Integration of Optimal Dynamic Control and Neural Network for Groundwater Quality Management

Abstract

This study integrates an artificial neural network (ANN) and constrained differential dynamic programming (CDDP) to search for optimal solutions to a nonlinear time-varying groundwater remediation-planning problem. The proposed model (ANN-CDDP) determines optimal dynamic pumping schemes to minimize operating costs and meet water quality requirements. The model uses two embedded ANNs, including groundwater flow and contaminant transport models, as transition functions to predict groundwater levels and contaminant concentrations under time-varying pumping. Results demonstrate that ANN-CDDP is a simplified management model that requires considerably less computation time to solve a fine mesh problem. For example, the ANN-CDDP computing time for a case involving 364 nodes is 1/26.5 that of the conventional optimization model.

Spatio-Temporal Prediction for the Monitoring-Blind Area of Industrial Atmosphere Based on the Fusion Network

“…The method is an exploration for the multiple functions of the network. More functions of the networks, such as the prediction, regression, classification, and optimization [32], can be combined for a target issue. Meanwhile, from the application view, the spatial and temporal analysis is combined for the industrial atmospheric management.…”

Optimal groundwater remediation design of pump and treat systems via a simulation–optimization approach and firefly algorithm

“…To the authors' knowledge, the application of this optimization algorithm has not been considered so far in the design of remediation systems. To check the performance of the algorithm and study the performance using FA, the numerical examples were selected to be the same as those previously found in the literature (Li, Chen, and Pepper 2003;Sharief et al 2012;Chang, Chu, and Hsiao 2011;Singh and Chakrabarty 2011). To determine the simulation-optimization performance, three scenarios in which a hypothetical, homogeneous confined groundwater aquifer is polluted by a substance are considered.…”