R/O unit question

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diablo

sand loving outcast
Joined
Jul 11, 2005
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How do you make a R/O unit more effective?

I have a 5 stage R/O DI unit that is rated for 100 GPD. My PSI is at 40 and it makes about 60-80 GPD. Seems to waste a ton of water.

How could you make it have less waste and more GPD?
 
The proper setting is about 3 parts of waste water to one part of RODI water according to the filter guys, I always just have the waste water drain into the washer so it is not all wasted.
 
Booster pump and a second membrane. I'd switch to a dow filmtec 75gpd x2 with a booster pump to get it up to 65psi at the membrane. Almost no waste and no time to make enough water for a big water change.

Don
 
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