Proceedings

Abstract The dream of energy self-sufficient WWTPs is now becoming a reality through the optimisation of available technologies reducing energy consumption and maximising energy generation. Implementation of the deammonification process is an important opportunity for energy savings at a WWTP, requiring significantly less aeration than conventional nitrification/denitrification. Sludge is the main energy source which is available on a municipal waste water treatment plant. Energy recovery measures are therefore basically related to sludge treatment and sludge treatment technologies. Lysotherm® is the thermal hydrolysis system developed by the SH+E Group. The process leads not only to higher gas yields during digestion, but also the more efficient dehydration of sludge. Recovery of phosphate and nitrogen in a treatment plant with biological phosphate removal is also possible if a suitable process is used. The sludge can be further utilised for energy recovery through incineration or pyrolysis.

Keywords:  Energy autonomy, sludge treatment, deammonification,