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I have an air water ice typhoon extreme III 150 GPD RO/DI. It is cool, no complaints, but I want to max it out for output and efficiency. Soooo... I know that some people use dual online membranes, how do I do it? Put waste water through a second membrane and that's it? I'm planning on needing a booster pump anyways, I get only about 40psi as it is now so that'll help to have it bumped up. Any suggestions on what booster pump to get? Also, what membrane and housing? Is it that simple to do? I'll need to take reject water from membrane 1 and feed through membrane 2, then combine both outputs from membranes and run through the DI? or do I get a second DI for the second membrane output?
Shows how it can be done sort of. But brs doesn't have 150 god membrane? Too early for me. Gotta look at them later... Still font know where to get the parts from and what brand of membrane if it matters.
Most duals use two 100gpd. They tend to be the most efficient.
I do not know of a normal booster pump that can handle 300gpd. Even for my 180gpd I have to buy a special one.
So should I switch the membrane I have to a 75 or 100 to double up? Really want to conserve water and save money here. I run the filter A LOT! any other ideas are welcome
I called AWI about this when I was buying mine, I ended up getting the 150 on the typhoon, and a 75 on the waste water line... I can have my wife take pictures in a little while to show you...
Dustin
Cool. I can imagine how that would be I think, hadn't thought about two different rated membranes, for some reason I thought they would have to be the same. Seems like a reasonable idea to me...do you use a booster pump?
Nope, I installed it under the sink, I have a pretty decent amount of pressure there...
Dustin
I would think you'd want the larger one on the waste water line , because if you do the 150 first, its waste (assume 4:1) will be 600 gpd pushing through a membrane that can only handle 375gpd total (again assume 4:1 so 300gpd waste + 75gpd clean), so where do those extra 225gpd go? More waste than you want? Extra back pressure on the first membrane?
-Mike 
Hmmmm. Anybody else? This makes some sense to me... But I don't know what is best
A good article/thread here:
http://www.atlantareefclub.org/forums/showthread.php?t=12845
http://www.youtube.com/watch?v=HBkFi_4kiDk&feature=player_embedded#at=21
<º))))>< ..... Have fun every day! ..... ><))))º>
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