Method of cleaning waste water and recovery of contaminants ther

Details Method of cleaning waste water and recovery of contaminants ther Method of cleaning waste water and recovery of contaminants ther

1993-04-01

1995-10-03

Spear, Frank

Liquid purification or separation

Processes

Making an insoluble substance or accreting suspended...

210743, B01D 1200

Patent

active

054549566

ABSTRACT:
A method of cleaning waste water and removing contaminants therefrom with respect to compositions exhibiting water solubility behavior which is pH dependent. The method includes the preliminary step of applying the composition at a pH at which the composition is water insoluble, then removing excess composition from application equipment with a wash solution having a pH at which the composition is water soluble or washable, changing the pH of the wash solution to a pH at which the composition is water insoluble to thereby precipitate the composition and removing the composition by filtration or other separation techniques. The invention also relates to a shop towel clean up method.

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The Printing Ink Manual, Fourth Edition (1988) edited by R. H. Leach and published by Van Nostrand Reinhold.

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