Keybioeffects

Erosion testing methods and techniques for...

Contaminated Sediment Management

SHC 3:
Title Erosion testing methods and techniques for cohesive sediments
Institute responsible for organization University of Stuttgart (Bernhard Westrich)

contact: Gerhard.Schmid@iws.uni-stuttgart.de

or Westrich@iws.uni-stuttgart.de
 

Contents - application of testing devices ( CSM, MICROCOSM, SETEG, EROMOB et al. ) on homogenized soft and/ or weakly consolidated natural sediments and very fine non cohesive material ( reference test material)

- evaluation and presentation of results: performance of the equipment (erosion threshold and erosion rate)

- intercomparison, correlation, upscaling issues etc.

- geochemical and biological parameters affecting sediment stability

- practical application, outlook
 

Background necessary -
Place University of Stuttgart, Germany
 
Duration (h) 2d
ECT -
Time 27th – 28th May 2008
Max number of participants -
SHC 2:

  

Title Contaminated Sediment Management
Institute responsible for organization University of Stuttgart (Bernhard Westrich)
Objectives In most cases river pollution is associated with sediment contamination which causes many problems in water resources and sediment management. The course is dealing with engineering and environmental issues of contaminated sediments with emphasis on their potential hazard, mobilization risk and environmental impact. An interdisciplinary approach based on river hydraulics, sediment transport dynamics and pollutant chemistry is described and a basic concept for a risk based sediment management is presented based on: sediment toxicity, erosion probability and emission / immission relationship. An environmental impact assessment will be discussed on a river basin scale referring to areas of concern, fate and pathway of sediment bound contaminants as well as deposition of particulate contaminants in a river system. Experimental methods for cohesive sediment

erosion tests and, in particular the numerical modelling of dissolved and particulate contaminant transport including erosion, sedimentation, mixing, sorption and degradation will be presented for predicting the emission-immission relationship. An engineering approach of a model based risk assessment addressing uncertainties of physical and chemical model parameters and their impact on contaminated sediment mobilization is presented. Finally, practical applications of contaminated sediment transport models for estimating the resuspension risk and transport behaviour of contaminants in rivers will be described and discussed.

Contents 1) River engineering and water resources aspects of contaminated sediments,

risk based sediment management strategy

2) Water -sediment - pollutant interaction, substances and areas of concern, risk

indicators

3) Environmental risk assessment, risk based sediment management on local

and river basin scale

4) Contaminated sediment properties: erosion stability; physical, chemical &

biological parameters related to sediment stability

5) Contaminant transport modelling, 1-d and 2-d flow & transport models, model

calibration and parameter uncertainty assessment

6) Model applications, case studies: Impact of floods on the mobilization of

contaminants in impounded rivers. Deposition and resuspension of

contaminants in regulated waterways
 

Background necessary -
Place IAHR conference, Venice, Italy
 
Duration (h) 1d (7h)
ECT -
Time 1st July 2007
Max number of participants -