[The PEGASE model [planification and management of water purification], a methodology and a tool for a predictive simulation for the surface water quality management] | PEGASE, une methodologie et un outil de simulation previsionnelle pour la gestion de la qualite des eaux de surface
1997
Smitz, J. | Everbecq, E. | Deliege, J.F. (Universite de Liege (Belgium). Centre d'etude et de modelisation de l'environnement) | Descy, J.P. | Wollast, R. | Vanderborght, J.P.
The PEGASE model has been developed as a tool for surface water management. It provides a deterministic and predictive assessment of the water quality as a function of pollutants loads, under various hydrological conditions. PEGASE is an integrated basin / river model. PEGASE is able to handle a few hundred of rivers simultaneously and the area of hydrological basins can rise up to a few ten thousands square kilometres. PEGASE includes a hydrological and hydrodynamic sub-model, a thermal sub-model and a sub-model of the water quality and of the aquatic ecosystem. PEGASE offers a structured approach and inventory of domestic loads, industrial loads, role of purification plants, diffuse loads by the soils and direct loads from rearing. PEGASE calculates explicitly the mechanisms of self-purification in the rivers and calculates the evolution of eutrophication. PEGASE enables the comparison of scenarios in order to design optimal policies. PEGASE can be used through a graphic user-friendly interface. Input data and computed results are processed and visualized by a Geographical Information System (GIS)
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