Skip to main content
main-content

Tipp

Weitere Artikel dieser Ausgabe durch Wischen aufrufen

01.09.2016 | Original Article | Ausgabe 18/2016

Environmental Earth Sciences 18/2016

Modeling contaminant leaching and transport to groundwater in Tier 2 risk assessment procedures of contaminated sites

Zeitschrift:
Environmental Earth Sciences > Ausgabe 18/2016
Autoren:
Francesco Mazzieri, Marta Di Sante, Evelina Fratalocchi, Erio Pasqualini

Abstract

The current approach to the management of contaminated sites includes a risk assessment procedure as a crucial step. In some jurisdictions (e.g., Italy), groundwater must be considered as a target of contamination. In other cases (e.g., USA), risks from exposure to contaminated groundwater (e.g., through the ingestion of contaminated water) must be taken into account. If the contaminant source is located in the vadose zone, the risk assessment requires modeling of contaminants leaching and subsequent transport to groundwater. In Tier 2 risk assessments, analytical transport models are used for this purpose. This paper compares steady state and a transient approach for modeling the leaching and migration of contaminants to groundwater. The steady-state model that was used considers soil–water partitioning, soil attenuation during transport and dilution with groundwater in a defined mixing zone. The transient model that was used considers source depletion due to leaching and volatilization, one-dimensional solute transport and a novel approach to the modeling of dilution with groundwater. Comparative simulations were performed with regard to a given site geometry and to index substances representing different contaminant classes: aromatic solvents, chlorinated solvents, and heavy metals. The results of the study indicate that, although steady-state models are simple and easy-to-use, taking into account the time variable is essential for a reasonable simulation of contaminant transport to groundwater, particularly for contaminants with high partition coefficients migrating through fine-grained soils.

Bitte loggen Sie sich ein, um Zugang zu diesem Inhalt zu erhalten

Sie möchten Zugang zu diesem Inhalt erhalten? Dann informieren Sie sich jetzt über unsere Produkte:

Springer Professional "Wirtschaft+Technik"

Online-Abonnement

Mit Springer Professional "Wirtschaft+Technik" erhalten Sie Zugriff auf:

  • über 69.000 Bücher
  • über 500 Zeitschriften

aus folgenden Fachgebieten:

  • Automobil + Motoren
  • Bauwesen + Immobilien
  • Business IT + Informatik
  • Elektrotechnik + Elektronik
  • Energie + Umwelt
  • Finance + Banking
  • Management + Führung
  • Marketing + Vertrieb
  • Maschinenbau + Werkstoffe
  • Versicherung + Risiko

Testen Sie jetzt 30 Tage kostenlos.

Springer Professional "Technik"

Online-Abonnement

Mit Springer Professional "Technik" erhalten Sie Zugriff auf:

  • über 50.000 Bücher
  • über 380 Zeitschriften

aus folgenden Fachgebieten:

  • Automobil + Motoren
  • Bauwesen + Immobilien
  • Business IT + Informatik
  • Elektrotechnik + Elektronik
  • Energie + Umwelt
  • Maschinenbau + Werkstoffe




Testen Sie jetzt 30 Tage kostenlos.

Literatur
Über diesen Artikel

Weitere Artikel der Ausgabe 18/2016

Environmental Earth Sciences 18/2016 Zur Ausgabe