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Energy Efficiency in Mechanical Biological Treatment Plants

Due to the 30th Ordinance of the Federal Emission control ('30. BImSchV�) the exhaust air of MBT plants in Germany has to be collected and treated. This ordinance includes limit values for dust, carbon and nitrous oxide emissions from MBT plants. Especially the limit value for thecarbon freight, which is limited to 55 g/MgInputMBA, forces MBT operators to use exhaust air Treatment technologies with high energy consumption.

To comply with the limit values set out by the ordinance the exhaust air is treated mainly by a combination of a biofilter and a regenerative thermaloxidation unit (RTO). RTO units are primarity not designed for the exhaust air treatment of MBT plants, which exhibits very low levels of organic contaminants hampering the autothermal catalytic oxidation. Additional energy is resulting in an increased natural gas consumption. The application of RTO units leads to the unsatisfying situation, that nearly 65 % of the total energy consumption of the process is attributed to natural gas for the exhaust air Treatment.

Copyright:	© Lehrstuhl für Abfallverwertungstechnik und Abfallwirtschaft der Montanuniversität Leoben
Quelle:	Depotech 2014 (November 2014)
Seiten:	1
Preis:	€ 0,00
Autor:	Dipl.-Ing. Erdogan Coskun Dr. Alexander Feil Prof. Dr.-Ing. Thomas Pretz Dr.-Ing. Martin Reiser o. Prof. Dr.-Ing. Martin Kranert
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