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Thread: permeate .7 ?

  1. #11
    Join Date
    Sep 2015
    Location
    Rumney NH
    Posts
    49

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    hey traders, well though i bring back this old thread. rebult the old ro. new membrane (mes), new housings (pentair),and fixed many leaks. now she runs great. but i'm alittle short on experience. mabey someone here could make some sents of these numbers? so i started with .5% sap that was 51 deg. then turned up the pessure 350psi.i was getting 3% concentrate. flow meters read 4.5 permeate and 1.25 concentrate. does this look right?
    2017 140 taps 30x8 12x16 shack 28.5 gal
    2018 158 taps 30x8 12x16 shack with 8x8 kitchen 44 gal
    2019 223 taps 30x8 12x16 shack with 8x8 kitchen 36 gal
    2020 30x8 12x16 shack with 8x8 kitchen 250 waterloo ro

  2. #12
    Join Date
    Mar 2008
    Location
    Enfield NH
    Posts
    259

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    Changing 0.5% to 1% is removing half the water. So permeate flow would equal concentrate flow in that case. Going from 0.5% to 2% is removing 3/4s of the water, so ratio of permeate to concentrate would be 3:1. 0.5% to 4% is removing 7/8ths of the water, so the ratio would be 7:1.

    0.5% to 3% is about half-way between 3:1 and 7:1, so maybe call it 5:1. You are running 4.5:1.25 or 3.6:1. Seems a little low, but depending on the accuracy of your measurements (especially the 0.5% value), you're in the right ballpark.

    I suggest tasting the permeate. Most people can taste sugar as low as 0.2-0.3% . If you can't taste sugar, you're probably fine. If you still have doubts, take a gallon of permeate and boil it down by a factor of 10, then cool and measure sugar content, but divide the number by 10 to get the value of your permeate.
    Boulder Trail Sugaring
    140 Taps on Vacuum
    Homemade Releaser
    Homemade 20"x40" Hybrid Pan - 15 gph
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    Waterguys single-post RO

  3. #13
    Join Date
    Mar 2005
    Location
    Albion PA
    Posts
    4,633

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    My only question is where are you getting .5% sap? Fall tapping or hand built sap?
    I will not be able to help much as I dont own a R.O.
    Regards,
    Chris
    Casbohm Maple and Honey
    600 roadside taps
    3x10 King, WRU, AOF and AUF
    12" SIRO Filter Press.
    2015 Ford F250 PSD sap hauler
    One Golden named Maggie Cat named Lucy
    Too many Cub Cadets
    Ford Jubilee and several Allis WD's, and IH tractors

    www.mapleandhoney.com

  4. #14
    Join Date
    Sep 2015
    Location
    Rumney NH
    Posts
    49

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    hey sugarmaker, it was hand made this summer. just had to test it .

    "take a gallon of permeate and boil it down by a factor of 10, then cool and measure sugar content, but divide the number by 10 to get the value of your permeate."
    good idea. going to do that this coming season. last year i though my ro was ready ,but was not even close. so this year i want to be sure. thanks for the advice
    2017 140 taps 30x8 12x16 shack 28.5 gal
    2018 158 taps 30x8 12x16 shack with 8x8 kitchen 44 gal
    2019 223 taps 30x8 12x16 shack with 8x8 kitchen 36 gal
    2020 30x8 12x16 shack with 8x8 kitchen 250 waterloo ro

  5. #15
    Join Date
    Jan 2006
    Location
    Oneida NY
    Posts
    9,875

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    Also make sure your test instrument is accurate. Make note that a hydrometer can be knocked off by dropping it into the test cup. It must always be lowered gently.
    Dave Klish about 1320 taps in '15, doing fewer each year, about 450 planned for 2020 (and after?)
    2012 Mahindra 36 HP 4x4/ loader/cab/heat/AC:-)
    added a gooseneck equipment trailer and F350 to tow it to haul more sap
    3x8 raised flue evaporator
    250 GPH converted to electric, RO by Ray Gingerich
    6.32 KW solar system, 1.48KW is battery backed up, all net metered
    http://s1041.photobucket.com/albums/...anssugarhouse/
    website: www.cnymaple.com

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