The use of models to assess water quality is becoming increasingly important worldwide. In order to be able to develop a good model, it is necessary to have a good quantitative and ecological description of physical, chemical and biological processes in ecosystems. Such descriptions may be called ``submodels''. This book presents the most important, but not all, submodels applied in water quality modelling. Each chapter deals with a specific physical process and covers its importance, the most applicable submodels (and how to select one), parameter values and their determination, and future research needs. The book will be an excellent reference source for environmental engineers, ecological modellers and all those interested in the modelling of water quality systems.

Table of Contents

Chapter 1. Introduction. The application of submodels. Overview of the presented submodels. 2. Volatilization. Introduction. The importance of volatilization in environmental context. Models of the volatilization process. The application of the volatilization submodel in environmental modelling. Parameter estimation in the volatilization submodel. Conclusions and future research needs. 3. Reaeration. Introduction. Measurement techniques. Predictive models. Analysis of predictive models for rivers. Summary and conclusion. 4. Adsorption and Ion Exchange. Introduction. Modelling adsorption and ion exchange. The application of adsorption and ion exchange submodels in water quality modelling. Parameter estimation in the adsorption-ion exchange submodel. Conclusions and further research needs. 5. Heat Exchange. Introduction. Evaluation of heat budget terms. Heat exchange at air-water interface. Applications. Acknowledgements. 6. Sedimentation. The role of sedimentation in modelling aquatic ecosystems. Models of sedimentation. Parameter estimation. Application in ecological modelling. Conclusions and further research needs. 7. Coagulation. Introduction. Models of the coagulation process. Aspects of application and parameter estimation. Conclusions and further research needs. 8. Precipitation. Introduction. Mathematical models of the precipitation process. Parameter estimation. Application and examples. 9. Complex Formation. Introduction. Models of complex formation. Parameter estimation. Application of complex formation in environmental models. Conclusions. 10. Hydrolysis and Chemical Redox Processes. Introduction. Models of hydrolysis and redox processes. Parameter estimation. Conclusions. 11. Photochemical Reactions. Introduction. Theoretical basis for the modelling of photochemical reac


© 1989
Elsevier Science
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