Emerson Improves Chlorine Monitoring At DOW
DOW Benelux is using Emerson Process Management 's total chlorine analysers to improve the monitoring and control of chlorine in cooling water prior to its return to the sea. The greater accuracy and speed of the new system enables easier compliance with environmental regulations. Maintenance costs have also been reduced as the amperometric sensor requires less checking and cleaning than the previously installed sensor. The DOW Terneuzen site has 23 plants producing plastics and chemicals. The site is located on the southern shore of the Westerschelde estuary, from which it extracts sea water for cooling. To control the microbiological activity in the sea water - preventing blockages and fouling - minimal amounts of chlorine are dosed. The concentration of the chlorine must be precisely monitored and controlled before the water is returned to the estuary, to ensure compliance with environmental legislation. Emerson Process Management's Rosemount Analytical Model TCL sample-cond...