Printech Archives, October 1996: Re: Discharge of Rotogravure Water-Based Inks

Re: Discharge of Rotogravure Water-Based Inks

Bill Bilkovich (
Fri, 18 Oct 1996 13:05:55 -0400 (EDT)

Has anyone tried using a Paint Pig or similar small, inexpensive
centrifuge on this type of waste stream. I assume you have already
looked at squeege recovery of ink from pans to minimize ink loss (ink
being the most valuable commodity in this waste). I would try to avoid
putting another chemical down the sewer (the dispersant) especially
considering the potential endo-toxicity of many detergents and dispersants.

Bill Bilkovich

On Fri, 18 Oct 1996, Marvin Fleischman, Dept. of Chemical Engineering, Univers wrote:

> A rotogravure printer using water based ink claims that he cannot
> discharge the press washwater to the POTW because the ink clogs up in
> the pipes. Is anybody familiar with this phenomenon? If this can indeed
> happen, is there a dispersant that could be added to the wash water to
> prevent coagulation or aggglomeration of the ink solids in the waste
> water.



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