Pro-Spray improves product with on-demand demineralised water 30 January 2013

Pro-Spray Automotive Finishes is reporting improved production efficiency and product consistency since adopting Elga Process Water's proposal for an on-site demineralisation plant on its latest environmentally-friendly refinishing paint.

The company, which is part of Veolia Water Solutions & Technologies, is now producing deionised water on demand, using a combination of reverse osmosis and ion exchange technologies.

It has found the approach not only more cost effective than buying IBCs (intermediate bulk containers) in bulk, but also better in terms of consistency of water, and hence repeatable product formulation.

In brief, mains water is now delivered into a break tank and then pumped to a MiniRO reverse osmosis plant that removes 95% of dissolved solids and 99% of organic contaminants and bacteria.

Permeate from the MiniRO is collected in a tank and pumped through a UV disinfection unit, a cartridge filter and a service deionisation cylinder to produce deionised water of better than 0.5µS/cm conductivity.

This is delivered to points of use on the manufacturing line via a ring main, with integrated meters ensuring continuous verification for quality control and audit purposes.

The plant is saving around 25p per litre of water, compared with the cost of buying IBCs, an outcome that will provide payback in less than two years.

Brian Tinham

Related Companies
Veolia Water Technologies

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