recharging DI resins

[Anonymous]

I have a separate resin DI purification system, and I'm curious about quantity of chemicals to use to recharge the cation & anion. I realize a red devil lye (for the base) & murriatic acid (acid dur) to recharge but how much is needed of each to X amount of resin for each?

Are there any faqs around someplace, I found one but it showed how to fix a mixed-bed one.

 

[cjsrch]

should of come with instructions if it was ment for recharge.. i know kent sells a recharge system. and a non rechargable one .. they both look the same

 

[Anonymous]

Look at rec.aquaria.reef.marine newsgroup, and Gary Deutman (?) has a DIY instruction for it. Sorry, but I don't have the exact link... it is well known link among the old farts.

For mixed bed resin, you need to separate the cation and anion with the gravity method. If you have a separated resin, then it is alot more easy to recharge. Be very careful, and make sure you got a goggle on.

 

[liquid]

http://www.reefs.org/library/article/g_deutschmann.html

http://www.reefs.org/library/article/twp_recharge.html

Shane

 

[Anonymous]

Yeah I have the resins already separate, and all those reefs.org instructions are to tell you how to separate a mixed bed while recharging.

 

[liquid]

Actually:

http://www.reefs.org/library/article/twp_recharge.html

gives you specific amts of each component.

Shane

 

[Anonymous]

Yeah and that gives specific amounts for the mixed bed that you separate, unless you use the same amount for separated resins.

Eitherway the more and more I look at this, the more I feel I shouldn't be so damn cheap, and should just get a whole house sediment filter, then run the RO/DI unit after that. Perhaps get a booster pump and run two membranes in series and just shut them off when they're not in use. Maybe it'll cost me a couple hundred extra, but might be worth the money if I don't want to worry about having the wind change on me and inhaling some chlorine gas

 

[Anonymous]

There used to have some DI resin recharge service where you send a bucket of resin (say, 5 gal) to them, they recharge it for you, and send it back.

It is easy once you set it up, and you can do it as batch, but for something that you need to do once a year, it can be a lot of hassle.

I won't worry about the chlorine gas. Just make sure you don't mix ammonia with the HCl. What I worry about is the strong acid/base. Don't wear pants that you will not wear if they got holes on it... remember, glove and goggle, and dirty pants.

 

[liquid]

You mean you guys don't have access to a fume hood and lab coats? That's one advantage I have working in a lab. hehe

Shane

 

[Anonymous]

Yah, I'm thinking of the hassle aspect of things. How much resin would I go through in a year, a lot in my current DI only setup, but then how much money do I save? Plus being as I moved my tanks downstairs the RO/DI unit is closer to the outside so I can setup the output up to watering system

And no lab coats nor fume hoods, I do have heavy duty gloves & eye protection though (a few years back I used quite a bit of chemical wood strippers). Although my physics lab is right across from the chemistry lab... there's fume hoods there