LNAPL/DNAPL Phase Skimming on the Contaminated Site „Kokerei Linz”

The coke oven plant started production in 1942 and was rebuilt after the extensive damage towards the end of World War II. For the production of by-products tar and crude benzene (light oil, coal) were distilled on site. Due to the effects of war and associated with the destruction of various parts of the coking plant, there were massive contaminations of the soil at the operational facilities. Based on these contaminations in soil there is still a signifi cant input of pollutants into the groundwater.

As a result a plume of PAHs (polycyclic aromatic hydrocarbons) and BTEX (benzene, toluene, ethylbenzene and xylene) has been formed over several hundred meters length in groundwater due to the incidents at the end of World War II until now. As part of the remediation project of the contaminated site O76 “Kokerei Linz” it is foreseen to remove pollutants out of the groundwater by phase skimming with special wells. In the saturated soil area the organic phases, so-called LNAPL (Light Non-Aqueous Phase Liquid) and DNAPL(Dense Non-Aqueous Phase Liquid) should be removed with this emerging technique. In order to obtain an estimation of the discharge of the organic phase and to determine the respective impactfactors on skimming, this process is illustrated by means of mathematical simulation models. Byvarying the extraction wells, in their position and shape (vertical, horizontal), the different effects and impacts can be simulated with the mathematical models. Thus the results of the mathematical simulation models serve as a basis for the decision making process in the selection of position and shape of the extraction wells. With a “pilot test” field parameters should be obtained on site. With these parameters the simulation model and especially the construction of the phase skimming installation can be improved and optimised.



Copyright: © Lehrstuhl für Abfallverwertungstechnik und Abfallwirtschaft der Montanuniversität Leoben
Source: Depotech 2014 (November 2014)
Pages: 1
Price: € 0,00
Autor: Christoph Angermayer
Gregor Gnjezda
Dipl.-Ing. Andreas Schönberg

Send Article Display article for free Comment article


These articles might be interesting:

Material Flow Analysis of Specific Nanomaterials in C&D Waste in Japan
© Lehrstuhl für Abfallverwertungstechnik und Abfallwirtschaft der Montanuniversität Leoben (11/2014)
The objective of this study is to clarify the material flow of specific nanomaterials with focus on construction materials to deviate its release scenarios for the end-of-life phase. The waste stream of construction and demolition (C&D) waste is very challenging because it is generated by both households and industry. Furthermore, the volume of C&D waste in Japan or in Austria is very high. Regarding nanotoxicity, the content of engineered nanomaterials (ENMs) in paints for construction materials is considerable. Chen et al. (2008) pointed out that SiO2 nanoparticles can easily be airborne because of their size. Kaegi et al. (2008 & 2010) have also shown that the nano-fraction of the whitening pigment (TiO2) and nano-Ag was released into surface water under real weather conditions from facade coatings.

Feeding of Refuse Derived Fuels in the Cement Industry
© Lehrstuhl für Abfallverwertungstechnik und Abfallwirtschaft der Montanuniversität Leoben (11/2014)
In the energy-intensive industries of cement production, the use of refuse derived fuels (EBS) is in common since several years especially to decrease costs.

Combined Hydraulic and Microbiological In-Situ Remediation on Vienna Central Station
© Lehrstuhl für Abfallverwertungstechnik und Abfallwirtschaft der Montanuniversität Leoben (11/2014)
In the course of the complete teardown of the area of the former southern and eastern railway stations of Vienna and its complete redesign as a new central railway station of Vienna a substantial diesel contamination was detected. In the perspective of a sustainable solution ÖBB decided to eliminate this spill. For this purpose, initially around 4,500 m³ pollutant-containing soil were excavated and disposed. The remaining area was cleaned by an in situ remediation.

State of the Art from Chemical-Physical Treatment Facilities for Fluid Hazardous Wastes Disposal
© Lehrstuhl für Abfallverwertungstechnik und Abfallwirtschaft der Montanuniversität Leoben (11/2012)
Chemical-physical treatment facilities for hazardous fluid wastes represents an important disposal path in Austria. Therefore, two studies (IAE in order for the province of Styria, the Federal Environment Agency) were carried out, which deals with the potential waste input, facility capacities, prevailing configurations and the difference between state of the art and best available techniques in this kind of waste disposal.

bifa-Text Nr. 57: Die Abfallwirtschaft im Jahr 2030 - Eine Szenarioanalyse nicht nur für Bayern
© bifa Umweltinstitut GmbH (5/2012)
In einer neuen Studie des bifa Umweltinstituts werden mögliche Entwicklungen der regionalen, nationalen und internationalen Rahmenbedingungen für die bayerische Abfallwirtschaft im Jahr 2030 dargestellt sowie deren Auswirkungen auf die Abfallwirtschaftsstrukturen und auf die Ökoeffizienz. Das Projekt wurde im Auftrag des Bayerischen Staatsministeriums für Umwelt und Gesundheit durchgeführt. Die Ergebnisse bieten auch anderen Behörden, Unternehmen und Verbänden in Deutschland eine Basis für die eigene Positionierung und Strategieentwicklung.

Username:

Password:

 Keep me signed in

Forgot your password?