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Old May 3rd, 2016, 08:04 AM
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Default No permate or soft water?

It was a very strange season here in northern Michigan. The weather/trees never really cooperated very often. That being said at the end of the year I rinsed my RO with the permate from the days run anticipating that there would be plenty of days of the season left....NOPE! My question is what do I do to put my RO to bed for the year now? My water is hard. and so is all the water in the area. will using my well (hard water) adversely affect my membrane? If so.... Now what? Thanks for any input
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Old May 3rd, 2016, 08:18 AM
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Originally Posted by whalems View Post
My question is what do I do to put my RO to bed for the year now?
Possible options:

1. Send the membrane out for cleaning and benchmarking.
2. Find a nearby maple producer who has some spare permeate.
3. Get a deionizing cartridge and treat your well water.

Option #3 also gives you some flexibility in cleaning for start-up next spring. Just run it slow over several days and don't empty your well.
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Old May 3rd, 2016, 08:37 AM
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[QUOTE=DrTimPerkins;61935]Possible options:


3. Get a deionizing cartridge and treat your well water.

Could I use a deionizing cartridge in my prefilter on the RO itself or should this be a stand alone filter to a tank?
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Old May 3rd, 2016, 09:50 AM
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How far away are you from any municipal water that is soft? If you could haul enough and let it set a couple of days to remove chlorine, that might work too. Another thought, what if you ro your well water to fill your permeate tank and send to drain the concentrate, then use the permeate to clean the RO?
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Old May 3rd, 2016, 09:58 AM
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How far away are you from any municipal water that is soft? If you could haul enough and let it set a couple of days to remove chlorine, that might work too. Another thought, what if you ro your well water to fill your permeate tank and send to drain the concentrate, then use the permeate to clean the RO?
essentially that is my question. Will the hard water hurt my membrane? I don't have a good way to haul that much water.
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Old May 3rd, 2016, 12:12 PM
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What is it about tap water that is harmful for RO membranes? My inlaws have an RO for their tap water and it seems to be fine. Is it just municipal water that is a problem? Or is well water a problem as well? The biggest problem I can see with well water is the hardness, but then again sap has calcium and magnesium in it as well so....
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Old May 3rd, 2016, 02:48 PM
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My well water is very hard and has lots of iron in it. The first year I had the RO, the guy that sold it to me told me to just rinse it with 500 gallons of well water before using it. I did. The RO performed at about 1/2 of what it should have because I had basically clogged it before I started. It went back to the company for its "free" cleaning and I had better advise the following year. Ever since I have sacrificed about 500 gallons of first run, lousy sap for initial rinse and make permeate and then rinse with that permeate. Machine has performed at full potential with the same membrane for the 6 ensuing years.
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Old May 3rd, 2016, 02:56 PM
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Originally Posted by Thompson's Tree Farm View Post
My well water is very hard and has lots of iron in it. The first year I had the RO, the guy that sold it to me told me to just rinse it with 500 gallons of well water before using it. I did. The RO performed at about 1/2 of what it should have because I had basically clogged it before I started. It went back to the company for its "free" cleaning and I had better advise the following year. Ever since I have sacrificed about 500 gallons of first run, lousy sap for initial rinse and make permeate and then rinse with that permeate. Machine has performed at full potential with the same membrane for the 6 ensuing years.
I can do that as well but what do I do for "water" to do the end of the season shut down with now is my question. Thanks for the replies guys! Keep them coming
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Old May 3rd, 2016, 03:23 PM
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Could I use a deionizing cartridge in my prefilter on the RO itself or should this be a stand alone filter to a tank?
Either way depending upon what you can get and if the flow rates through the cartridge and your well supply can support what the RO needs.

For those other posters....I'd suggest this route (deionizing cartridge) even if you use municipal water, in order to remove the chlorine, which is not good for many membranes.
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Old May 3rd, 2016, 08:34 PM
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whalems; A thought,, if water around there is that hard talk to some of the water softener sellers. They might have a large customer with big RO system that might be willing to 'sell' you some some of their "soft" water,,,, what we are calling permeate.
Would they not be one and the same????? They would be consecrating the "hard" minerals and dumping, that.
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