By investing in a Valmet Sludge Dewatering Optimizer (Valmet SDO) and online solids measurement units, Lappeenrannan Lämpövoima’s Toikansuo wastewater treatment plant has been able to boost sludge dewatering efficiency and lower costs in further sludge treatment, among others.
When we found out that Valmet had a dewatering optimization solution with which it would be possible to lower sludge disposal costs, we chose Valmet to be our supplier. To my knowledge, Valmet is the only supplier that offers this kind of dewatering optimization application. We expect optimization to improve our dewatering process and make sludge quality more consistent.
Päivi Rissanen, Plant operator at Lappeenrannan Lämpövoima
Summary
Location
Lappeenranta, Finland
Customer challenge
There is no digestion tank or any intermediate treatment before the sludge dewatering. As sludge is fed directly into the dewatering unit, all process changes, winter or summer running modes, or disturbances have an impact on the sludge quality causing more variability.
Better sludge dewatering efficiency and lower costs in further sludge treatment. Dewatering unit performance is more stable than before with fewer disturbances. Online measurement data and Valmet SDO have enabled the plant to increase the amount of the sludge fed into the dewatering unit closer to its maximal capacity.
