Mødearkiv | Contaminated fractured rock – characterization, natural attenuation and thermal remediation
Contaminated fractured rock – characterization, natural attenuation and thermal remediation
Mødenr. 30 - Gå-hjem-møde


Tidspunkt Mandag den 22. september 2014, kl. 16.00 – 18.00


Sted

DTU, Bygning 113, mødelokale 011









Faglig tilrettelæggelse

Østgruppen under ATV Jord og Grundvand v/
Seniorforsker Gitte Lemming Søndergaard, DTU Miljø, This e-mail address is being protected from spambots. You need JavaScript enabled to view it ,dk
Lektor Mette M. Broholm, DTU Miljø, This e-mail address is being protected from spambots. You need JavaScript enabled to view it


Arrangør
Lisbeth Verner, ATV Jord og Grundvand, This e-mail address is being protected from spambots. You need JavaScript enabled to view it


Emne
Contaminated fractured rock represents a challenge both in regard to prediction of contaminant plumes, but also in regard to remediation. In Denmark this type of geology can be compared with the challenges posed by limestone aquifers. In this meeting we proudly present two guest speakers, from the US and Canada respectively, who work with contaminated fractured rock from two different perspectives.

Beth Parker, professor at Guelph University, will talk about fractured rock from the perspective of site characterization in order to improve the assessment of contaminant fate and transport and remedial assessment. Fracture networks comprise the primary transport pathway in fractured rock and the porous rock matrix provides strong contaminant storage capacity. Beth Parker presents an approach referred to as the Discrete Fracture Network (DFN) approach. The approach has been applied to a number of sites and has led to the development of a General Conceptual Model for plume formation and evolution in fractured sedimentary rock.

The presentation by Gorm Heron, TerraTherm, will focus on the application of in situ thermal remediation to fractured rock. So far, in situ thermal remediation has been used successfully to treat sites with unconsolidated geology (sand, silt, clay, etc.). In consolidated media (referred to here as rock), the situation is different. Matrix diffusion can lead to strong binding of contaminants in the matrix, and flow in fractures can be difficult to understand and characterize. Once a site is heated, it is therefore a challenge to ensure that both the matrix and fracture zones receive treatment, and to ensure that the vaporized contaminants are extracted. Experiences from application of steam enhanced extraction and thermal conduction heating in granite, gneiss, saprolite, chalk, limestone, siltstone, and mudstone will be presented.

  • Strong Natural Attenuation of Chlorinated Solvent Plumes in Fractured Sedimentary
    Rock Aquifers. Beth Parker, Professor and NSERC Industrial Research Chair, University of Guelph, School of Engineering, Canada
  • In-Situ Thermal Treatment of Fractured Rock. Gorm Heron, TerraTherm.


Nærmere oplysninger fås ved henvendelse til Gitte Lemming Søndergaard, DTU, tlf.: 4525 1595 – email: This e-mail address is being protected from spambots. You need JavaScript enabled to view it eller Mette M. Broholm, tlf.: 4525 1475 – email:
This e-mail address is being protected from spambots. You need JavaScript enabled to view it


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