INVESTIGADORES
AGUIRRE Pio Antonio
capítulos de libros
Título:
Synthesis and design of combined biological nitrogen and phosphorus removal WWT plants
Autor/es:
ALASINO, NOELIA; MIGUEL C. MUSSATI; NICOLÁS J. SCENNA; AGUIRRE PIO
Libro:
Computer Aided Chemical Engineering
Editorial:
Elsevier
Referencias:
Año: 2009; p. 1131 - 1136
Resumen:
optimization of the process configuration and equipment dimensions- i.e., process
synthesis and design- and the operation conditions of activated sludge wastewater
treatment plants (Alasino et al., 2007) will be extended to account for phosphorus as
well as nitrogen removal. Continuous operation is supposed, and the influent
wastewater flowrate and composition are assumed known. The performance criterion
selected is to minimize the net present value including investment and operating costs
while verifying compliance with the effluent permitted limits.
The Activated Sludge Model No. 3 extended with the Bio-P module for computing
biological phosphorus removal is used to model the reaction compartments, and the
Takàcs model for representing the secondary settler. In the present work, new variables
and equations for components accounting for phosphorus removal processes are
incorporated and the superstructure is also enlarged to embed the most widely used
combined N and P removal process configurations. Therefore, the complexity of the
problem has been increased. The problem is posed as a NLP problem, specifically a
nonlinear programming problem with discontinuous derivatives -DNLP-, as it results in
a highly nonlinear system with non-smooth functions. The model is implemented and
solved using General Algebraic Modelling System (GAMS), and proved to be robust
and flexible. Results for case studies are presented and discussed.