Cost minimization of a WWTP using an augmented lagrangian pattern search based solver

This paper describes a derivative-free method that aims to solve an optimization problem arising from the mathematical formulation of an activated sludge system in which the objective is to minimize the investment and operation costs. The method relies on an augmented Lagrangian technique that uses...

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Bibliographic Details
Main Author: Espírito Santo, I. A. C. P. (author)
Other Authors: Fernandes, Edite Manuela da G. P. (author), Araújo, M. Manuela (author), Ferreira, Eugénio C. (author)
Format: conferencePaper
Language:eng
Published: 2007
Subjects:
Online Access:https://hdl.handle.net/1822/8964
Country:Portugal
Oai:oai:repositorium.sdum.uminho.pt:1822/8964
Description
Summary:This paper describes a derivative-free method that aims to solve an optimization problem arising from the mathematical formulation of an activated sludge system in which the objective is to minimize the investment and operation costs. The method relies on an augmented Lagrangian technique that uses a pattern search for solving bound constrained subproblems.