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Thread: RO membrane

  1. #1
    Join Date
    Oct 2017
    Location
    Williamstown, MA
    Posts
    3

    Default RO membrane

    Had a rush at end of last season and did not store my membranes in permeate or solution, just dry...my bad I know. I had done a thorough soap and acid wash and rinse at the end of the season then put them in their storage vessels. Opened them the other day and it smelled like dirty old socks. If I use them this season, I'll run 500gal of sap through them to start the season, do an acid wash and rinse; will they be ok? Thanks for any input.

  2. #2
    Join Date
    Jan 2006
    Location
    Oneida NY
    Posts
    11,583

    Default

    I'm not sure if they can be salvaged, personally I'd buy a new membrane and be sure you never do that again.
    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.

  3. #3
    Join Date
    Feb 2017
    Location
    NY
    Posts
    124

    Default

    If the membrane dried out it can not be saved. The TFC membranes have to stay moist (ideally saturated) after they are put into service.

  4. #4
    Join Date
    Mar 2012
    Location
    Walpole, NH
    Posts
    1,376

    Default

    MES or Maple Expert Solutions in Henniker, NH has new membranes quite reasonably priced if you decide to buy new ones.
    Sugaring for 45+ years
    New Sugarhouse 14'x32'
    New to Me Algier 2'x8' wood fired evaporator
    2022 added a used RB25 RO Bucket
    250 mostly Sugar Maples, 15% Soft Maples. Currently,(110on 3/16" and 125 on Shurflo 4008 vacuum, 15 gravity), (16,000 before being disabled)
    1947 Farmall H and Wagon with gathering tank
    2012 Kubota with forks to move wood around

  5. #5
    Join Date
    Jan 2006
    Location
    Oneida NY
    Posts
    11,583

    Default

    After the season, do a full soap wash, an acid wash and complete rinse, then use preservative as recommended by the membrane manufacturer. With proper care membranes will normally last 8 years or more.
    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.

  6. #6
    Join Date
    Oct 2017
    Location
    Williamstown, MA
    Posts
    3

    Default

    Thanks all, new membranes on order.

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