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Thread: Clearing a Concrete Grease trap

  1. #1
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    Clearing a Concrete Grease trap

    Hello All,

    How can you clean out and unblock the top part of the goose-neck of the outlet of a concrete grease trap?

    I live on acreage that is not connected to the sewage mains. Due to my neglect the grease trap overflowed after it became full of grease.

    While I was able to clear the main body of the grease trap out and the inside section of the outlet; I could not reach inside the internal section of the outlet goose-neck. I have access to both sides of the outlet however the blockage seems to be in the top part of the outlet that is beyond my reach.

    Any ideas about how to clear out the area marked in blue in the attached very rough sketch? Not to scale and most likely out of proportion and a poor representation of reality

    I would really prefer to avoid digging the whole thing out.

    Yes I am to blame for allowing it to become blocked!

    Kind Regards
    Lionel
    Attached Images Attached Images

  2. #2
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    May be worth while trying a mixture of Bi-Carb Soda and Vinegar or Bi-Carb and Boiling water. Might loosen things up a bit depending on how bad it is.
    Roger


  3. #3
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    I've heard the maintenance guy at work talking about special pressure washer attachments for clearing drains. Maybe something along those lines?

    Steve
    1985 County - Isuzu 4bd1 with HX30W turbo, LT95, 255/85-16 KM2's
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  4. #4
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    a drain snake will do it. even a cheap one may work if you can get a small hole to open up then stick a sludge capable pump into the bottom of the trap fill it up with water and degreaser (preferably hot if you can) and then turn the pump on so the water flow goes backwards.
    Dave

    "In a Landrover the other vehicle is your crumple zone."

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  5. #5
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    Mine has a small inspection plug above the "goose neck ". I just use a stick to loosen up the "crusty" deposits and away it goes.
    Mind you that is for the black water side of things.

  6. #6
    scanfor Guest
    I'd be worried that your drain field/ transpiration trenches are blocked with grease that got past the trap.
    Might be worth having a dig around where the trenches are just to see if they need to be de-sludged. Not a nice job.

  7. #7
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    Quote Originally Posted by scanfor View Post
    I'd be worried that your drain field/ transpiration trenches are blocked with grease that got past the trap.
    Might be worth having a dig around where the trenches are just to see if they need to be de-sludged. Not a nice job.
    I don't think that will be a problem, the grease trap is to prevent grease getting into the septic tank. The septic will work like a giant grease trap, stopping the grease getting into the trenches. A modern septic system won't even have a grease trap.

  8. #8
    scanfor Guest
    That depends on whether it goes to a septic tank. Ours goes straight out to the trenches and is completely separate from the black water circuit. If the trap hasn't been emptied for a while it may have allowed fats/grease through.

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