Calle 48 y 116 piso 2 - CC 91
La Plata (1900), BA, Argentina
Tel: +54-221-425-9306
Email:martin.jamilis@ing.unlp.edu.ar
Formación Académica
- Ingeniero en Electrónica, Facultad de Ingeniería, UNLP
- Doctor en Ingeniería, Facultad de Ingeniería, UNLP
Posición actual
- Profesor Adjunto del Área Control Automático, Facultad de Ingeniería, UNLP
- Investigador asistente, CONICET, Argentina
Área de Investigación actual
Perfiles
2020
Jamilis, Martín; Garelli, Fabricio; Battista, Hernán De; Volcke, Eveline I. P.
Combination of cascade and feed-forward constrained control for stable partial nitritation with biomass retention Artículo de revista
En: Journal of Process Control, vol. 95, pp. 55-66, 2020, ISSN: 0959-1524.
@article{JAMILIS202055,
title = {Combination of cascade and feed-forward constrained control for stable partial nitritation with biomass retention},
author = {Martín Jamilis and Fabricio Garelli and Hernán De Battista and Eveline I. P. Volcke},
url = {https://www.sciencedirect.com/science/article/pii/S0959152420302870},
doi = {https://doi.org/10.1016/j.jprocont.2020.09.002},
issn = {0959-1524},
year = {2020},
date = {2020-01-01},
journal = {Journal of Process Control},
volume = {95},
pages = {55-66},
abstract = {Ammonium removal is a key step in wastewater treatment which can be accomplished biologically. An interesting process option for this purpose is coupling partial nitritation with the Anammox process. The goal of the partial nitritation process is to convert half of the ammonium in the influent stream into nitrite, so both can be later converted into dinitrogen gas by the Anammox reaction. To obtain a stable partial nitritation, ammonium oxidizing bacteria (AOB) have to prevail over nitrite oxidizing bacteria (NOB) so as to avoid further conversion of nitrite into nitrate. The dissolved oxygen concentration is a key variable for the functional group selection. In this study, a constrained combination of cascade and feedforward control is proposed for reactors with biomass retention, aimed at suppressing unwanted NOB while keeping a nitrite:ammonium ratio suitable for coupling with Anammox. The master controller, aimed to regulate this effluent ratio, generates the set-point for the dissolved oxygen concentration slave controller. In addition to the cascade controller feedback loop, a feed-forward controller calculates the optimal dissolved oxygen concentration based on the current influent stream flow rate and concentrations. The resulting dissolved oxygen concentration set-point is compared to constraints that guarantee the suppression of NOB and survival of AOB. The proposed control strategy is simple to apply in common wastewater treatment plants with biomass retention. A sensitivity analysis is performed to assess the effect of model parameters uncertainty on the controller constraints and to determine which parameters need to be identified with more precision to avoid instability or poor results. The performance and the effect of the uncertainty of the most sensitive parameters on the proposed control algorithm are assessed through simulation using realistic streams as inputs of the process.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Ammonium removal is a key step in wastewater treatment which can be accomplished biologically. An interesting process option for this purpose is coupling partial nitritation with the Anammox process. The goal of the partial nitritation process is to convert half of the ammonium in the influent stream into nitrite, so both can be later converted into dinitrogen gas by the Anammox reaction. To obtain a stable partial nitritation, ammonium oxidizing bacteria (AOB) have to prevail over nitrite oxidizing bacteria (NOB) so as to avoid further conversion of nitrite into nitrate. The dissolved oxygen concentration is a key variable for the functional group selection. In this study, a constrained combination of cascade and feedforward control is proposed for reactors with biomass retention, aimed at suppressing unwanted NOB while keeping a nitrite:ammonium ratio suitable for coupling with Anammox. The master controller, aimed to regulate this effluent ratio, generates the set-point for the dissolved oxygen concentration slave controller. In addition to the cascade controller feedback loop, a feed-forward controller calculates the optimal dissolved oxygen concentration based on the current influent stream flow rate and concentrations. The resulting dissolved oxygen concentration set-point is compared to constraints that guarantee the suppression of NOB and survival of AOB. The proposed control strategy is simple to apply in common wastewater treatment plants with biomass retention. A sensitivity analysis is performed to assess the effect of model parameters uncertainty on the controller constraints and to determine which parameters need to be identified with more precision to avoid instability or poor results. The performance and the effect of the uncertainty of the most sensitive parameters on the proposed control algorithm are assessed through simulation using realistic streams as inputs of the process.
2019
Jamilis, Martín; Garelli, Fabricio; Battista, Hernán De; Volcke, Eveline I. P.
Stability and control of a partial nitritation reactor with biomass retention Artículo de revista
En: Chemical Engineering Research and Design, vol. 144, pp. 318-333, 2019, ISSN: 0263-8762.
@article{JAMILIS2019318,
title = {Stability and control of a partial nitritation reactor with biomass retention},
author = {Martín Jamilis and Fabricio Garelli and Hernán De Battista and Eveline I. P. Volcke},
url = {https://www.sciencedirect.com/science/article/pii/S0263876219300644},
doi = {https://doi.org/10.1016/j.cherd.2019.02.017},
issn = {0263-8762},
year = {2019},
date = {2019-01-01},
journal = {Chemical Engineering Research and Design},
volume = {144},
pages = {318-333},
abstract = {Partial nitritation–anammox process is an interesting process option for biological nitrogen removal from wastewater. Partial nitritation needs to provide about equimolar ammonium and nitrite concentrations as required for the Anammox conversion. This study analyzes the equilibrium points of a stand-alone partial nitritation process as part of a two-reactor partial nitritation-anammox configuration. Conditions for the feasibility and stability of the equilibrium points are obtained in the general case of a reactor with biomass retention and controlled oxygen concentration. This knowledge is subsequently applied to achieve the desired reactor behavior, namely suppressing nitrite oxidizing bacteria (NOB) and obtaining the desired effluent nitrite:ammonium ratio. The optimal oxygen concentration to achieve these two objectives is determined. Moreover, a control algorithm is proposed to drive the process to the desired operating point. Its steady state behavior is assessed for changing influent ammonium concentrations and biomass retention times. The dynamic performance of the controller is tested through simulation as well, prioritizing NOB suppression in case the two objectives are not compatible.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Partial nitritation–anammox process is an interesting process option for biological nitrogen removal from wastewater. Partial nitritation needs to provide about equimolar ammonium and nitrite concentrations as required for the Anammox conversion. This study analyzes the equilibrium points of a stand-alone partial nitritation process as part of a two-reactor partial nitritation-anammox configuration. Conditions for the feasibility and stability of the equilibrium points are obtained in the general case of a reactor with biomass retention and controlled oxygen concentration. This knowledge is subsequently applied to achieve the desired reactor behavior, namely suppressing nitrite oxidizing bacteria (NOB) and obtaining the desired effluent nitrite:ammonium ratio. The optimal oxygen concentration to achieve these two objectives is determined. Moreover, a control algorithm is proposed to drive the process to the desired operating point. Its steady state behavior is assessed for changing influent ammonium concentrations and biomass retention times. The dynamic performance of the controller is tested through simulation as well, prioritizing NOB suppression in case the two objectives are not compatible.