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  1. #1

    Question propylene glycol disposal

    need to dump closed loop system treated with prop. glycol - floor drain? rules on this? where to find? in MA

  2. #2
    Join Date
    Sep 2002
    Posts
    11,536
    Propylene glycol is generally non-toxic and much of it is even food-grade.

    But I am a voice on the internet - better to call the maker and ask them what they suggest. They will know what the requirements are for their products.

    PHM
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    Quote Originally Posted by jcboston View Post
    need to dump closed loop system treated with prop. glycol - floor drain? rules on this? where to find? in MA
    PHM
    --------
    The conventional view serves to protect us from the painful job of thinking.

  3. #3
    Since posting I already have talked with the manufacturer of the glycol. They said it was ok to dump up to 300 gal into sewer. But wanted to hear from others.
    You make sense thanks Poodle Head

  4. #4
    Join Date
    Sep 2008
    Location
    Western PA
    Posts
    24,940
    Quote Originally Posted by jcboston View Post
    Since posting I already have talked with the manufacturer of the glycol. They said it was ok to dump up to 300 gal into sewer. But wanted to hear from others.
    You make sense thanks Poodle Head
    I would also check with your local municipality to see if they've got regulations covering this.

    Dumping several hundred gallons of Propylene Glycol could cause problems at a treatment plant or be considered "pollution" regardless of how "safe" it is.

  5. #5
    Join Date
    Apr 2006
    Location
    Massachusetts
    Posts
    113
    Had to dump a closed loop a few years ago. Called and talk to water treatment plant. They had no issue as long as It wasn't over 200 gallons at a time. Took a couple of days.

  6. #6
    Join Date
    Sep 2002
    Posts
    11,536
    The last time we had to do this I went to a drum recycler place and bought 50 gallon plastic drums for $10. each. I forget how many now but it was a large trailer load. Then we stored the brine, re-installed it, and then returned the drums for $4. each. Say it was 25 drums - so $350. for "drum rental fee". <g>
    PHM
    --------
    The conventional view serves to protect us from the painful job of thinking.

  7. #7
    Join Date
    Oct 2009
    Location
    Raleigh, NC
    Posts
    774
    I have had to call our water treatment plant about this too. They said what others here have, that we could but only a couple hundred gallons a day so as not to foul their microbiological processes that break down the sewage there.

  8. #8
    Join Date
    Jan 2006
    Posts
    25
    we had to drain two 250hp boilers @north Attleboro,state of mass considers straight boiler water as a pollutant thanks to barney frank,so glycol is also considered toxic and must be documented,,,,,,good luck,,,the plastic barrel deal works good.

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