Steve,
We use 2 carbon tanks in our DI loop before the resin tanks. We also have 2 smaller carbon tanks in front of 2 smaller resin tanks for our makeup water.(well water)
This gives our DI columns longer life. Both systems are monitored to alert us when change out is needed. We also found using virgin resin vs. recycled lasts
Much longer.
Brien Bush
Process tech.
Cirtronics corp.
Milford, N.H.
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Ed Popielarski
Sent: Tuesday, April 30, 2013 6:58 PM
To: [log in to unmask]
Subject: Re: [TN] Bivar Diss-O-Pads and closed-loop DI systems
Steve,
I did a little research on the internet (everything on the internet is true... the internet says so) and determined lactose is categorized as a disaccharide which is readily adsorbed by activated carbon. It is commonly used as a binder to make pharmaceuticals, including simple aspirin.
I would consider putting 2 carbon tanks (or more) in front of the DI columns separated by a particulate filter to stop any carbon particulates from infiltrating the DI.
To verify it's efficacy, you might want to run a controlled sample through the carbon tanks, i.e., dissolve a handful in your sump pump reservoir take a sample (baseline), run it through the carbon (to drain) and sample afterward. Bear in mind the lag time from the front end of the first carbon tank to the output of the second tank so you may want to take several samples to be sure you got the "slug". You can perform the "analysis" yourself using this method: http://en.wikipedia.org/wiki/Benedict%27s_reagent
I'm not a chemist, but this makes sense to me... any experts that might add/subtract from the above?
Ed Popielarski
Engineering Manager
970 NE 21st Ct.
Oak Harbor, Wa. 98277
Ph: 360-675-1322
Fx: 206-624-0965
Cl: 949-581-6601
https://maps.google.com/maps/myplaces?hl=en&ll=48.315753,-122.643578&spn=0.011188,0.033023&ctz=420&t=m&z=16&iwloc=A
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Steve Gregory
Sent: Monday, April 29, 2013 11:56 AM
To: [log in to unmask]
Subject: [TN] Bivar Diss-O-Pads and closed-loop DI systems
Hi All,
We're getting ready to change our cleaner out with a closed-loop system, and I was wondering if the use of Bivar Diss-O-Pads will harm the DI beds? I have a call into Bivar, but I thought I would ask TechNet while I was waiting.
I know I'm going to have to change the water soluble mask that is currently used to one that doesn't harm the DI beds, but I don't know about the Diss-O-Pads...
Steve Gregory
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