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-   -   RO/DI Unit Questions (http://www.canreef.com/vbulletin/showthread.php?t=54109)

ILIKECOUGARS 07-05-2009 09:55 PM

RO/DI Unit Questions
 
Hi,
I just pick up a new 75 GPD RO/DI unit, when I was in Calgary last month, and was wondering whats the ratio of the waste to good water should be? I just connected it up and it seems to produce a lot more waste water than good, is there a break in period for the RO membrane?
Thanks,
Ed.

xtreme 07-05-2009 09:57 PM

It is normal to produce more waste water than good. I think the ratio is like 3 or 4:1

mark 07-05-2009 10:43 PM

3-4:1, ro's aren't the greenest

PoonTang 07-05-2009 10:56 PM

pressure and temperature of the infeed water play a big part too, but normal is about 4:1

ILIKECOUGARS 07-05-2009 11:09 PM

Yea, I kind of thought that. Looking like it's about 3.5 to 1 right now. I quess it would be a matter of time, a few W/C to see a differents it would make. I had always use tap water.
Ed.

Funky_Fish14 07-06-2009 08:47 AM

A booster pump will very much alter or change your ratios. I have two 50gph membranes hooked up in series, with a booster pump running before them... and im getting at least 2:1 waste to good water, or better. Even with COLD water going in.

Werbo 07-06-2009 02:53 PM

Could you provide the specifics of this "booster" pump that you are using?
Make, model, where you bought it, ect.
Thanks,
Tyler

Adam NS. 07-06-2009 03:28 PM

Quote:

Originally Posted by mark (Post 432992)
3-4:1, ro's aren't the greenest

They are if you plumb them to water the garden with your waste water.

fkshiu 07-06-2009 04:48 PM

Quote:

Originally Posted by Adam NS. (Post 433122)
They are if you plumb them to water the garden with your waste water.

Or use it for your washing machine.

Adam NS. 07-06-2009 08:24 PM

Quote:

Originally Posted by fkshiu (Post 433133)
Or use it for your washing machine.

????????? please xplain

Adam


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