RODI unit

[bowhunterj]

Hi, my RODI unit its a 6 stage , there seems to be more water going down the drain than in the good water container. is this the way its to work ? seems like when I slow the drain water down I get more good water , or is it bad to slow drain water to much?

 

[MarkW64]

it's normal for RO to reject (waste) something like 4-5x as much as good water it produces. I've never heard of restricting the waste flow -- I would guess that would lower the quality of the "clean" water.

 

[bowhunterj]

ya that's what I thought , but other filters don't give off waste water so I thought it may not be needed.

 

[LobsterOfJustice]

This is absolutely normal. Restricting the waste line will lower the quality of the clean water and could damage the unit.


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[xREEFINaintEZx]

Check out membrane staging... BRS Tv has a good video. Works best with 36/ or 75 gallon per day membrane.

 

[reefteaser]

Do you have a pressure gauge on the supply side? When I added a boost pump and went from 36-40 to 75-80 my clean/waste ratio went up significantly, and of course, it take much less time to make water.

 

[Sambo107]

Normally a 75GPD unit will make 1 gallon of good water and 4 gallons of waste water. You can buy an upgrade kit with another membrane and youll then make it twice as fast and only produce 2 gallons of waste water for only 1 gallon of good water.

 

[air2mag]

BRS has a upgrade kit for $60 or so that might work for you. They state it will double your "good" water.

 

[Dragon1979]

The upgrade kit comparable to any rodi unit ?

 

[air2mag]

I am not sure. BRS has a good video on it you could check out. Or you could give them a call. They have also been very helpful when I have called with a question. Nice guys.

 

[Dragon1979]

Thanks