The on-site make-up demineralisation plant had been installed in 1993. It was limited in output to 10m3/h and operated for about eight hours between regenerations. “The main issue with the old plant was the four hour regeneration time”, says VES Operations Manager, Graham Duff.
Veolia water Technologies’s solution was a two-stream Rapide Strata+ 18m3/h packaged deioniser system together with conductivity, pH and silica monitoring, PLC controller and HMI. The two streams operate as duty and standby but, when demand is high, both can run together to deliver 36m3/h.