You need JavaScript to view this

Steam and hot air injection for thermal rehabilitation of contaminated sites; Wasserdampf- und Heissluftinjektion zur thermischen Sanierung kontaminierter Standorte

Abstract

Thermal in situ rehabilitation technologies are a promising alternative to conventional methods of cleaning up contaminated sites. The fact that an increase in temperature changes the physical properties of materials makes it possible, in principle, to release large quantities of pollutants within short time periods. The use of pure steam or steam/air mixtures as fluid thermal carriers permits converting subterranean non-aqueous-phase pollutants into the gas phase through increased vapour pressure and transporting them to the surface by means of soil air aspiration for further treatment. The purpose of the present two-stage research project was to systematically develop a thermal in situ rehabilitation technology using steam as fluid heat carrier and use it for land rehabilitation operations on a pilot basis. In the first, fundamental project phase aspects of heat transport (Faerber, 1997) and pollutant behaviour (Betz, 1998)in homogenous porous media upon pure steam injection were explored at a laboratory and technical scale using containers of different sizes (1D, 2D, 3D). The results were used to derive application criteria for this technology. [German] Thermische In-situ-Sanierungstechnologien stellen bei der Reinigung kontaminierter Standorte eine vielversprechende Alternative zu konventionellen Verfahren dar. Die Veraenderung physikalischer Stoffeigenschaften mit steigender Temperatur ermoeglicht grundsaetzlich hohe Schadstoffaustraege innerhalb kurzer  More>>
Authors:
Publication Date:
Jul 01, 2001
Product Type:
Thesis/Dissertation
Report Number:
ETDE-DE-1320
Resource Relation:
Other Information: TH: Diss. (Dr.-Ing.); PBD: 2001; Related Information: Universitaet Stuttgart, Institut fuer Wasserbau. Mitteilungen v. 106
Subject:
54 ENVIRONMENTAL SCIENCES; GROUND WATER; SOILS; IN-SITU PROCESSING; REMEDIAL ACTION; STEAM INJECTION; PETROLEUM PRODUCTS; WATER POLLUTION CONTROL; LAND POLLUTION CONTROL; PROCESS DEVELOPMENT UNITS; FIELD TESTS; HEAT TRANSFER; PHASE STUDIES
OSTI ID:
20313179
Research Organizations:
Stuttgart Univ. (Germany). Inst. fuer Wasserbau; Stuttgart Univ. (Germany). Fakultaet 2 - Bauingenieur- und Vermessungswesen
Country of Origin:
Germany
Language:
German
Other Identifying Numbers:
Other: ISBN 3-933761-09-3; ISSN 0343-1150; TRN: DE03G0262
Availability:
Available to ETDE participating countries only(see www.etde.org); commercial reproduction prohibited; OSTI as DE20313179
Submitting Site:
DE
Size:
213 pages
Announcement Date:
Mar 19, 2003

Citation Formats

Schmidt, R. Steam and hot air injection for thermal rehabilitation of contaminated sites; Wasserdampf- und Heissluftinjektion zur thermischen Sanierung kontaminierter Standorte. Germany: N. p., 2001. Web.
Schmidt, R. Steam and hot air injection for thermal rehabilitation of contaminated sites; Wasserdampf- und Heissluftinjektion zur thermischen Sanierung kontaminierter Standorte. Germany.
Schmidt, R. 2001. "Steam and hot air injection for thermal rehabilitation of contaminated sites; Wasserdampf- und Heissluftinjektion zur thermischen Sanierung kontaminierter Standorte." Germany.
@misc{etde_20313179,
title = {Steam and hot air injection for thermal rehabilitation of contaminated sites; Wasserdampf- und Heissluftinjektion zur thermischen Sanierung kontaminierter Standorte}
author = {Schmidt, R}
abstractNote = {Thermal in situ rehabilitation technologies are a promising alternative to conventional methods of cleaning up contaminated sites. The fact that an increase in temperature changes the physical properties of materials makes it possible, in principle, to release large quantities of pollutants within short time periods. The use of pure steam or steam/air mixtures as fluid thermal carriers permits converting subterranean non-aqueous-phase pollutants into the gas phase through increased vapour pressure and transporting them to the surface by means of soil air aspiration for further treatment. The purpose of the present two-stage research project was to systematically develop a thermal in situ rehabilitation technology using steam as fluid heat carrier and use it for land rehabilitation operations on a pilot basis. In the first, fundamental project phase aspects of heat transport (Faerber, 1997) and pollutant behaviour (Betz, 1998)in homogenous porous media upon pure steam injection were explored at a laboratory and technical scale using containers of different sizes (1D, 2D, 3D). The results were used to derive application criteria for this technology. [German] Thermische In-situ-Sanierungstechnologien stellen bei der Reinigung kontaminierter Standorte eine vielversprechende Alternative zu konventionellen Verfahren dar. Die Veraenderung physikalischer Stoffeigenschaften mit steigender Temperatur ermoeglicht grundsaetzlich hohe Schadstoffaustraege innerhalb kurzer Zeitraeume. Beim Einsatz von reinem Wasserdampf oder Wasserdampf-Luft-Gemischen als Waermetraegerfluid koennen im Untergrund in nicht waessriger Phase vorliegende Schadstoffe hauptsaechlich wegen der erhoehten Dampfdruecke in die Gasphase ueberfuehrt, ueber eine Bodenluftabsaugung an die Oberflaeche transportiert und dann einer weiteren Behandlung zugefuehrt werden. Zielsetzung eines zweistufigen Forschungsvorhabens war die systematische Entwicklung einer thermischen In-situ-Sanierungstechnologie unter Verwendung von Wasserdampf als Waermetraegerfluid und ein erster pilothafter Einsatz in der Altlastensanierungspraxis. In der grundlegenden ersten Projektphase wurden dabei die Aspekte des Waermetransports (Faerber, 1997) und des Schadstoffverhaltens (Betz, 1998) in homogenen poroesen Medien bei der reinen Dampfinjektion in Versuchsbehaeltern verschiedener Dimensionalitaet (1D, 2D, 3D) im Labor- und technischen Massstab untersucht und daraus Anwendungskriterien fuer die Technologie abgeleitet. (orig.)}
place = {Germany}
year = {2001}
month = {Jul}
}