Real-time control of combined surface water quantity and quality: polder flushing

Xu, Mingfei; Overloop, P. J. van; Giesen, Nick van de; Stelling, Guus S.

doi:10.2166/wst.2010.847

Cited by 22 publications

(24 citation statements)

References 11 publications

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“…The water courses or ditches in the polders are connected through hydraulic structures, such as weirs and sluices (Xu et al, 2010). Water levels in polders Abstract: Surface water salinization in deltaic areas due to saline groundwater exfiltration is an important issue.…”

Section: Poldersmentioning

confidence: 99%

“…The water courses or ditches in the polders are connected through hydraulic structures, such as weirs and sluices (Xu et al, 2010). Water levels in polders 1.…”

Section: Poldersmentioning

confidence: 99%

“…The water courses or ditches in the polders are connected through hydraulic structures, such as weirs and sluices (Xu et al, 2010). Water levels in polders and surrounding storage canals are maintained within a given margin so that the groundwater levels in the polders are kept close to a target level, to avoid dike failures in storage canals and acceleration of land subsidence is prevented (Lobbrecht et al, 1999).…”

Section: Poldersmentioning

confidence: 99%

“…The dynamics of the system are modelled using the De Saint-Venant (SV) equations for water movement and advection-dispersion (AD) equations for transport of dissolved matter. For the simulation model, these equations are discretized and linearized following (Stelling and Duinmeijer, 2003;Xu et al, 2010). The equations and discretization schemes are not given here for the sake of simplicity.…”

Section: Simulation Modelmentioning

confidence: 99%

See 3 more Smart Citations

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

et al. 2017

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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 change, sea level increase and fresh water availability increases the stress on deltaic areas resulting in questioning current fresh water management strategies. In this paper, a Model Predictive Control (MPC) scheme is developed and tested for combined salinity and water level control of a polder ditch. The MPC scheme is coupled with Rapid Saline Groundwater Exfiltration Model (RSGEM) developed for fast calculation of exfiltration flux and concentration in a low-lying polder. For the test case presented in this paper, real data from Lissertocht catchment in Netherlands is used for RSGEM to see the performance of the MPC scheme for a real scenario. With open space for further research, results presented on this paper show that MPC of salinity in polders is capable of dealing with saline groundwater exfiltration modeled by RSGEM.Keywords: Modeling and identification of environmental systems, Real-time control of environmental systems, Hydroinformatics, Climate change impact and adaptation measures, Water quality and quantity management, Water prediction and control.

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Section: Poldersmentioning

confidence: 99%

“…The water courses or ditches in the polders are connected through hydraulic structures, such as weirs and sluices (Xu et al, 2010). Water levels in polders 1.…”

Section: Poldersmentioning

confidence: 99%

Section: Poldersmentioning

confidence: 99%

Section: Simulation Modelmentioning

confidence: 99%

See 2 more Smart Citations

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

et al. 2017

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“…Their implementation in the field has been made possible by the development of sensors and SCADA systems [11], leading to more hydraulically efficient control strategies. Taking account of water quality objectives is more challenging, and to the best of our knowledge, little research work have been has been published in this domain [16]. Our objective is therefore to show how flow transfer and biomass detachment processes may be combined in an optimal open-loop control strategy, taking account of water quality constraints.…”

Section: Introductionmentioning

confidence: 99%

Modeling and control of algae detachment in regulated canal networks

Fovet

Litrico

Belaud

2010

2010 IEEE International Conference on Control Applications

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Abstract-Algae development in open-channel networks induce major disturbances because of clogging issues on hydraulic devices (pipes, weirs, filters,...). An original strategy to manage these algae developments consists in flushing the fixed algae. The flush is carried out by increasing the hydraulic shear conditions using the hydraulic structures of the canal network. In response to the shear stress increase, a part of the fixed algae is detached, then re-suspended into the water column, and finally transported into the canal network. This leads to a peak of turbidity. The present work aims at providing a design method for these flushes, based on a simplified detachment model. The efficiency of a flush will depend on its amplitude and duration. The design objective consists in maximizing the algae detachment using as little water as possible, and without overcoming a maximal turbidity level. We have developed a physical model to assess the impact of a flush on fixed and drift algae dynamics. We propose in this article a simplification of this model using linearization around a reference steady state regime

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High‐Performance Integrated Control of water quality and quantity in urban water reservoirs

Galelli

Castelletti

Goedbloed

2015

Water Resources Research

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This paper contributes a novel High‐Performance Integrated Control framework to support the real‐time operation of urban water supply storages affected by water quality problems. We use a 3‐D, high‐fidelity simulation model to predict the main water quality dynamics and inform a real‐time controller based on Model Predictive Control. The integration of the simulation model into the control scheme is performed by a model reduction process that identifies a low‐order, dynamic emulator running 4 orders of magnitude faster. The model reduction, which relies on a semiautomatic procedural approach integrating time series clustering and variable selection algorithms, generates a compact and physically meaningful emulator that can be coupled with the controller. The framework is used to design the hourly operation of Marina Reservoir, a 3.2 Mm3 storm‐water‐fed reservoir located in the center of Singapore, operated for drinking water supply and flood control. Because of its recent formation from a former estuary, the reservoir suffers from high salinity levels, whose behavior is modeled with Delft3D‐FLOW. Results show that our control framework reduces the minimum salinity levels by nearly 40% and cuts the average annual deficit of drinking water supply by about 2 times the active storage of the reservoir (about 4% of the total annual demand).

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Real-time control of combined surface water quantity and quality: polder flushing

Cited by 22 publications

References 11 publications

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

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

Modeling and control of algae detachment in regulated canal networks

High‐Performance Integrated Control of water quality and quantity in urban water reservoirs

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