The Valmet Low Solids Measurement (Valmet LS) is the first and only solution that can reliably and accurately measure suspended solids in centrate. Used after sludge dewatering, the Valmet LS helps operators select the right type and amount of polymer and optimize dewatering.
Measuring suspended solids in filtrate and centrate has been notoriously difficult. The low solids content in process water, that is also typically full of debris, phosphate build-up (struvite) and foaming, is hard to accurately and reliably measure.
The Valmet Low Solids Measurement overcomes all these challenges. Using advanced optics technology developed over decades by Valmet, the Valmet LS is a solution operators can really trust.
The Valmet LS can be connected to the solids treatment process to provide online measurements for rapid analysis. The measurement supports continuous sample flow by utilizing an integrated centrifugal pump.
When the sample passes through the measurement cell, high-quality LEDs produce six unique optical singles for precise measurement. The Valmet LS continuously measures both the entrained air index, which indicates polymer overdosing, and the suspended solids content from 0 to 5,000 mg/L. For measurements above 5,000 mg/L, please contact Valmet.
Samples are deaerated and screened before entering the measurement cell. Engineered for robustness, the measurement cell has extremely strong sapphire glass with optimum optical properties and high resilience to impurities.
Keeping the Valmet LS measurement system clean is ensured through an automated cleaning cycle. The cell and sample lines are backflushed, along with additional chemical cleaning, at configurable intervals. Automatic self-diagnostics and clean water calibration add an additional layer of assurance that the Valmet LS delivers accurate, reliable and consistently reproducible measurements.