Regenerative Energie
Sequential anaerobic digestion - aerobic composting processes are crucial for low carbon footprint utilization of sewage sludge. Treatment plants with sludge drying may benefit from such methods, provided that the two degradation processes are harmonized. A laboratory-scale trial was executed focusing on the energy relations of the two processes.
Data was analyzed with an adjusted composting model of Haug (1993). The outcome implies that drying depends primarily on the initial total solids (TS) content of the compostable sludge and only to a smaller degree on the anaerobic conversion. Considering a 25% anaerobic degradation and scenarios of 5 and 20 °C external temperatures, the minimum required TS content in the starting substrates was 30 and 25 % TS, respectively. Above these values, anaerobic conversion did not limit the aerobic thermophilic stage. The amendment and volumetric requirements for composting were also quantified. The described methodology supports economic designing of biological sewage sludge treatment.
| Copyright: | © European Compost Network ECN e.V. |
| Quelle: | Orbit 2014 (Juni 2014) |
| Seiten: | 0 |
| Preis: | € 0,00 |
| Autor: | Beatrix Rózsáné Szűcs M. Simon Gábor Szántó Dr. György Füleky |
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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