Implementation of a local heat grid at Buchenhofen WWTP

Kolish, G.


The transition from current energy practices to the sustainable use of energy is essential. Recovering thermal energy is one main key for a sustainable urban water cycle, as it is the energy source with the highest recovery potential. Meda and Cornel (2010), for example, estimate the energy content of wastewater to about 250 kWh/(PE*a) as thermal energy against about 150 kWh/(PE*a) as chemically-bound energy (COD). The advantages of recovering thermal energy from the urban water cycle are investigated in the project INNERS (INNovative Energy Recovery Strategies in the urban water cycle), supported by the European Community within the INTERREG IVB North West. The implementation of a local heat grid at Buchenhofen WWTP operated by Wupperverband in Germany is one of the demonstration projects on the recovery of thermal energy from the UWC investigated in INNERS.

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