Overview of Material and Energy Flows in German Wastewater Infrastructures

The transition to more sustainable energy systems also challenges the wastewater sector to improve energy balances of infrastructures. Besides energy efficiency, also reuse of resources from wastewater offers large potentials to improve energy balances. Finding starting points for improvement requires a holistic picture of the current situation of the energy balance. Here, we shortly present the findings of an earlier study by the authors: Extended Energy Balance of the Urban Water Chain (UWC) in Germany. This extended energy balance includes both: direct energy consumption and generation at the different stages of UWC, as well as an estimate of the internal energy potentials of flow streams, and the proportion which is currently reused resp. not reused. The internal energy potentials include the chemical energy of Carbon C, the grey energy of nutrients N and P and the thermal energy stored in wastewater. The system boundaries for analysis 'from source to environment� included:

- the extraction, treatment and distribution of drinking water,

- energy use for hot water preparation in households

- the transport and treatment of wastewater and the use of biogas from anaerobic digestion,

- the transport, processing and end use of stabilized sludge generated during wastewater treatment.

 

 

Hochlauf der Wasserstoffwirtschaft
© Lexxion Verlagsgesellschaft mbH (8/2024)
Überblick über und Diskussion der Maßnahmen zum beschleunigten Ausbau der Wasserstoffinfrastruktur in Deutschland

Die innerstaatliche Umsetzung des Pariser Klimaschutzübereinkommens - ein Rechtsvergleich
© Lexxion Verlagsgesellschaft mbH (8/2024)
Like all public international law treaties, the Paris Climate Accords rely on national law for their implementation. The success of the agreement therefore depends, to a large extent, on the stepstaken or not taken by national governments and legislators as well as on the instruments and mechanisms chosen for this task. Against this background, the present article compares different approaches to the implementation of the Paris Agreement, using court decisions as a means to assess their (legal) effectiveness.

Klimaschutzrecht und Erzeugung erneuerbarer Energien in der Schweiz
© Lexxion Verlagsgesellschaft mbH (8/2024)
Verschachtelte Gesetzgebung unter politischer Ungewissheit

 

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