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.
Summary
Location
Kaiserslautern, Germany
WWTP details
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
Data and images were provided by Stadtentwässerung Kaiserslautern AöR. Stadtentwässerung Kaiserslautern AöR did the calculation with support from WVE GmbH Kaiserslautern.
