The available footprint was limited and the NADCAP requirement for the rinse quality is stringent.
Puretech Environmental engineers designed a specific and efficient spray rinsing system coupled with an equally performant ion exchange recycling unit operating at 5m3/h. The resulting effluent is processed in a purposely designed batch reactor (10m3 capacity). In this batch reactor the complete physico-chemical process is carried out : Chromium reduction, precipitation, flocculation & settlement.
The discharged effluent achieves 100% compliance with the discharge limits : 1ppm on total chromium, 0.1ppm on hexavalent chromium. The quality of the final rinse on the chromic anodising line is kept below 1μS/cm and thanks to the unique overall water management system the volume of discharged effluent is kept below 2m3 per day.
"Puretech Environmental came up with an original yet simple and efficient integrated design. The quality of our product has been enhanced. We are so pleased with it that we have awarded them the contract to install similar system for our Midlands' plant"
