Monitoring of biofilters in the context of Czech legislationK. Vondrakova , M. Sir , J. Sedlacek
Since 2003 methane biooxidation for the municipal solid waste (MSW) landfills has come to the interests of researchers, biofilters started to be significantly installed.
Wasteconsult international Case study of an MBT producing SRF for cement kiln cocombustion, coupled with a bioreactor landfill for process residuesMario Grosso, L. Rigamonti, Dr. Sergio Scotti
The research focuses on the performances of a traditional single stream MBT for SRF production suitable for co-combustion in a cement kiln. Bio-drying of the residual waste is followed by mechanical refining in order to fulfil the quality requirements by the cement kilns. The residues arising from the mechanical refining section are landfilled in a nearby bioreactor-landfill, where landfill gas is collected for electric energy recovery. A detailed mass balance of the system is presented, followed by a Life Cycle Assessment.
Wasteconsult international Landfill mining option: MBT role and landfill potential dangerDr.-Ing. Dipl. Elena Cristina Rada, Dr.-Ing. Dipl. Marco Ragazzi, Prof. Dr.-Ing. Vincenzo Torretta, Ing. Giorgia Passamani
The use of landfills for the disposal of municipal solid waste (MSW) has many technical and regulatory limits. An interesting solution is to recover the bales that have been previously stored in a landfill. After specific mechanical biological treatments (MBT), the contents of the bales can be used to produce a solid recovered fuel (SRF) that can be used for energy purposes. The possibility of producing SRF fuels from a landfill in northern Italy has been studied and is presented in this paper. The MSW extracted from the landfill, the bio-dried material produced by the waste hypothetically treated in a plant for bio-drying, and the SRF obtained after the extraction of inert materials, metals and glass from the bio-dried material have been characterized. Assessed the waste nature, the potential environmental impact of dioxin release from a possible landfill fire has been analysed, applying the Austal2000 model system.
Wasteconsult international Integrated Waste Management System including Waste-to- Biofuels in Western CanadaDr. Christian Felske
The City of Edmonton provides integrated and sustainable waste management Services for residents and for the commercial sector. These services are both economical and mindful of the environment. Up to 60 per cent of residential waste is currently diverted from landfills at the Edmonton Waste Management Centre. This is mainly achieved through recycling and composting processes. Edmonton’s goal is to further raise that diversion rate to 90 per cent. Two projects play a key role in achieving this goal: a High Solids Anaerobic Digestion Facility and the first of its kind Waste to Biofuel and Chemicals Facility. These two projects will be described in more detail in this paper.
Wasteconsult international Landfill mining in practice: Dismantling of the old dump Kössen / AustriaDipl.-Ing. Martin Steiner
This case study presents in its first part a hands-on assessment of the content of a former landfill which was operated between 1920 and 1985 and accepted all municipal waste streams generated in a predominantly rural environment with tourism as a main economic factor. The assessment was performed – according to the principle “let´s replace assumptions by knowledgeâ€ – prior to the complete removal of the landfill Content (volume about 50.000 m3).
The second part gives an overview on the excavation and separation works itself which have been triggered by flood events in summer 2013 (Kössen, a small town located on a river emptying into Chiemsee in Bavaria was the municipality mostly affected by this flood in Western Austria).
Wasteconsult international 3D-Geospatial Data using Unmanned Airborne VehiclesDr.-Ing. Werner Mayr
The use of aerial images for 3D-geospatial information extraction is a known and precise technology. This technology, called photogrammetry, finds application also in Monitoring tasks of landfill sites. One obtains 3D-geospatial information such as volumes, terrain models, profiles, or contours all of which describe the area in a particular way, either for planning or for documentation purposes. Typically, one associates the capturing of aerial images with use of manned aircraft equipped with large format – nowadays digital – aerial camera systems. As aircrafts serve either fixed wing airplanes or Rotary wing aircrafts.
Wasteconsult international MBT demonstration project in TunisiaThouraya Chantou, Ayman Elnaas, Dr.-Ing. Abdallah Nassour, Bernd Hasel, Dr.-Ing. Wolfgang Pfaff-Simoneit
Tunisian waste is rich in organic and hence fairly wet. This causes technical Problems and adverse environmental effects when landfilled. But next to the formation of leachate and landfill gas also operation problems were observed especially at pit landfills because of unsufficient drainage of the leachate which resulted in situations that the whole waste is soaked with leachate and hence the mechanical stability is reduced. The main objective of the pilot test was to prove that the PMB is a feasible solution for the conditions in Tunisia and an adequate option to overcome some of the Problems mentioned above.
Wasteconsult international MBT Ljubljana: In Slovenia arises one of the largest and most modern plants in EuropeDipl.-Ing. Gerhard Pilz
The new MBT in Slovenia’s capital gets ready to become one of the largest and most modern waste treatment plants in Europe. It will produce biogas, recover heat and power as well as SRF and other recyclable products while avoiding landfilling. The new facility is implemented into the existing waste management centre of Ljubljana.
Lehrstuhl für Abfallverwertungstechnik und Abfallwirtschaft der Montanuniversität Leoben Two Case Studies on Landfill Mining: Kössen (Austria), Bishkek (Kyrgyzstan)Dipl.-Ing. Martin Steiner, Marion Fuchs, Martin Rottler
The case study on Kössen describes a hands-on assessment of the content of a former landfill which was performed prior to fi nal excavation works according to the principle “let´s assume assumptions by knowledgeâ€. The case study on Bishkek describes mining techniques applied in many landfi lls in Central Asia in former, partly decomposed disposal zones from the “Sovjet Eraâ€, but gives also impressions on general landfi lling practices and standards in the region.
Lehrstuhl für Abfallverwertungstechnik und Abfallwirtschaft der Montanuniversität Leoben Utilization of Treated Solid Waste Combustion Residues in Reconstruction and Vertical Air Space Extension of LandfillsDipl.-Ing. Dr. mont. Renato Sarc, Univ. Prof. Dr.-Ing. Karl E. Lorber, Dipl.-Ing. Dr.mont MScTox Klaus Werner Wruss, Karl Reiselhuber
In this contribution, the utilization of processed MSWI – combustion residues (i.e. bottom ash & slags) for the reconstruction of landfi lls during vertical expansion of airspace is reported. It is shown, that from 250 kg/tonMSW bottom ash generated during combustion, 6 – 7 % FE-metals, 1 – 2 % NON-FE metals and over 90 % minerals (mainly a mixture of CaO, Al2O3, Fe2O3, and Silicates) can be recovered in a processing plant. Using the so called „Concrete Stabilized Perimeter Berm“ method, where parts of the mineral fraction are mixed with cement, sand and water to form concrete for slope construction during the vertical airspace expansion, slope steepening from 1(V): 3 (H) to 2(V) : 3 (H) with simultaneous increase of landfill height from 30 m-45m can be achieved, resulting in airspace gaining.
Lehrstuhl für Abfallverwertungstechnik und Abfallwirtschaft der Montanuniversität Leoben In-Depth Characterization of Residual Fines by Digital Image ProcessingDipl. Ing. Mattias Berwanger, David Rüßmann, Prof. Dr.-Ing. Thomas Pretz
During the processing of solid waste for the recovery of valuable materials certain residual fractions are inevitably created. As a rule, these cannot be processed at state-of-the-art solid waste processing technology for economic reasons and for quality restraints.
Lehrstuhl für Abfallverwertungstechnik und Abfallwirtschaft der Montanuniversität Leoben Primary Gravel Production at Industrial LocationsStefan Kreuzwieser, Stefan Prentner
The consortium ARGE GROUND UNIT produces CE-certified gravel and sand from contaminated excavated materials in a wet separation plant on the area of voestalpine Stahl GmbH. The products are used as aggregate for concrete and for unbound and hydraulically bound base layers. The treated materials come from various construction projects on the site of voestalpine in Linz. This area is industrially used since nearly 100 years. The material contains typical pollutions from steel production of former decades. Without treatment in the separation plant of ARGE GROUND UNIT, it would be necessary to carry nearly all excavations to a landfill.
Lehrstuhl für Abfallverwertungstechnik und Abfallwirtschaft der Montanuniversität Leoben Removal of H2S from Biogas with the Use of AshesMag. Peter Mostbauer, Dipl.-Ing. Alexander Knapp, H. Insam
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 mediumâ€ 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.
Lehrstuhl für Abfallverwertungstechnik und Abfallwirtschaft der Montanuniversität Leoben CHP-Units with Stirling Engines for Landfi ll Gas UtilizationDr.-Ing. Arnd Seyfert
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.
Lehrstuhl für Abfallverwertungstechnik und Abfallwirtschaft der Montanuniversität Leoben Security Risk of Landfill Gas - Hazard Potential and Defensive MeasuresDr. Roman Prantl, Klaus Schloffer
The present work “Security Risk of Landfill Gasâ€ 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.
Lehrstuhl für Abfallverwertungstechnik und Abfallwirtschaft der Montanuniversität Leoben Application of Unmanned Aerial Vehicle Technologies in Design and Operation of LandfillsJohannes Novak, MSc Daniel Söderlindh, DI Dr. Arne Michael Ragossnig, Michaela Ragossnig-Angst
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.
Lehrstuhl für Abfallverwertungstechnik und Abfallwirtschaft der Montanuniversität Leoben Water Balance of Layered Mineral Landfill CoverM.Sc. Steffen Beck-Broichsitter, Dr. Heiner Fleige, Prof. Dr. Rainer Horn
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.
Lehrstuhl für Abfallverwertungstechnik und Abfallwirtschaft der Montanuniversität Leoben Deformation Analysis of the Landfill “Rautenweg“ using 3D-Finite Element ModellingPeter-Andreas von Wolffersdorff, Karl Reiselhuber
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.
Lehrstuhl für Abfallverwertungstechnik und Abfallwirtschaft der Montanuniversität Leoben Aeration of the Landfill Pill; Effects on Groundwater ContaminationDr. Ing. Klemens Finsterwalder
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.
Lehrstuhl für Abfallverwertungstechnik und Abfallwirtschaft der Montanuniversität Leoben In-situ Aeration: Performance Control after 5 Years on a Municipal Solid Waste LandfillDipl.-Ing. Dr. Marion Huber-Humer, Marlies Hrad, Dipl.-Ing. Sabine Lenz
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.
Lehrstuhl für Abfallverwertungstechnik und Abfallwirtschaft der Montanuniversität Leoben Former Tannery Waste Disposal Site – Excavation of Intense Odour WasteHartwig Kraiger
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.
Lehrstuhl für Abfallverwertungstechnik und Abfallwirtschaft der Montanuniversität Leoben MBT-Landfill as Carbon Sink – Expected Carbon Content after AerationDipl.-Ing Erwin Binner, Alexandra Pukhnyuk, Dipl.-Ing. Dr. Marion Huber-Humer
Target of MBT (mechanical biological treatment of wastes) is to mineralise and to stabilise waste organic matter. This leads to a reduction of emissions after landfi lling the pretreated wastes. It is well known, that MBT-landfills can be seen as a carbon sink, but there is a deficit in knowledge about the time frame respectively which share of organic carbon will remain in the landfill over long period.
Lehrstuhl für Abfallverwertungstechnik und Abfallwirtschaft der Montanuniversität Leoben An Extensive Environmental Protection Program During the Bonfol Landfill RemediationDamien Kurc
The industrial waste landfill at Bonfol in the Canton of Jura, Switzerland, is a heritage of our past. The chemical industry of Basle, amongst others, dumped its production waste in a former clay pit during 15 years before the landfi ll was closed in 1976 with a clay cap. Today, the organizational and technical challenge consists in excavating nearly 175,000 tons of hazardous waste material under high safety and environmental protection measures.
Lehrstuhl für Abfallverwertungstechnik und Abfallwirtschaft der Montanuniversität Leoben Biological Stabilization of the Teuftal Landfill in SwitzerlandDr.-Ing. Marco Ritzkowski
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.
Lehrstuhl für Abfallverwertungstechnik und Abfallwirtschaft der Montanuniversität Leoben Relevant Emissions During Landfill Mining ProcessesProf. Dr.-Ing Gerhard Rettenberger
Because of landfill mining activities emissions will occur. They can cause considerable effects to the environment and the vicinity. The most important emission may be the odour, but also dust and noise can be relevant to the neighborhood.
Lehrstuhl für Abfallverwertungstechnik und Abfallwirtschaft der Montanuniversität Leoben RoadMap - Mapping in Case of Landfill MiningDr. Jörg Nispel, Prof. Dr. habil. Stefan A. Gäth
Raw materials such as steel and energy are becoming scarcer due to the steady growth of the world population and the resulting consumption change. Hence, it is to be expected that the Prices of primary and secondary raw materials will rise in future even more than present.
Lehrstuhl für Abfallverwertungstechnik und Abfallwirtschaft der Montanuniversität Leoben Landfill Mining – Case Study: Resource Potential of a Styrian Sanitary Landfill SiteDI Dr. Tanja Wolfsberger, Dr. Daniel Höllen, Dipl.-Ing. Dr. mont. Renato Sarc, Univ.-Prof. DI Dr. mont. Roland Pomberger, Ing. Andreas Zöscher
During the last years, noticeable changes in the availability of mineral raw materials (e.g. ores, coal) were observed due to an enormous raw material demand of developing countries (e.g. China). Subsequently, a sensible scarcity of raw materials, highly competitive markets and a significant aggravated accessibility to mineral resources have been noticed.