NEOS server usage in wastewater treatment cost minimization

Authors:
I. A. C. P. Espírito-Santo;Edite M. G. P. Fernandes;M. M. Araújo;E. C. Ferreira
Affiliations:
Systems and Production Department, Minho University, Braga, Portugal;Systems and Production Department, Minho University, Braga, Portugal;Systems and Production Department, Minho University, Braga, Portugal;Centre of Biological Engineering, Minho University, Braga, Portugal
Venue:
ICCSA'05 Proceedings of the 2005 international conference on Computational Science and Its Applications - Volume Part IV
Year:
2005

Citing 2
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Abstract

This paper describes the optimal design and operation of an activated sludge system in wastewater treatment plants. The optimization problem is represented as a smooth programming problem with linear and nonlinear equality and inequality constraints, in which the objective is to minimize the total cost required to design and operate the activated sludge system under imposed effluent quality laws. We analyze four real world plants in the Trás-os-Montes region (Portugal) and report the numerical results obtained with the FILTER, IPOPT, SNOPT and LOQO optimizers.