Título
Multi-objective Optimization of Water-using Systems
Autor
CARLOS EDUARDO MARIANO ROMERO
VICTOR HUGO ALCOCER YAMANAKA
EDUARDO FRANCISCO MORALES MANZANARES
Nivel de Acceso
Acceso Abierto
Materias
Resumen o descripción
Industrial water systems often allow ecient water uses via water
reuse and/or recirculation. The design of the network layout connect-
ing water-using processes is a complex problem which involves several
criteria to optimize. Most of the time, this design is achieved using
Water Pinch technology, optimizing the freshwater
ow rate enter-
ing the system. This paper describes an approach that considers two
criteria: (i) the minimization of freshwater consumption and (ii) the
minimization of the infrastructure cost required to build the network.
The optimization model considers water reuse between operations and
wastewater treatment as the main mechanisms to reduce freshwater
consumption. The model is solved using MDQL (Multi-objective Dis-
tributed Q-Learning), a heuristic approach based on the exploitation
of knowledge acquired during the search process. MDQL has been
previously tested on several multi-objective optimization benchmark
problems with promising results [16]. In order to compare the quality
of the results obtained with MDQL, the reduced gradient method was
applied to solve a weighted combination of the two objective functions
used in the model. The proposed approach was tested on three cases:
(i) a single contaminant four unitary operations problem where fresh-
water consumption is reduced via water reuse, (ii) a four contaminants
real-world case with ten unitary operations, also with water reuse, and
(iii) the water distribution network operation of Cuernavaca, Mexico,
considering reduction of water leaks, operation of existing treatment
plants at their design capacity, and design and construction of new
treatment infrastructure to treat 100% of the wastewater produced.
It is shown that the proposed approach can solved highly constrained
real-world multi-objective optimization problems.
Editor
Instituto Nacional de Astrofísica, Óptica y Electrónica
Fecha de publicación
2007
Tipo de publicación
Artículo
Versión de la publicación
Versión aceptada
Recurso de información
Formato
application/pdf
Idioma
Inglés
Audiencia
Estudiantes
Investigadores
Público en general
Sugerencia de citación
Eduardo F. Morales
Repositorio Orígen
Repositorio Institucional del INAOE
Descargas
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