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Editor in Chief: RAFFAELLO COSSU

INCREASING THE BASELOAD CAPACITY OF BIOWASTE FERMENTATION PLANTS THROUGH OPTIMISED SUBSTRATE MANAGEMENT

  • Jan Sprafke - Faculty of Agricultural and Environmental Sciences, Department Waste and Resource Management, University of Rostock, Germany
  • Nils Engler - Faculty of Agricultural and Environmental Sciences, Department Waste and Resource Management, University of Rostock, Germany
  • Qahtan Thabit - Faculty of Agricultural and Environmental Sciences, Department Waste and Resource Management, University of Rostock, Germany
  • Michael Nelles - Faculty of Agricultural and Environmental Sciences, Department Waste and Resource Management, University of Rostock, Germany - Deutsches Biomasseforschungszentrum gGmbH, Germany
  • Andrea Schuech - Faculty of Agricultural and Environmental Sciences, Department Waste and Resource Management, University of Rostock, Germany

DOI 10.31025/2611-4135/2020.13905

Released under CC BY-NC-ND

Copyright: © 2019 CISA Publisher

Editorial History

  • Received: 15 Jul 2019
  • Revised: 02 Dec 2019
  • Accepted: 18 Dec 2019
  • Available online: 11 Feb 2020

Abstract

This paper presents a survey to determine the influence of impurities and green waste on anaerobic biowaste treatment, comparing the current common biowaste management system with a proposed future system. The results imply that it is possible to increase the specific biogas yield and the baseload capacity by means of an adapted biowaste management system. To analyse a possible correlation between biogas yield and biowaste composition from urban or rural areas the quality and quantity of biowaste was evaluated in a long-term research programme. August was the month with the maximum percentage of 69% green waste in biowaste, compared to February with a minimum proportion of 14%. The specific biogas yield of biowaste is in the range of 91 to 160 m³/tOS. The evaluation showed that, as expected, seasonal fluctuations in weather affected the proportion of garden and park waste (green waste) as well as impurities. Moreover, the proportion of green waste and impurities affects the substrate quality and degradability of biowaste. The investigated biowaste fermentation plant is not able to generate sufficient baseload for the reasons described above. Other reasons for this limitation include maintenance work, plant operation in part-load range and plant capacity limitations concerning the CHP module, digester capacity and pipes for gas transportation. The best ratio between organic fraction and impurities is obtained from biowaste from rural areas, while gas yields from urban areas are more constant and less volatile. Based on these findings, the increasing of the baseload capacity of waste fermentation plants can be achieved by: Optimisation of process flows (substrate management, preparation, post-treatment); Use of co-substrates in compliance with legal requirements; Determination and consideration of key figures.

Keywords


References

ATV-DVWK (2003). ERGÄNZUNGSBLATT Merkblatt ATV-DVWK-M 372: Technische Rahmenbedingungen für die Vergärung von Abfällen. Hennef: Ges. zur Förderung der Abwassertechnik e.V. (Translation: Technical framework conditions for the fermentation of wastes)

Bundesamt für Justiz (1993). TA Siedlungsabfall: Technische Anleitung zur Verwertung, Behandlung und sonstigen Entsorgung von Siedlungsabfällen (Translation: Technical directive on the recovery, treatment and other disposal of municipal waste) (Dritte Allgemeine Verwaltungsvorschrift zum Abfallgesetz) vom 14. Mai 1993 (BAnz. Nr. 99a vom 29.05.1993)

Bundesamt für Justiz (1998). Verordnung über die Verwertung von Bioabfällen auf landwirtschaftlich, forstwirtschaftlich und gärtnerisch genutzten Böden: Bioabfallverordnung - BioAbfV. (Translation: Ordinance on the Recovery of Bio-Waste on Land used for Agricultural, Silvicultural and Horticultural Purposes (Bio-waste Ordinance – BioAbfV).Retrieved from https://www.gesetze-im-internet.de/bioabfv/BioAbfV.pdf (accessed 28.05.2019)

Bundesamt für Justiz (2012). Gesetz zur Förderung der Kreislaufwirtschaft und Sicherung der umweltverträglichen Bewirtschaftung von Abfällen: Kreislaufwirtschaftsgesetz - KrWG. (Translation: Act to Promote Circular Economy and Safeguard the Environmentally Compatible Management of Waste: Closed Cycle Management Act).Retrieved from https://www.gesetze-im-internet.de/krwg/KrWG.pdf (accessed 28.05.2019)

Bundesamt für Justiz (2014). Gesetz für den Ausbau erneuerbarer Energien (Erneuerbare-Energien-Gesetz - EEG 2017): EEG 2017. (Translation: Act for the development of renewable energies (Renewable Energy Sources Act - EEG 2017)). Retrieved from https://www.gesetze-im-internet.de/eeg_2014/EEG_2017.pdf (accessed 28.05. 2019)

Europäisches Parlament und Rat (2008). Richtlinie 2008/98/EG des europäischen Parlamente und des Rates: vom 19. November 2008 über Abfälle und zur Aufhebung bestimmter Richtlinien (Text von Bedeutung für den EWR) (ABl. L 312 vom 22.11.2008, S. 3). (Translation: Directive 2008/98/EC of the European Parliament and of the Council of 19 November 2008 on waste and repealing certain Directives (Text with EEA relevance)). Retrieved from https://eur-lex.europa.eu/legal-content/DE/ALL/?uri=CELEX%3A32008L0098 (accessed 28.05.2019)

Henssen, D. (2009). Einführung und Optimierung der getrennten Sammlung zur Nutzbarmachung von Bioabfällen. (Translation: Introduction and optimisation of separate collection for the utilisation of biowaste) Retrieved from https://www.vhe.de/fileadmin/vhe/pdfs/Publikationen/Veroeffentlichungen/Bioabfall_Handbuch_VHE.pdf (accessed 28.05.2019)

Fricke, K., Heußner, C., Hüttner, A., Turk, T., Bauer, W., & Bidlingmaier, W. (2013). Vergärung von Biound Grünabfällen: Teil 1: Ausbaupotenzial bei der Vergärung von Bio- und Grünabfällen (Translation: Anaerobic digestion of biowaste Part 1: Potential for expansion in the fermentation of biowaste) Müll und Abfall. (12), 628–635

Kranert, M. (Ed.) (2010). Studium. Einführung in die Abfallwirtschaft: Mit 131 Tabellen [mit Online-Service] (Translation: Introduction to waste management) (4., vollst. aktualisierte und erw. Aufl.). Wiesbaden: Vieweg + Teubner. Statistisches Bundesamt (2019). (Translation: Federal Statistical Office) Abfallentsorgung - Fachserie 19 Reihe 1 - 2016. Retrieved from https://www.destatis.de/DE/Themen/Gesellschaft-Umwelt/Umwelt/Abfallwirtschaft/Publikationen/Downloads-Abfallwirtschaft/abfallentsorgung-2190100167004.pdf?__blob=publicationFile&v=4 (accessed 28.05.2019)

VDI (2016). Vergärung organischer Stoffe: Substratcharakterisierung, Probenahme, Stoffdatenerhebung, Gärversuche (Translation: Fermentation of organic materials: substrate characterisation, sampling, collection of material data, fermentation experiments) (Ausg. deutsch/englisch). VDI-Handbuch Technik Biomasse/Boden: VDI 4630. Berlin: Beuth Verlag GmbH

Weaver, K. F. (2018). An introduction to statistical analysis in research: With applications in the biological and life sciences. Hoboken NJ: Wiley


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