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Old March 5th, 2013, 06:26 AM
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Default What size ro

Hi we are looking at getting an ro in the near future and we are wondering what size we should get we are looking at probably a spring tech or lapierre. We will have up to a thousands taps with 6-800 on vacuum hopefully high vacuum. We boil on a 3x8 which we haven't ran much but it boils great and we are gonna make a couple more tweaks and it should do about 80 gph at least. My father would be able to start the ro at like noon then I can start the evaporator around 4 o'clock and rinse the machine. I would like to be able to boil two or three hours on an average day. Thanks for all the help.
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Old March 5th, 2013, 06:45 AM
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Looking at this thread with interest because I will have a similar situation in the next year or two.
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Old March 5th, 2013, 01:04 PM
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You'll probably be OK with a 250 GPH machine.
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Old March 5th, 2013, 01:16 PM
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If you can afford it go straight to a 600gph RO. If you can guarantee that the RO will be started at noon then yes you'd be fine, otherwise no. On my big days I get 2gpt plus, biggest day this year was 1900 gal. If I'm recirculating I'm getting rid of say 140 gph , if I'm boiling at the same time as concentrating I'm getting rid of 240 to 250gph. On that big day my dad started the RO at 2pm, the evaporator was started at 5:00, I was done about 11:30pm. So if you want to boil for 3 hours per night max, and can afford it go with a 600.
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Last edited by mapleack; March 5th, 2013 at 02:18 PM.
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Old March 5th, 2013, 05:20 PM
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Thanks for the replies if I get a 600 on a low flow day you think I would have enough permeate to wash with or what would happen if I didnt have enough? Also what if I saved all the extra on a really good day and saved it for low flow days how long would it be good for? I think I will get a used ro probably I see leader has some 600's around the 6 grand range. And one more question what is the smallest ro room I can get away with I don't have a lot of room so maybe I could make it so it folds up and maybe just wheel it out when I have to access it from the back? I am thinking maybe that some kind of styrofoam box that I could take off and on. Thanks again.
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Old March 5th, 2013, 05:25 PM
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Also how bad does niter get with 8% I have only boiled like 750 gallons including the 120 to fill the pans and the sugar sand is very bad I drained the pan and it was like mud in the draw off box the sugar content is around 2.5 on almost all red maples so I am hoping the sand clears up some thank god for the filter press.
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Old March 5th, 2013, 10:09 PM
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As far as I can tell RO doesn't affect niter either way. For permeate, if you can save extra that's good, but on small days you don't have to soap wash every day , a rinse is adequate. If you'd concentrate 600 gallons hard you'd have at least 400 gal of permeate and you could just rinse with that and you'd be fine until the next day.
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Andy Kinter (4th + generation maple producer)
Approx 821 taps on vacuum

3x10 natural gas fired raised flue small bros.
250 gph Lapierre RO
Fine collection of used bulk tanks
Kubota MX5100 sap hauler
Great Family that pitches in
sap dog named Merlin (see pic)

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Old March 6th, 2013, 06:48 AM
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Default permeate

I have often wondered what does anyone do with the permeate? I have heard you aren't supposed to dump in streams. Is this a fact and if so what do you do to dispose of it? thanks
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Old March 6th, 2013, 06:49 AM
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Ok I was really hoping that a 600 would work now we just need to make some syrup to get one
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Old March 6th, 2013, 07:49 AM
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CDL says a minimum 6 ft square area for there RO and thats what I have did. Now dumping 20,000 gallons of Permeate into a small steam might cause a PH imbalance but what does a deluge of rain water do Im dumping my RO water right on the ground next to the shack.
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