Biological Stabilization of the Teuftal Landfill in Switzerland

The Teuftal landfill, located in the canton Bern, is considered the largest sanitary landfi ll in Switzerland. Since 40 years both, municipal solid waste (MSW), construction and demolition waste, bottom ashes, flue gas cleaning residues as well as industrial waste are disposed of in different landfill sections. Untreated MSW of relatively high organic content has been landfilled in particular between 1973 and 2000 on an area of approximately 12 hectare, subdivided into 3 sectors.

This area is considered as a bioreactor landfill. Since 2000, landfilling of organic waste is prohibited in Switzerland. Therefore, the landfill section receives only inorganic residues since that time. Since 1982 landfill gas is collected and utilized, at first for heating the operational buildings. In1989 four gas engines (466 kW each) have been installed for electrical energy production (electricalefficiency: 32 %). These engines where capable to utilize up to 1,300 m³ LFG per hour. Then, between 1993 and 1995, the LFG utilization plant was further enhanced up to 6 gas engines of a total capacity of 2.78 MWel. In conjunction with decreasing amounts of LFG from 1996 onwards
the number of gas engines has been gradually reduced to only one engine running in 2005.



Copyright: © Lehrstuhl für Abfallverwertungstechnik und Abfallwirtschaft der Montanuniversität Leoben
Quelle: Depotech 2014 (November 2014)
Seiten: 1
Preis: € 0,00
Autor: Dr.-Ing. Marco Ritzkowski
 
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