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Micropollutants in Large Lakes

From Potential Pollution to Risk Assessements

 

De Nathalie Chèvre

 

EPFL Press - Collection : Environmental Engineering - 09/01/2018

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    Présentation

    Scientists, regulators, and the general public are now more and more aware of the chemicals present in surface waters worldwide. Agrochemicals, such as herbicides or insecticides, pharmaceuticals and cosmetics can be detected at low to medium concentrations in seas, groundwaters and rivers. Among freshwaters, lakes are of particular concern. These large reservoirs are used as sources of food and drinking water, but also serve for recreational activities. This book aims in presenting insights into the physical, chemical, and ecological dynamics of mid-sized lakes that enable proposing recommendations for sustainable lake management regarding chemicals. Lake Geneva, Switzerland, is used as a case study, but the developed methodologies and tools can be useful for lake water quality management in general.

    Sommaire

    • 1 Introduction – Lakes as a resource – Micropollutants in surface waters: a worldwide recognition of the issue – Book chapters – References
    • 2 Agricultural sources of micropollutants: from the catchment to the lake – Agricultural sources of micropollutants of the catchment – Source and transport dynamics of glyphosate: a case study of Swiss vineyards – Synthesis and conclusions – References
    • 3 Urban sources of micropollutants: from the catchment to the lake – Introduction – Micropollutants found in urban waters – Fate of micropollutants in WWTPs – Conclusions – References
    • 4 Currents of Lake Geneva – Introduction – Wind patterns on Lake Geneva – Hydrodynamic modelling – Vidy Bay current patterns – Transport of water within Lake Geneva based on the stable isotope compositional variations of water in Lake Geneva – Summary and conclusion – References
    • 5 Occurrence, fate and ecotoxicological relevance of micropollutants in Vidy Bay – Introduction – The Vidy Bay, morphology and pollution source – Vidy Bay hydrodynamics – Spatio-temporal occurrence of micropollutants in Vidy Bay – Ecotoxicological risk associated with wastewater-derived micropollutants – Dilution and degradation processes affecting micropollutant concentrations in Vidy Bay – Modelling the micropollutant plume in Vidy Bay – Environmental implications – References
    • 6 Sediment-bound contaminant transport dynamics in and around Vidy Bay – Introduction – Hydrodynamics within the bay – Contaminant path tracing and sediment focusing – Colloid and aggregate characterisation – Vertical and lateral sedimentation pathways in Vidy Bay – Hydrodynamic conditions of Vidy Bay’s BBL – Conclusions – References
    • 7 Mixture risk assessment of chemical: from the theory to the application – Introduction – Mixture effect assessment theory – Risk assessment of chemical mixtures in the Lake Geneva catchment – Comparison with ecological data – Conclusion – References
    • 8 Synthesis and perspectives – References
    • Informations

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