Comparison of MBT plants with and without upstream Anaerobic Digestion (AD) in terms of moisture Management and achievement of landfill disposal criteria
© Wasteconsult international (6/2015)
In waste industry the trend has developed to treat municipal solid waste (MSW) within an anaerobic digestion process. For this purpose MBT plants with an upstream AD plant were built. In the context of plant monitoring and trials one MBT with AD and one MBT without AD were examined and compared to determine the impact of the AD process. For this, the plant operation, especially the moisture management, the compliance of the landfill criteria and also the economic efficiency of the MBT were investigated.

MBT demonstration project in Tunisia
© Wasteconsult international (5/2015)
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.

MBT Ljubljana: In Slovenia arises one of the largest and most modern plants in Europe
© Wasteconsult international (5/2015)
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.

3D-Geospatial Data using Unmanned Airborne Vehicles
© Wasteconsult international (5/2015)
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.

Landfill mining in practice: Dismantling of the old dump Kössen / Austria
© Wasteconsult international (5/2015)
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 knowledge” – 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).

Integrated Waste Management System including Waste-to- Biofuels in Western Canada
© Wasteconsult international (5/2015)
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.

Landfill mining option: MBT role and landfill potential danger
© Wasteconsult international (5/2015)
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.

Case study of an MBT producing SRF for cement kiln cocombustion, coupled with a bioreactor landfill for process residues
© Wasteconsult international (5/2015)
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.

Landfill Mining – Case Study: Resource Potential of a Styrian Sanitary Landfill Site
© Lehrstuhl für Abfallverwertungstechnik und Abfallwirtschaft der Montanuniversität Leoben (11/2014)
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.

RoadMap - Mapping in Case of Landfill Mining
© Lehrstuhl für Abfallverwertungstechnik und Abfallwirtschaft der Montanuniversität Leoben (11/2014)
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.

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