+ Reply to Thread
Page 2 of 2 FirstFirst 12
Results 11 to 15 of 15

Thread: permeate .7 ?

  1. #11
    Join Date
    Sep 2015
    Location
    Rumney NH
    Posts
    126

    Default

    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 226 taps 30x8 12x16 shack with 8x8 kitchen 250 waterloo ro 63 gal
    2021 230 taps 30x8 12x16 shack with 8x8 kitchen 250 waterloo ro 37 gal
    2022 230 taps 30x8 12x16 shack with 8x8 kitchen 250 waterloo ro 55 gal
    2023 235 taps 30x8 12x16 waterloo ro 50 gal
    2024 54gal

  2. #12
    Join Date
    Mar 2008
    Location
    Canaan NH
    Posts
    373

    Default

    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
    150 Taps on Vacuum
    Homemade 20"x40" Hybrid Pan - 15 gph
    Homemade Steamaway - 10 gph
    Waterguys single-post RO

  3. #13
    Join Date
    Mar 2005
    Location
    Albion PA
    Posts
    5,099

    Default

    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
    625 roadside taps + Neighbors bring some sap too!
    3x10 King, WRU, AOF and AUF
    12" SIRO Filter Press.
    2015 Ford F250 PSD sap hauler
    One Golden named Maggie, Norwegian Forest Cat named Lucy
    Too many Cub Cadets
    Ford Jubilee and several Allis WD's, and IH tractors
    1932 Ford AAB ton and a half, dump truck

    www.mapleandhoney.com

  4. #14
    Join Date
    Sep 2015
    Location
    Rumney NH
    Posts
    126

    Default

    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 226 taps 30x8 12x16 shack with 8x8 kitchen 250 waterloo ro 63 gal
    2021 230 taps 30x8 12x16 shack with 8x8 kitchen 250 waterloo ro 37 gal
    2022 230 taps 30x8 12x16 shack with 8x8 kitchen 250 waterloo ro 55 gal
    2023 235 taps 30x8 12x16 waterloo ro 50 gal
    2024 54gal

  5. #15
    Join Date
    Jan 2006
    Location
    Oneida NY
    Posts
    11,566

    Default

    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, I recently ordered a 2x6 wood fired evaporator from A&A Sheet Metal which I will be converting to oil fired
    Now have solar, 2x6 finish pan, 5 bank 7x7 filter press, large water jacketed bottler, and tankless water heater.
    Recently bought another Gingerich RO, this one was a 125, but a second membrane was added thus is a 250, like I had.
    After running a 2x3, a 2x6, 3x8 tapping from 79 taps up to 1320 all woodfired, now I'm going to a 2x6 oil fired and a 200-425 taps.

+ Reply to Thread
Page 2 of 2 FirstFirst 12

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts