Process monitoring – An easy way to save costs
Valmet Total Solids Measurement (Valmet TS) helps WWTP Kaiserslautern, Germany, to save approximately 44 000€ in heating costs and increase its solid content in the digester by around 1% within one year. A controlled primary sludge removal ensures the process stability in the digestion and thus achieves savings due to longer residence times that means higher gas amount and higher gas quality. By switching off the primary sludge removal step in a controlled manner, significantly less water should enter the digestion process.
Approx. 17 million m³/a of wastewater to treat
Extension size 240 000 PE
Connected approx. 180 000 PE
Digested sludge development – approx. 9800 m³/a Agriculture: thermal 50:50
|Solution||Valmet Total Solids Measurement (Valmet TS)|
|Keywords||Valmet TS, Wastewater, Automation, Europe, Germany|
Red. Wärmebedarf +SF
|Energy content of digester gas||
Add. Heat CHP Nov.-April
|Electricity cost savings||
24 400 €
Heating oil equivalent
|(Electricity purchase price-operating costs CHP)||Heat cost savings||43 900 €|
|Values rounded(lower heating oil purchase - CHP remuneration)|
Data and images were provided by Stadtentwässerung Kaiserslautern AöR.
Stadtentwässerung Kaiserslautern AöR did the calculation with support from WVE GmbH Kaiserslautern.