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Removing Water-Based Paint Solids from Rinse Water

17 thoughts on “Removing Water-Based Paint Solids from Rinse Water”

    • Hi Lisa – Thanks for asking. This process really does remain the best and most effective approach and it has held up quite well over the years. So definitely feel free to rely on it. And if you have any other questions, just ask!

      Reply
  1. I’ve called most every garden center in California that I can drive to, they say that they can’t carry hydrogenated lime or aluminum sulfate because FDA forbids it. What other options will work. I don’t want to ruin my pipes or septic. Thank you!

    Reply
    • Hello Susan,
      great that you are treating your painting water as well! Yes, this can be done in larger batches and you would simply have to adjust the amounts of lime powder and aluminum sulfate accordingly.

      Best,
      mirjam

      Reply
  2. The water that is filtered into the pail seems rather murky. Can it be refiltered?
    I couldn’t find the larger filters where I live, so I used smaller filters arranged to cover the funnel as much as possible.

    The other solution I had was to cut a hole in the lid of the pail to set the funnel in. It works quite well and I don’t need a huge funnel. I’m using a 9 inch funnel.

    Reply
    • Hello Sharon,
      Yes, you can attempt to refilter. You could use the chemicals again or just try to pass through the coffee filter and see if you catch more solids. It is possible since you are not using a single filter that some material is passing around the smaller filters. Larger filters are available online from retailers such as Amazon.
      Best,
      Christian

      Reply
    • Hello Nancy,
      It’s possible to mix the material and use it over time, but the lime will settle and require very vigorous remixing so we do not recommend it. Also, these would not be good to have around in non-child-proof containers if this is a family household.
      Best,
      Christian

      Reply

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