MBT’s Contribution to Climate Protection and Resource Conservation

Mechanical-biological waste treatment involves the production and separation of waste streams that are subsequently routed to materials or energy recovery. The associated contribution to resource conservation and climate protection and the energy efficiency attained by MBT processes are presented by the example of real-life facilities and compared with the results of other disposal methods. The result of the climate and energy balance strongly depends on the specific configuration and operating conditions of the facility. Despite major variations between the individual facilities, the study demonstrated clear advantages of the MBT facilities examined over alternative processes.The results of the balances provide a basis for identifying potential for the optimization and further development of MBT from both environmental performance and economic aspects.

While various publications are available on the climate balance of MBT processes, energy efficiency information on MBT facilities that covers all the building blocks of the process combination including MBT, materials / energy recovery and landfilling is so far not available in the literature.
The published CO2 balances for MBT processes partly show great variability. In the same way, they frequently show major variations from the results presented in this paper. These variations can for the greater part be explained by the inventory analysis underlying the calculations and, in part, also by the approaches selected for the efficiency assessment.
The results presented in this paper are based on the actual operating data (material and energy balance) of mechanical-biological treatment facilities and the downstream plants utilizing the material streams generated by the MBT facilities examined.
The calculation model is based on the method presented in VDI Guideline 3460, Part 2, which has been expanded and/or matched to the requirements of a process combination. The model uses a closed and plausible energy and mass balance to calculate the net energy yield which, after deduction of the energy consumption of the treatment process, describes the energy benefit of the process.
The environmental lifecycle assessment of the waste treatment process is made by the example of the climate balance via the magnitude of climate-relevant CO2 emission savings (expressed as CO2 equivalents per unit volume of waste treated). The CO2 equivalents are calculated with the aid of specific emission factors that describe the environmental impact in comparison with an equivalent system.
The system boundaries have been selected such that the computed performance indicators, i.e. energy efficiency and climate impact, allow both an assessment of the specific plant combination and a comparative assessment of alternative waste treatment processes.
In order to assess the magnitude of the values determined for the MBT processes, they are compared with literature data on identical processes and processes for the exclusive thermal treatment at municipal solid waste incinerators (MSWIs).



Copyright: © Arbeitsgemeinschaft Stoffspezifische Abfallbehandlung ASA e.V.
Quelle: 9. Recyclingtage 2012 (September 2012)
Seiten: 25
Preis inkl. MwSt.: € 12,50
Autor: Dr.-Ing. Ketel Ketelsen
Artikel weiterleiten In den Warenkorb legen Artikel kommentieren

Diese Fachartikel könnten Sie auch interessieren:

Mai-Fest für den Umweltschutz - IFAT 2008 in München
© Deutscher Fachverlag (DFV) (5/2008)
Internationaler und größer - die IFAT 2008. Zur weltweit bedeutendsten Messe für Wasser, Abwasser, Abfall und Recycling werden vom 5. bis 9. Mai in München mehr als 100.000 Besucher erwartet. Für sie gibt es mit rund 2.500 Ausstellern ein noch breiteres Angebot als vor drei Jahren.

Nachrüstung von MBA durch Vorschaltung von Vergärungsanlagen
© Witzenhausen-Institut für Abfall, Umwelt und Energie GmbH (4/2008)
Die Abfallwirtschaft steht vor großen Umwälzungen. Allein die Anstöße aus dem Klimaschutz sowie der Rohstoffverknappung wirken sich massiv auf die zukünftige Entwicklung der Branche aus – nicht nur in Deutschland, sondern weltweit. Bedarfssteigerungen und Ressourcenverknappung, insbesondere im Energiesektor, bewirken deutlich steigende Rohstoffpreise.

Mass balance of three municipal solid waste landfilling schemes
© IWWG International Waste Working Group (10/2007)
The results presented in this paper are issued from ELIA (Environmental Landfill Impact Assessment) research program investigations conducted by the CRPE (Veolia Environmental Services Research Centre) and supported by ADEME (the French Agency for Environment and Energy Management). Three waste landfilling schemes have been evaluated through the construction and follow-up of semi-industrial devices. Mechanical and Biological Treatment (MBT) before landfilling has been compared to the conventional landfill and the concept of bioreactor. 34 months of monitoring led to the establishment of different mass balances (carbon, nitrogen) as well as the estimation of the dry mass losses occurring during the treatment and their repartition between the liquid and gaseous phases

Entsorgung nicht verwertbarer Outputströme der MBA in die MVA
© IWARU, FH Münster (5/2005)
In wenigen Monaten beginnt ein neues Zeitalter in der Abfallwirtschaft. Die Diskussion wird beherrscht durch die Frage - reichen die Entsorgungskapazitäten? Aber auch andere Aspekte werden an Bedeutung gewinnen. Die LAGA [1] hat ermittelt, dass in 2005 eine gesicherte Behandlungskapazität bei MVA´n und MBA´n i.H.v. 22,6 Mio. t zur Verfügung stehen. Dies würde ausreichen, um Hausmüll und hausmüllähnliche Gewerbeabfälle zur Beseitigung i.H.v. 20,4 Mio. t zumindest rein rechnerisch aufzunehmen. Berücksichtigt man hingegen auch die Abfälle aus anderen Abfallbehandlungsanlagen (Sortier- und Aufbereitungsanlagen, Kompostwerke), nicht mehr ablagerungsfähige produktionsspezifische Abfälle und das weite Feld der Ersatzbrennstoffe, können an der Entsorgungssicherheit Zweifel aufkommen.

Use of a Fabric Filter for the Sorption – What Has to be Considered? – Experiences and Solutions –
© TK Verlag - Fachverlag für Kreislaufwirtschaft (9/2016)
In almost all flue gas cleaning systems installed at WtE-plants, the fabric filters are central components. A good example for this is the conditioned dry sorption process which is currently preferentially used in Europe. Within the filter not only the particles and the particulate heavy metals are separated from the gas flow, but also all reaction products resulting from the separation of gaseous pollutants such as HF, HCl, SOx, heavy metals and in this respect particularly Hg as well as PCDD/PCDF. In addition to this the fabric filter constitutes an excellent reaction chamber with high additive powder density in the filter cake.

Name:

Passwort:

 Angemeldet bleiben

Passwort vergessen?

Der ASK Wissenspool
 
Mit Klick auf die jüngste Ausgabe des Content -Partners zeigt sich das gesamte Angebot des Partners
 
Selbst Partner werden?
 
Dann interessiert Sie sicher das ASK win - win Prinzip:
 
ASK stellt kostenlos die Abwicklungs- und Marketingplattform - die Partner stellen den Content.
 
Umsätze werden im Verhältnis 30 zu 70 (70% für den Content Partner) geteilt.
 
Neu in ASK? Dann gleich registrieren und Vorteile nutzen...