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HYDROLOGICAL MODELLING

Modelling the dispersion of radionuclides, pollutants, and cooling water in the aquatic environment

3D lake and estuary model: THREETOX

R. Heling. NRG Arnhem, department of Radiation and Environment

THREETOX is...

A 3D model for modelling the behaviour of heavy metals, pesticides, and radionuclides in deep lakes, estuaries, and coastal areas.

THREETOX contains:

• Module for the hydrodynamics
• Module for the sediment transport
• Module for the pollutants behaviour including:
• Adsorption - Desorption processes
• Bottom Sediment - Water interactions

THREETOX is able to predict thermal effects

Figure: Heat Dispersion in the Chernobyl Cooling Pond

THREETOX has been applied on the marine environment:

• North Sea
• Black Sea
• Arctic Seas
• Baltic Sea

Figure: Interface of the THREETOX model

THREETOX software

THREETOX has an enhanced graphical interface for customisation, data input, operation, and presentation of the results.

THREETOX validation

THREETOX has been validated intensively. For instance Dnieper-Bug estuary (Ukraine), Bodensee (Germany), the Chernobyl Cooling Pond (Ukraine), and the harbours of Rotterdam (The Netherlands)

Other lake models: LATOX for stratified lakes. LAKECO for shallow lakes, including biota model.

Further information:

Version 2: April 2001