vanchem performance chemicals

VANTAK WB SYSTEM

Case Study 2005-2007

New Waterborne Detack Technology Yields Significant Improvement

Challenge

A major automotive customer challenged Vanchem to procure a new detackification technology for waterborne paint since established solvent borne technology did not work on waterborne paint. Solvent borne detackification technology caused excessive foaming and did not remove solids from recirculating water thereby creating high levels of bacteria.

Solution

After considerable research and development, Vanchem developed the VANTAK WB SYSTEM, a technology that successfully cracked the waterborne paint emulsion from recirculating water. Vanchem’s new technology was simple, readily implemented into their detack circulation system and allowed the use of existing sludge removal equipment.

Results

Our customer used the VANTAK WB SYSTEM for a one-year trial. The pit water remained clear, floating sludge was skimmed, dewatered to 40% solids, and the small volume of sludge left on pit floor was easily vacuumed without anyone having to enter pit. Generated sludge was not tacky and did not harden as catalyzed solvent borne paint sludge can.

After the first year, our customer agreed to install plumbing on pit floor. This allowed continual removal of sludge. At the end of second year, pit water was clear with virtually no sludge on pit floor. Maintaining pit water conductivity under 10,000 micromhos/cm ensured chemical efficiency.

Benefits

1. Cheaper than traditional detack.
2. Use existing sludge removal equipment.
3. Eliminates need for annual pit sludge removal.
4. Produces sludge with 35-50% solids.
5. Sludge can be recycled.
6. Biological activity is reduced.
7. Simplicity of operation.
8. Works in a broad pH range.
9. Dewatering of sludge can be achieved using filter press, centrifuge, dewatering bag, or forced air drier.