I have a meter on my ro unit. Guess ill just have to check the out put on a reg basis.
Ill let you know how it goes

mcarroll · Feb 28, 2013

You could take the TDS probe out and measure a sample in a cup or whatever. You could also temporarily re-plumb the system's tap water input to your DI canister, assuming the probe is on the output of your DI. Run the canister empty to gauge your tap water's TDS, then fill with recharged DI resin and see what TDS you get.

Personally I wouldn't waste the mileage on your prefilter, carbon and membrane (and waste water) to test the recharged DI with everything hooked up. Just leave it as-is in the bucket until you can run a good test.

-Matt

twintrades · Feb 28, 2013

i Added some ro today. Wow those beads sucked up alota water! Now there sitting till i get home to recharge.....

11purewater · Feb 28, 2013

If the resin wasn't exhausted to begin with it should work ,but you cant regenerate DI resin unless you have some Hydrochloric acid and caustic soda handy.:smile:

Linkfalcon · Feb 28, 2013

What do you use to recharge it

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AZDesertRat · Feb 28, 2013

Resins shouldbe separate cation and anion resins, not mixed bed to recharge them properly. Its not worth the hazardous chemicals to me and I work with the stuff every day in municipal water treatment plants.