Water sustainability: A systems engineering approach to restoration of eutrophic Lakes

We address restoration of eutrophic lakes and reservoirs through the formulation of dynamic optimization problems subject to complex PDAE systems representing biogeochemical processes in the water bodies. The model includes phytoplankton, zooplankton, fish, nutrients, DO, particulate and dissolved c...

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Bibliographic Details
Published in:Computers & chemical engineering 2011-08, Vol.35 (8), p.1598-1613
Main Authors: Estrada, V., Di Maggio, J., Diaz, M.S.
Format: Article
Language:English
Subjects:
Biomanipulation
Dynamic optimization
Dynamical systems
Dynamics
Eutrophic lakes
Eutrophication
Fish
Freshwater
Mathematical analysis
Mathematical models
Optimal control
Parametrization
Restoration
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Summary:We address restoration of eutrophic lakes and reservoirs through the formulation of dynamic optimization problems subject to complex PDAE systems representing biogeochemical processes in the water bodies. The model includes phytoplankton, zooplankton, fish, nutrients, DO, particulate and dissolved carbon dynamics. The PDAE has been transformed into an ordinary differential algebraic equation system by spatial discretization into two water layers. An optimal control problem for the implementation of three different restoration techniques and their combinations has been formulated within a control vector parameterization approach. Numerical results for the different problems provide optimal profiles for tributary deviation flowrate through a nearby wetland, aeration rates and fish removal rates, as restoration strategies.
ISSN:0098-1354
1873-4375
DOI:10.1016/j.compchemeng.2011.03.003