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Balancing of Pollutant Emissions in the Underground

The transport of contaminants in the subsurface is a very complex process and is influenced by a variety of factors. Such complex processes, as e.g. the pollutant transport, should be described with the aid of simplified equivalent models.

Under an equivalent model, a model with a simplified approach is to be understood, which considers only the essential aspects of processes, describes them abstract, and still delivers realistic results. With an abstract representation of the processes it should be allowed to accept boundary conditions that lead to a simple solution of the problem. As an outcome, the complex process can be described qualitatively and despite the simplified assumptions the results should deliver realistic values. A statement on the actual processes taking place here cannot be made, since these actions are described equivalently. Based on the underlying physical and chemical processes an equivalent model will be created for a particular case, and describes the transport of pollutants.
By using the equivalent mathematical models it will be attempted to obtain meaningful predictions about the spread of pollutant loads due to different occurring processes. The goal is to provide the application of analytical solutions by suitable abstraction of the actual processes involved in the model area. This fact has the advantage of exact mathematical solutions which results can be achieved more quickly. An extensive variation of various parameters in the imaged model area (chemical and physical substance/ground parameters) is in the context of quasisensitivity analysis in this way can be carried out efficiently.
Requirement for the usability of such methodological approaches is to provide a suitable description of actual processes in the study area, with the necessary assumption of simplified geometric boundary conditions and homogeneous conditions in the model area, which is a prerequisite for analytical solutions. The presented methodological approaches will ultimately represent suitable for practical planning tools for the prediction and interpretation of various remedial measures concerning the reduction or removal of contaminants from the subsurface. Here two models are presented that differ fundamentally in the modes of action of contaminant transport.

Copyright:	© Lehrstuhl für Abfallverwertungstechnik und Abfallwirtschaft der Montanuniversität Leoben
Quelle:	Depotech 2012 (November 2012)
Seiten:	6
Preis:	€ 3,00
Autor:	Dipl.-Ing. Andreas Schönberg Univ. Prof. Dipl.-Ing. Dr.techn. Harald Raupenstrauch Univ.Prof. Dipl.-Ing. Dr.techn. Dietmar Adam M. Zorzi J. Czeczil
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