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Customer case:

Polymer dosing control & mass balance calculation, HSY Viikinmäki

Wastewater treatment plant in Viikinmäki, Finland was designed with the best available technology to treat all the wastewater from the greater Helsinki area, which is now home to over 800 000 residents. The centralized plant, which processes an average of 260 000 cubic metres per day

Now that total solids measurements are proven, the plans to implement mass balance calculation and control will continue. Valmet TS meters are one of the most accurate measurements we have, and a real industrial-quality measurement”
Tommy Fred, HSY
Summary
Location Viikinmäki, Finland
Customer challenge With an eye on improving treatment effectiveness through accurate sludge mass flow calculations, the plant has invested in 4 Valmet TS total solids measurement transmitters. These measurements are installed on the inlets to four sludge centrifuges.
Solution An accurate and reliable Valmet TS measurements give the plant the capability to accurately control polymer dosage based on mass flow rate (rather than the volumetric rate) of the incoming sludge and to optimize the effectiveness and costs of sludge dewatering.
Results

 “Now that total solids measurements are proven, the plans to implement mass balance calculation and control will continue” 

”Valmet TS meters are one of the most accurate measurements we have, and a real industrial-quality measurement”

Tommy Tred, HSY