The functioning of freshwater ecosystems and various water uses are affected by natural processes and anthropogenic activities in river basins. While natural pollution is mostly small the nutrient input due toman-made pollution force the eutrophication process. lt is characterised by an increase of dissolved nutrient concentrations, by excessive growth of plant biomass, and by restricted water uses due to anoxic water conditions as well as by odour problems. Especially, internal pollution by nutrient remobilisation from sediments plays an important role in shallow water bodies. A sustainable management of such freshwater ecosystems can be achieved by using effective simulation models. To evaluate the eutrophication process a simulation framework was developed including the DO balance and phosphorus remobilisation from sediments. Combining an eutrophication simulator with an optimisation tool a valuable water quality management tool will be obtained. Control strategies based on the limiting nutrient concept and on target values of LAWA (German State Working Group on Water Quality) were used to compute optimal solutions. Results are presented for shallow river stretches and riverine lakes of the Lower Havel River.
Operational Program Digital Poland, 2014-2020, Measure 2.3: Digital accessibility and usefulness of public sector information; funds from the European Regional Development Fund and national co-financing from the state budget.
Oct 15, 2021
Jul 19, 2021