Pro-Spray Automotive Finishes Ltd

Veolia's water system provides cost savings for paint manufacturer

Veolia's water system provides cost savings for paint manufacturer

The Client's Needs

Every bit as important as the paint pigment is the quality of the water used as the base, and Pro-Spray require bacteria-free, deionised water of conductivity less than 10μS/cm. In order to ensure water quality, Pro-Spray purchased deionised water in 1000 litre IBC containers at a cost of almost £300 per container. Due to the lead time from their supplier, they found it necessary to purchase IBCs in batches of six with the result that valuable storage space was occupied by deionised water.

In researching ways to ensure the consistency of their paint, Pro-Spray found that storing bulk quantities of demineralised water could result in contamination issues.

The Solution

Veolia Water Technologies proposed an on-site demineralisation plant to produce water of the specified quality as and when required, eliminating the need for storage and ensuring that this problem would never arise.

Veolia Water Technologies’s solution was for Pro-Spray to produce their deionised water on demand using a combination of reverse osmosis and ion exchange technologies. This solution would not only be more cost effective than 
buying in bulk IBC’s, but would ensure the quality of water could be guaranteed and product formulation could be repeated. It would also eliminate the need to order, handle and store IBC containers, improving health & safety onsite, and saving the company time.


The Veolia Water Technologies system has a smaller footprint than that of storing IBCs and, because deionised water is produced on demand, there are no issues with deterioration of quality during storage. A conductivity meter on the SDI cylinder continuously monitors treated water quality and a UV intensity meter ensures efficient disinfection to provide continuous verification for quality control and audit purposes.

Whilst Pro-Spray’s main objective was to ensure that their deionised water quality specification could be consistently met, they were pleased to find that the new plant is saving them approximately 25p per litre of water compared to the cost of buying IBCs and this will give a payback on the capital cost of the plant in less than two years. Benefits

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