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Thread: Second R/O

  1. #1
    Join Date
    Feb 2011
    Eagle lake Maine

    Default Second R/O

    I'm curious if anyone has installed a second r/o rather than adding another membrane to a 600 gph unit. I'm considering doing this to enable me to concentrate to higher brix in a single pass and also give redundancy. If one failed, I'd still be able to process sap. On big runs like we had last week, a 600 isn't quite enough.

  2. #2
    Join Date
    Jun 2011
    Northern Michigan


    You might want to PM JohnJenner on MT as this is what he did this past season.
    16' X 24' Sugarhouse
    2' X 6' Leader Inferno Arch with Revolution Raised-Flue Pans, Smoky Lake preheater and hood
    Deer Run Maple gas-powered 250 RO
    WesFab 7" filter press
    Kubota 1100 RTV with tracks and 125 gallon tank for transporting sap
    600+ taps on gravity and vacuum
    Very supportive wife who is the best coworker

  3. #3
    Join Date
    May 2015


    an additional post will be more cost effective in the sort term. I was looking at the 2 RO route a while back, but in the end just decided to go with 1 that had multiple pressure pumps for redundancy which may be an option for you as well.

  4. #4
    Join Date
    Feb 2016
    Peru, Maine


    The owner of 5400 tap operation we worked for in Byron had 2 CDL 600 RO's. He was always around so keeping up with sap was not an issue. He did add a 3rd tower to concentrate to higher brix. Not sure of his settings but he was getting 19 brix in 1 pass with 3 towers. The other RO was just a spare. He bought it used for a decent price and it saved his butt more than once when one of the pumps went and another time when the turbo went. I am not sure why he went with a tower vs. having 2 in tandem but I will ask him. Probably the plumbing work and RO room size was part of it.
    270 taps on 2 Shurflo's, 31 taps on 3/16" and 120 taps on gravity. 421 total for 2021 season.
    Mountain Maple S3 controller for 145 of the vacuum taps
    2x6 Darveau Mystique Oil Fired Evaporator w/ Smoky Lake Simplicity Auto Draw
    Wesfab 7” filter press
    IBC totes in the woods, 800 Gallon CDL bulk tank at the shack

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