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RO waste water

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Adam Blundell View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Adam Blundell Quote  Post ReplyReply Direct Link To This Post Posted: February 10 2009 at 2:31pm
Sorry for the delay.  I finally spoke with Dal Wayment from the South Davis Sewer District (Manager).
 
1) He says they never have to add water during the treatment.  He clearly stated we should be looking to save water, as it really is wasted once it goes down the drain.  So running your RO line out to the garden is a good use for it. 
 
2) For the water that does go down the drain, it is surely insignificant compared to the tens of thousands of gallons they get per day.  He wasn't at all concerned.
 
3) The real water they don't want is your salt water.  In order for them to process the waste they must filter the water to a certain level of TDS.  Our salt water going down the drain just makes their job more difficult.  Then again he didn't have any good alternatives on what to do with our old salt water.
 
Adam
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Mike Savage View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Mike Savage Quote  Post ReplyReply Direct Link To This Post Posted: February 10 2009 at 4:37pm
Great info Adam! I hope this helps us act resposibly with respect to wasted water. I know it has made me think more about it.
 
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Ryan Thompson View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Ryan Thompson Quote  Post ReplyReply Direct Link To This Post Posted: February 10 2009 at 8:16pm
There is a new RO unit out that makes 2 gallons of RO water to 1 gallon of waste. It is terribly expensive however. It was like 900 bucks last time I looked.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote ecfarr Quote  Post ReplyReply Direct Link To This Post Posted: February 15 2009 at 11:21pm
what is wrong with feeding it into the toilet's water tank?  I have stored my waste water in water containers and after doing my dirty work, I remove the top from the back of the toilet, flush and after the water drains all the way i pour in waste ro water fast before it fills up with water from the house line. 

    i know that this is cumbersome and after a couple hundred gallons i am not faithful at reusing all my waste ro water.

    one suggestion would be to store the waste water in a garbage bin in the garage or outside and pump the water to the toilet.  if you have a toilet in the basement it could be gravity fed.

    you could attach the line to the metal tubing that comes off the toilet and taps into the house water line.  if you did that, you can make use of the toilets auto-topoff mechanism and it would be hassle free.  any failure to the toilets auto-topoff only sends water down the drain.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote tazman1982 Quote  Post ReplyReply Direct Link To This Post Posted: April 06 2009 at 6:25pm
Here is another Question on the Wase water, (I am new to the RO/DI stuff.)
Is the "waste" water safe to drink? I know it has been through 3 stages (on mine) then dumped off after the membrain. or is it just pure crap?
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Post Options Post Options   Thanks (0) Thanks(0)   Quote snoyce Quote  Post ReplyReply Direct Link To This Post Posted: April 07 2009 at 7:50am

The waste water has a higher TDS than what you get out of the tap but the RO does not add anything so the waste water is as safe to drink as the tap water.

I believe the system Ryan is talking about is the SpectraPure Ultra High efficency, yah it is $900, you can read more about it here:
 
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