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#1
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Zero Loss Reverse Osmosis - Anyone Using One?
I am interested in buying a zero loss reverse osmosis water filter for
our kitchen. Watts seems to be the only one who makes one. http://www.costco.com/Browse/Product...Path=103*4715* Anyone have any experience with these, pro or con? They operate differently from regular reverse osmosis filters in that they have an A/C powered pump as part of the system. Dick |
#2
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Dick wrote:
I am interested in buying a zero loss reverse osmosis water filter for our kitchen. Watts seems to be the only one who makes one. http://www.costco.com/Browse/Product...Path=103*4715* Or you could adapt any of the RO systems to dump the brine into the hot water supply, as Watts does. http://www.pure-earth.com/PDF/Zero-W...etrofit-WP.pdf |
#3
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On Sat, 19 Feb 2005 18:15:28 GMT, "Travis Jordan"
wrote: Dick wrote: I am interested in buying a zero loss reverse osmosis water filter for our kitchen. Watts seems to be the only one who makes one. http://www.costco.com/Browse/Product...Path=103*4715* Or you could adapt any of the RO systems to dump the brine into the hot water supply, as Watts does. http://www.pure-earth.com/PDF/Zero-W...etrofit-WP.pdf Good find! I'm not yet sure just how this works, but I will study it and see. Thanks. Dick |
#4
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Where does the Excess water go.
It isnt RO unless there is waste water RO is usualy overkill in the USA, and it removes minerals, necessary for Good health, I junked mine after full research |
#5
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m Ransley wrote:
Where does the Excess water go. It isnt RO unless there is waste water RO is usualy overkill in the USA, and it removes minerals, necessary for Good health, I junked mine after full research The excess water goes into the hot water line. I considered this but wondered if it might be corrosive for potable water lines and hot water appliances. I agree RO is usually overkill. It covers paranoia for people who are mixing baby formula, etc., and the minority with real issues such as too much sodium or arsenic. If one is on city water, it's worth noting that RO removes fluoride. My familyis on a well with undetectable amounts of fluoride, so it was a non-issue. I do not believe the claim that removing minerals from water harms health. One gets the vast majority of these from food, not water. Imagine how much hard water one would need to drink to get adequate calcium... There was however a study which linked reduced hardness to a reduced recurrence of heart attacks in individuals (see http://news.bbc.co.uk/1/hi/health/3396141.stm). While I believe this merits additional study, I don't think one should jump to conclusions about health dangers of soft (or RO) water or supposed benefits of drinking hard water. Victor |
#6
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#7
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Dick wrote:
The waste water is pumped into the hot water line. How it accomplishes that I haven't figured out yet. Seems like swimming against the tide. That's why it has a pump. The brine flows into the hot water line, displacing some of the water contained in the water heater tank into the cold water line. Which of course then flows back into the inlet of the RO system. |
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On Sat, 19 Feb 2005 23:23:45 GMT, "Travis Jordan"
wrote: Dick wrote: The waste water is pumped into the hot water line. How it accomplishes that I haven't figured out yet. Seems like swimming against the tide. That's why it has a pump. The brine flows into the hot water line, displacing some of the water contained in the water heater tank into the cold water line. Which of course then flows back into the inlet of the RO system. But what I don't understand is where does all that water go? If it takes 4 gallons of waste for every 1 gallon of filtered water, I don't see how you can stuff 4-gallons of water into a water heater that is already full. There may be a little room, but 4-gallons? Maybe it just puts a little at a time into the hot water tank when there is room. Everyone seems to refer to the waste water as brine. Where does all this salt come from? Or is that just a term given to the waste water? |
#9
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Yes where does it go, or does it go down the drain?
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#10
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#11
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Dick wrote:
But what I don't understand is where does all that water go? If it takes 4 gallons of waste for every 1 gallon of filtered water, I don't see how you can stuff 4-gallons of water into a water heater that is already full. There may be a little room, but 4-gallons? Maybe it just puts a little at a time into the hot water tank when there is room. The waste water flows in a loop. It is injected into the hot water line under pressure and migrates back towards the water heater. Displaced water flows out of the cold water inlet of the water heater through the cold water line and back to the RO system. Of course, if you never use any of the hot water (i.e. in a shower, to wash dishes, etc.) then eventually the RO system will start to receive previously processed waste water at it's inlet, and that will cause the RO membranes to have a shortened life. But for most practical purposes the 'zero waste' system should work fine. |
#12
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Good point. We will also be installing an instant hot water tap, but
it will get its source of water from the reverse osmosis filter. On Wed, 23 Feb 2005 16:30:20 -0500, (Greg) wrote: Just be sure you don't cook or make coffee with the hot water On Sun, 20 Feb 2005 18:10:48 GMT, "Travis Jordan" wrote: The waste water flows in a loop. It is injected into the hot water line |
#13
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Condensation
"Dick" LeadWinger wrote in message news On Sat, 19 Feb 2005 23:23:45 GMT, "Travis Jordan" wrote: Dick wrote: The waste water is pumped into the hot water line. How it accomplishes that I haven't figured out yet. Seems like swimming against the tide. That's why it has a pump. The brine flows into the hot water line, displacing some of the water contained in the water heater tank into the cold water line. Which of course then flows back into the inlet of the RO system. But what I don't understand is where does all that water go? If it takes 4 gallons of waste for every 1 gallon of filtered water, I don't see how you can stuff 4-gallons of water into a water heater that is already full. There may be a little room, but 4-gallons? Maybe it just puts a little at a time into the hot water tank when there is room. Everyone seems to refer to the waste water as brine. Where does all this salt come from? Or is that just a term given to the waste water? |
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