Nonlinear model predictive control of salinity and water level in polder networks: Case study of Lissertocht catchment

A significant increase in surface water salinization in low-lying deltas is expected globally due to saline groundwater exfiltration driven by rising sea levels and decreasing freshwater availability. Sustaining fresh water-dependent agriculture in such areas will entail an increased demand for fresh water flushing. Unfortunately, the...

Optimal salinity and water level control of water courses using Model Predictive Control

Worldwide, delta areas are under stress due to climate change. With rising sea<br/>levels and decreasing freshwater availability, surface water salinization due to<br/>groundwater exfiltration is expected to increase in these low-lying areas. To<br/>counteract surface water salinization, freshwater diverted from rivers is used to flush...

A greedy algorithm for optimal sensor placement to estimate salinity in polder networks

We present a systematic approach for salinity sensor placement in a polder network, where the objective is to estimate the unmeasured salinity levels in the main polder channels. We formulate this problem as optimization of the estimated salinity levels using root mean square error (RMSE) as the "goodness of fit" measure. Starting from a...

Model Predictive Control of Salinity in a Polder Ditch under High Saline Groundwater Exfiltration Conditions: A Test Case

Surface water salinization in deltaic areas due to saline groundwater exfiltration is an important issue. Saline surface water will not be appropriate for drinking water production, agricultural and industrial use, and therefore, freshwater diverted from rivers is used for flushing the canals and ditches in coastal areas. The effects of climate...

Veranderingen in het grondwatersysteem van het Markermeergebied

Voor het begrijpen van de oppervlaktewaterpeil-grondwater relatie en het bepalen van de uitstraling van peilverandering of deklaagvergraving van het Markermeer op zijn omgeving is een beter inzicht nodig over de opbouw van de ondiepe ondergrond en de variaties in de doorlatendheid (viz. hydraulische weerstand) van de deklaag. De onder de...

Old contaminated sediments in the Rhine basin during extreme situations

Sediments play an important role in water resources management. In the past, hazardous contaminants from municipal and industrial wastewater effluents and from agriculture were discharged in large quantities into the water bodies and accumulated within the bottom sediments. Today, relatively unpolluted recent sediment surface layers cover older...