Deionization Resin question.
- Thread starter Srt4eric
- Start date
jccaclimber
Supporting Member
Hehe, not unless they are in series (and you don’t want that).
max_nano
Guest
I think you might be better off staying with 2 filters and switching two to resin?
I don’t really know enough about how rodi works, I’m curious to see what others will say.
I need new di for both. Ones putting out 15 tds and the other is putting out 3 tds. Worst case scenario I run it and the water tests worse and I put it back how I found it. Best case it pumps out 0 tds water.
Coral reefer
Past President
I sediment, 2 chloramine 2 membranes, 3 di
Rostato
Guest
100% required in my opinion for the Bay area. Probably a booster pump as well
If they are both filters you got used I would replace all the media...
My problem is that I have it set up outside to fill a 5 gallon water bottle. Since its outside I forget I turned it on. Last time it ran for 3 days before I remembered.
ashburn2k
Supporting Member
You have way too much trust in plastic and rubber. Haha
ashburn2k
Supporting Member
Forgot to comment on your setup last time I saw it, I would move power and controller above the boostpump. You never know when it will leak and drip.
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jccaclimber
Supporting Member
Get an auto shutoff valve with the float valve so you don’t just keep running waste water and exhaust the prefilters.
jccaclimber
Supporting Member
Might have the restrictor orifice built in as well.
Mainly so you don't need to buy the higher priced Aquatic Life cartridges, not so much for something specifically wrong with that unit. Assuming a decent TDS reading (buy a handheld TDS meter), I't still use it until the TDS creeps up to a number you find unacceptable.
Coral reefer
Past President
Wowee
jccaclimber
Supporting Member
Reminds me of the ones behind the anodize line at a former employer. The process for changing the resin in those is a bit trickier than unscrewing the bottom, but at least doing so is extremely infrequent.
Instead of RO they just ran 400 TDS tap straight into DI resin. I forget the flow rate, but it was on the order of hundreds of gallons per hour. The resin was of course recharged in place, but you don’t really want to deal with the chemicals that they used to do that.
At some point I remember the EHS guy explaining that the only reason it was so easy for us to dispose of acids was that we also needed to dispose of a lot of caustics. Drain them all into a 10k gallon holding tank, let the acids and bases mix to become salt water, adjust the ratio until the pH is near neutral, make sure there isn’t anything with additional disposal regulations mixed in, and it’s like flushing your water change down the drain.
Instead of RO they just ran 400 TDS tap straight into DI resin. I forget the flow rate, but it was on the order of hundreds of gallons per hour. The resin was of course recharged in place, but you don’t really want to deal with the chemicals that they used to do that.
At some point I remember the EHS guy explaining that the only reason it was so easy for us to dispose of acids was that we also needed to dispose of a lot of caustics. Drain them all into a 10k gallon holding tank, let the acids and bases mix to become salt water, adjust the ratio until the pH is near neutral, make sure there isn’t anything with additional disposal regulations mixed in, and it’s like flushing your water change down the drain.