B - Operations – Transporting – 05 – C
Patent
B - Operations, Transporting
05
C
B05C 19/06 (2006.01) C09D 7/00 (2006.01)
Patent
CA 2060134
C-1493 METHODS FOR REMOVING SOLIDS FROM SOLVENT-BASED/WATER-BASED PAINT SYSTEMS ABSTRACT OF THE DISCLOSURE Methods of treating circulating water containing over-sprayed, water-borne and solvent-based paints, such as in a paint spray booth operation, comprise adjusting the alkalinity of the paint spray booth water to between about 100 and 600 ppm, on a calcium carbonate basis, by adding an alkalinity source thereto, adding a melamine polymer to the water, contacting the over-sprayed, water- borne and solvent-borne paints with the alkalinity- adjusted paint spray booth water before or after addition of the melamine polymer, adding an effective amount of a flocculant to the paint spray booth water, and removing resulting sludge from the paint spray booth water.
Calgon Corporation
Goudreau Gage Dubuc
LandOfFree
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