New Sampling Technique for Coarse Waste Materials from Bales

Environmental analysis has to deal with the possible sources of error. It is known that the process of sampling is the major source of error (up to 90 % of the total error). The sampling error is scarcely considered, while the insignificant analysis error is included with up to three decimals. However, there are not yet any effective methods to reduce the sampling error, mainly because of the inhomogeneous properties of waste.

The aim of the project was to improve the sampling process with the same or an even higher accuracy of the analysis results.

The project targets a new technique to facilitate non-destructive sampling in waste bales. The current state-of-the-art sampling implements breaking up the bale, followed by tapering the samples. However this technique is time-consuming. Improving the sampling process should lead to higher accuracy of the results, since the process of sampling is the major source of error.

Five sampling methods were tested, including the state-of-the-art method, sampling with a chainsaw and different drillers of which the gained drilling cuttings are used as the sample. The most effective tool to sample a proper increment turned out to be a concrete core drill with a customised crown. Depending on the size of the bales, up to 20 increments can be obtained without compromising the stability of the bale. Hence, a non-destructive sampling technique is now achievable.



Copyright: © Lehrstuhl für Abfallverwertungstechnik und Abfallwirtschaft der Montanuniversität Leoben
Source: Recy & Depotech 2016 (November 2016)
Pages: 4
Price: € 2,00
Autor: Mag. Dr. Martin Wellacher
T. Berto

Send Article Add to shopping cart Comment article


These articles might be interesting:

Steel Slag Asphalt: Preventing the Waste of a High Quality Resource
© Lehrstuhl für Abfallverwertungstechnik und Abfallwirtschaft der Montanuniversität Leoben (11/2014)
Steel slag is the inevitable by-product of the production of steel, from both the conversion of iron to steel and the recycling of steel scrap. Historically, this material has been sent to a landfi ll as waste, but over the last 100 years or so, a variety of uses have been found for what has proven to be a high quality, valuable resource. With this in mind, the steel industry within Europe now consider iron and steel slag to be products and not waste and as such have registered the materials under Reach (Registration, Evaluation Authorization and Restriction of Chemicals). Steel slag is formed by the addition of lime to the molten metal in order to remove impurities and to control the quality of the steel. The resultant slag is a complex mineral formed from oxides of calcium, aluminium, silicon and magnesium along with various other trace elements. Once cooled, the slag forms a crystalline rock that can be used as a replacement for natural aggregate in a variety of construction products, including asphalt. This paper specifi cally focuses on the use of steel slag as aggregate for asphalt mixtures in road construction and addresses the processing and quality control of the slag, along with its properties and the benefit of these properties for Asphalt materials.

Abtrennung und Verwertung von Glas aus Wirbelschicht-Bettasche
© Lehrstuhl für Abfallverwertungstechnik und Abfallwirtschaft der Montanuniversität Leoben (11/2014)
Bettasche aus Wirbelschichtöfen kann zu drei Viertel verwertet werden. Für ein hochwertiges Recycling stehen Metalle – Eisen/Stahl, Aluminium, sonst. Buntmetalle, Edelstähle und Glas zur Verfügung. Glasteile aus Bettasche können zur Herstellung eines hochwertigen Isolier- und Baumaterials eingesetzt werden – zur Herstellung von Schaumglas.

Ermittlung der Rückgewinnungspotentiale von metallischen Rohstoffen aus dem Nichtwohngebäudebestand
© DGAW - Deutsche Gesellschaft für Abfallwirtschaft e.V. (3/2014)
Non-residential buildings are often very complex and contain a lot of metals. Copper, steel, iron, aluminium and lead come with construction but also installation of machinery and equipment. Current deconstruction methods record metals separately, if metals occur purely. If metals are only a minor part of a composite material, they may be dumped with the main material and lost. Information as to the degree of separate collection of the metal inventories of buildings is lacking up to now.

Verwertung von Schlämmen/Schlacken zur Errichtung einer Deponiebasis
© Wasteconsult international (12/2010)
Mit Inkrafttreten der integrierten Deponieverordnung (DepV) sind strenge Vorgaben für den Einsatz von Ersatzbaustoffen auf Deponien festgesetzt worden. Neben der DepV regeln diverse weitere Erlasse und Richtlinien für den Einsatz von mineralischen Stoffen außerhalb von Deponien. Im vorliegenden Beitrag werden einige Regelwerke gegenübergestellt und Beispiele für die praktische Umsetzung gegeben.

Die Martin Trockenentschlackung mit integrierter Klassierung
© TK Verlag - Fachverlag für Kreislaufwirtschaft (6/2009)
Der trockene Austrag von Schlacken aus der Abfallverbrennung gewinnt im Zusammenhang mit der Rückgewinnung von Rohstoffen aus den Verbrennungsrückständen an Bedeutung. Insbesondere in der Schweiz, aber auch in zahlreichen anderen Ländern, hat sich in den letzten zwei Jahren ein reges Interesse an diesem Verfahren entwickelt.

Username:

Password:

 Keep me signed in

Forgot your password?