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Thread: Cleaning and sanitizing the Reverse Osmosis system

  1. #1
    Never Knows Best gill_za's Avatar
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    Cleaning and sanitizing the Reverse Osmosis system

    Hello,

    I have a 4yr old Reverse Osmosis system sitting a garage that has not been used for at-least 2 years.
    Filter Direct Online Store (C)

    I would like to bring the system back to life and use it for plants and drinking water both. After sitting idle for so long I bet it is borderline a biohazard at this point. So the plan is:

    1. Remove the filters, resin and drain the unit
    2. Wash it and sterilize it
    3. Replace all filters and resin.
    4. Profit!

    Question: What cleaning and sterilization agents can I use to make sure that nothing survives? I want to achieve a complete purge within the unit

    Thank you!

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    Greetings from the netherworld. curtisconners's Avatar
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    I suggest rubbing alcohol combined with a rinse of hot water. I've never owned an ro unit though.
    The profile pic that you see above is my actual photo. I am a hyper-intelligent snake that has learned to use the internet and I will eventually rule you all.

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    Never Knows Best gill_za's Avatar
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    Interestingly Rubbing alcohol does not always kill acetic bacteria if I am not mistaken. I would use 3% Peroxide but its contact time to kill is long. Bleach solution would I am afraid leave a stink in it for a long time. I have "Star San" which is an acidic sanitization agent (probably phosphoric acid based) but it has added surfactants and also is pretty mild I think. I use it to sanitize brewing equipment. Hmm...

    Av8tor1, are you here?
    Last edited by gill_za; 03-29-2016 at 09:39 AM.

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    Fred

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    I would suggest to look how much a new system would cost.
    Replacing the RO membrane and all the filters could cost as much as a new system.

    Sent from my phone, so sorry for mistakes

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    Never Knows Best gill_za's Avatar
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    Quote Originally Posted by fredg View Post
    VIDEO
    Thanks, I did see the video, but was wondering if people here had additional suggestions.

    It looks like my filter IS basically a USwater system. I briefly considered buying the kit from them with membrane and resin but Filter-direct comes out cheaper.

    Quote Originally Posted by YaronR View Post
    I would suggest to look how much a new system would cost.
    Replacing the RO membrane and all the filters could cost as much as a new system.

    Sent from my phone, so sorry for mistakes
    Unfortunately, it definitely would be more expensive to replace the entire unit than a set of filters and maybe some tubing

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    Quote Originally Posted by gill_za View Post
    Interestingly Rubbing alcohol does not always kill acetic bacteria if I am not mistaken. I would use 3% Peroxide but its contact time to kill is long. Bleach solution would I am afraid leave a stink in it for a long time. I have "Star San" which is an acidic sanitization agent (probably phosphoric acid based) but it has added surfactants and also is pretty mild I think. I use it to sanitize brewing equipment. Hmm...

    Av8tor1, are you here?
    I also though brewing equipment sanitizer could do the job

    Or you could use: Iodophor in a water solution and soak it.
    You could also try boiling water, but that would mean you will have to submerge the unit into water that is kept boiling for a specific time period.

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    I would use a 10% bleach solution then rinse with tap water and let dry.
    If for no other reason than it is the industry standard for bloodborne pathogen clean up, etc etc
    Most of the funk will be contained in the prefilters and membrane since that is where the bacteria had something to munch on long term.

    Be sure to make sure the membrane check valve is free of gunk

    just my humble opinion
    Av
    Last edited by Av8tor1; 03-31-2016 at 07:00 AM.

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