Valmet measures polymer concentrations for wastewater and paper/board applications

Feb. 21, 2024
PCM is the first optical, inline polymer measurement technology for municipal and industrial wastewater treatment

Valmet Oyj introduced Jan. 23 its Polymer Concentration Measurement (PCM) solution, which it reports is the first optical, inline polymer measurement technology for municipal and industrial wastewater treatment, as well as pulp and paper processes. PCM provides real-time, continuous polymer concentration data, which creates opportunities for process optimization such as more accurate polymer dosage, reduces polymer use, and allows faster reaction to process disturbances.

Knowing actual polymer levels lets facilities reduce polymer consumption with more accurate preparation and dosing. Steady polymer concentration in turn improves flocculation, clarification, dewatering and other key processes. Better performance saves energy and reduces sludge transport and incineration needs, furthering the positive environmental and social impacts of efficient wastewater treatment.

Similarly, in paper and board processes, chemicals, typically polymers, are added to improve retention of fine particles and fillers during web formation. Accurate information about polymer concentration helps optimize wet end retention and increase process efficiency.

Despite its compact probe design, PCM’s optics are reported to maximize measurement volume. With more optical channels to collect scattered and reflected light, the probe delivers six times more information compared to conventional solutions. 

To counter probe contamination common in wastewater applications, Valmet also developed an automatic flushing system to keep PCM’s probe clean and measurements stable. This integrated sensor probe flushing unit also includes support for a manual lab sampling valve.

About the Author

Jim Montague | Executive Editor

Jim Montague is executive editor of Control.