Valmet Low Solids Measurement - Valmet LS
Valmet Low Solids Measurement (Valmet LS) provides great savings in costs to wastewater treatment plants, by optimizing their polymer dosage and minimizing the solids content in the reject water. Valmet LS is the first and only meter which can measure centrate suspended solids reliably, and is used specially with the sludge dewatering machines. Operators can easily select the right type of polymer while continuously following its quality.
Valmet LS device can be connected online to the process and it is possible to measure continuous sample flow through the system by utilizing an integrated centrifugal pump.
The system has two light sources LED and Laser. When sample passes through the measurement cell, the absorption, scattering and depolarization signals from both of the light sources are measured.
Valmet LS continuously measures both the entrained air index, which indicates overdosing of polymer, and the suspended solids content within the range of zero to 5,000 mg/l. If bigger, please contact Valmet personnel. The Valmet LS measurement system deaerates, filters and measures the process solids along with possessing self-cleaning capabilities to keep the measurement optics clean. The measurement cell has an extremely strong sapphire glass with high optical properties. The cell and sample lines are automatically cleaned at given intervals.
- Optimization of the capacity of the wastewater plant
- Polymer savings
- Optimization of the dewatering machine
- Reduced laboratory/sampling work
- Faster polymer test runs and selection
Solids Measurements For Better Wastewater Control – Click here to download Valmet Wastewater Guide
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Customer success stories
Reliable solids measurement in the centrate
The waste water treatment plant in Steinhäule on the Danube river treats around 40 million m3 of wastewater per year. Sludge dewatering has been considerably upgraded with the installation of a highly accurate instrument for the measurement of solids from Valmet.
Valmet goes underground to help treat wastewater
The Kakolanmäki wastewater treatment plant has been operating in the southern Finnish city of Turku since the beginning of 2009. Since the plant is built underground it has a more constant and higher temperature than surface facilities, a distinct advantage for treatment conditions.
Reliable Suspended Solids Centrate Measurement
The wastewater treatment plant in Wansdorf, located in Western Berlin, is currently investing approximately 1.7 million Euros in a new plant for advanced water treatment. The Valmet LS ensures that the centrate solids do not build up and affect plant loadings upon start-up.
Valmet wastewater solutions save energy and chemicals
Tampere Water recently installed several Valmet total solids measurement devices and a sludge dewatering control package at its Viinikanlahti wastewater treatment plant in Tampere, Finland.
On-line measurement with laboratory accuracy
The Anjalankoski Mill area is home to two of Stora Enso's production units, the Anjala Paper Mill, as well as the Inkeroinen Board Mill. Cooperative efforts between the mills cover raw materials, energy and power generation, as well as waste water treatment and resultant sludge drying and firing.
Improving waste water treatment plant operation
Recently a global producer of polymer emulsion chemicals ordered a Valmet LS measurement to enhance the operation of their sludge handling at the waste water treatment plant. Reliable measurement systems are required to keep the solid content to the municipal waste water plant within approved limits.
Continued investment in the best technology
The Heinola Fluting Mill is part of the Stora Enso Renewable Packaging business unit. Continuous investment in best available technologies has been a key factor in maintaining the mill’s reputation as one of the world’s best and most productive semi-chemical fluting manufacturers.