Former Tannery Waste Disposal Site – Excavation of Intense Odour Waste
© Lehrstuhl für Abfallverwertungstechnik und Abfallwirtschaft der Montanuniversität Leoben (11/2014)
The contaminated site ST19 (Gerbereideponie Schmidt), a former tannery waste disposal site, is situated in the southern part of the city of Weiz (Styria, Austria). The area is split up into two parts by a main road passing the landfill.

In-situ Aeration: Performance Control after 5 Years on a Municipal Solid Waste Landfill
© Lehrstuhl für Abfallverwertungstechnik und Abfallwirtschaft der Montanuniversität Leoben (11/2014)
By converting anaerobic landfills into an aerobic, biologically stabilised state through accelerating organic matter degradation, the time and effort necessary for post-closure management can be shortened. In-situ landfill aeration is thereby a promising cost-efficient treatment method to significantly reduce environmentally relevant and current emissions from existing municipial solid waste landfills (MSW), to stabilise the organic waste material, and to reduce the Emission potential.

Aeration of the Landfill Pill; Effects on Groundwater Contamination
© Lehrstuhl für Abfallverwertungstechnik und Abfallwirtschaft der Montanuniversität Leoben (11/2014)
At the former landfill Pill in Tyrol, Austria groundwater contamination was caused by high Ammonium loads of up to 20 mg/l. Biodegradable nitrogen was specified as the cause of groundwater pollution by ammonium. However, other substances were hardly noticeable. Ammonium is generated within the landfill body through anaerobic decomposition of organic matter.

Deformation Analysis of the Landfill “Rautenweg“ using 3D-Finite Element Modelling
© Lehrstuhl für Abfallverwertungstechnik und Abfallwirtschaft der Montanuniversität Leoben (11/2014)
The landfi ll Rautenweg is the largest landfill in Austria and operated by the city of Vienna. The landfi ll is sealed by so-called “Wiener Dichtwandkammersystem“ (Vienna Cutt-Off Chamber). The system comprises two parallel diaphragm walls embedded into the impermeable stratum by 25 m. Counterfort are placed between the two diaphragm walls in regular intervals.

Verification and Control of Geotextiles According to DVO and ÖN S 2082
© Lehrstuhl für Abfallverwertungstechnik und Abfallwirtschaft der Montanuniversität Leoben (11/2014)
The Austrian landfill regulation DVO 2008 and its attachments generally admit to use geosynthetics as an alternative to mineral components used as sealing or drainage elements. The requirements needed to proof equivalency are described for each landfi ll class separately. Paragraph 5 and 6 and attachment 3 of the DVO defi ne the appropriate minimum requirements or limit values respectively.

Water Balance of Layered Mineral Landfill Cover
© Lehrstuhl für Abfallverwertungstechnik und Abfallwirtschaft der Montanuniversität Leoben (11/2014)
According to the presented monitoring system, the functionality of the individual components of the temporary surface cover system in Rastorf (Schleswig-Holstein) can be permanently monitored and evaluated under in-situ conditions.

Application of Unmanned Aerial Vehicle Technologies in Design and Operation of Landfills
© Lehrstuhl für Abfallverwertungstechnik und Abfallwirtschaft der Montanuniversität Leoben (11/2014)
Design and construction as well as the managing of landfills rely on a variety of land surveying data as well as other geo-information. For the design phase the suitability of the specific site acc. to the criteria defined in the Austrian landfill ordinance, knowledge of the topography as well as the boundary conditions with regard of immission control for neighbours require utmost attention.

Security Risk of Landfill Gas - Hazard Potential and Defensive Measures
© Lehrstuhl für Abfallverwertungstechnik und Abfallwirtschaft der Montanuniversität Leoben (11/2014)
The present work “Security Risk of Landfill Gas” has the goal to analyze, identify and minimize risks and hazards resulting from the emergence of landfi ll gas through a comprehensive approach. The fact that accidents happen repeatedly in this area, shows the security policy defi cit and thus the relevance of this work.

CHP-Units with Stirling Engines for Landfi ll Gas Utilization
© Lehrstuhl für Abfallverwertungstechnik und Abfallwirtschaft der Montanuniversität Leoben (11/2014)
Stirling engines have been used for about 200 years. For example at the beginning of the 20-th century 250,000 stirling engines were used as mechanical drives for ventilators, water pumps and drives for small devices for example sawing machines. But there are some disadvantageous in comparison with the normal combustion engine (for example the smaller electrical efficiency, the lower rotational-speed and a worse power to-weight ratio) so that the stirling engine lost this competition and nearly disappeared from the market.

Removal of H2S from Biogas with the Use of Ashes
© Lehrstuhl für Abfallverwertungstechnik und Abfallwirtschaft der Montanuniversität Leoben (11/2014)
In 2007, the Institute of Waste Management, Vienna, proposed a rather simple static system for removal of CO2 and H2S from biogas or landfill gas (LFG). Aged MSWI bottom ash was used as a “filter medium” at that time (BABIU process). The publications available today about ash-based upgrading of biogas concentrate on CO2 removal, CH4 enrichment and ecological benefits of the process. Less attention has been paid to reactions of H2S with ash constituents.

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