Research Article
Energy Integration in Wastewater Treatment Plants by Anaerobic Digestion of Urban Waste: A Process Design and Simulation Study
Table 3
Daily plant-wide energy balance of WWTP using AD and codigestion of sewage sludge.
| Aspect | Units | Scenario 1 | Scenario 2 | Scenario 3 |
| WWTP EE consumption | kWh | −1,193 | −1,223 | −1,325 | EE production (by CHP) | kWh | +522 | +632 | +1,395 | AD HW consumption | kWh | −253 | −253 | −397 | HW production (by CHP) | kWh | +474 | +481 | +1,268 | TH steam consumption | kWh | 0 | −267 | 0 | Steam production (by CHP) | kWh | +396 | +574 | +1,061 | EE self-sufficiency | % | 44 | 52 | 105 | Thermal self-sufficiency | % | 344 | 203 | 587 |
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