Ecobalance of Regenerative Thermal Oxidation regarding the avoidance of Greenhouse Gas Emissions

To assure compliance with valid environmental protection legislation in Germany, it is necessary to treat exhaust air from mechanical-biological treatment plants (MBA) by regenerative-thermal oxidation (RTO).

Elimination of organic components in exhaust air by regenerative-thermal oxidation is highly efficient on the one hand, but on the other hand RTO-plants have a high energy consumption.

Based on experience with several installations we examined if there is an effective contribution to climate protection by the use of RTO. The study came to the conclusion that the use of RTO to clean exhaust air with a low concentration of VOC (volatile organic compounds) from MBA is counterproductive, since more greenhouse gases are generated by running the RTO-plant than are avoided by not cleaning the exhaust air. Only on high concentration of VOC in the exhaust air there is a positive contribution to avoid greenhouse gases. In between there is a grey area, that depends on current specific and technical circumstances like composition of the pollutants of the exhaust air and energy-efficiency of the RTO-plant.



Copyright: © Wasteconsult International
Quelle: MBT 2007 (Mai 2007)
Seiten: 13
Preis inkl. MwSt.: € 6,50
Autor: Dr.-Ing. Joachim Dach

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