Table 3: Daily plant-wide energy balance of WWTP using AD and codigestion of sewage sludge.

AspectUnitsScenario 1Scenario 2Scenario 3

WWTP EE consumptionkWh−1,193−1,223−1,325
EE production (by CHP)kWh+522+632+1,395
AD HW consumptionkWh−253−253−397
HW production (by CHP)kWh+474+481+1,268
TH steam consumptionkWh0−2670
Steam production (by CHP)kWh+396+574+1,061
EE self-sufficiency%4452105
Thermal self-sufficiency%344203587