PI Dissolved Oxygen control in wastewater treatment plants for plantwide nitrogen removal efficiency

Silvana Revollar; Ramón Vilanova; Mario Francisco; Pastora Vega

doi:10.1016/j.ifacol.2018.06.136

PI Dissolved Oxygen control in wastewater treatment plants for plantwide nitrogen removal efficiency

Silvana Revollar, Ramón Vilanova, Mario Francisco, Pastora Vega

Department of Telecommunications and Systems Engineering

Research output: Contribution to journal › Article › Research › peer-review

21 Citations (Scopus)

Abstract

© 2018 In this paper, a PID based hierarchical control structure is proposed to improve the overall WWTP performance. The control problem is focused on the definition of integral efficiency indices for a typical WWTP operation. The efficiency index considered in this work is the ratio between the nitrogen removed in the activated sludge process (Kgr N) and the energy (kWh) required for eliminating that amount of nitrogenated compounds (N/E index). The efficiency index is used as the controlled variable for an upper level PI controller that manipulates the dissolved oxygen (DO) set point to keep the index as close as possible to a desired level. Effect of DO manipulation is analyzed and DO operation is defined in terms of its overall effect instead of local DO dynamics.

Original language	English
Pages (from-to)	450-455
Journal	IFAC-PapersOnLine
Volume	51
Issue number	4
DOIs	https://doi.org/10.1016/j.ifacol.2018.06.136
Publication status	Published - 1 Jan 2018

Keywords

PID control
hierarchical structures
non-linear processes
performance evaluation
wastewater treatment plants

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10.1016/j.ifacol.2018.06.136

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title = "PI Dissolved Oxygen control in wastewater treatment plants for plantwide nitrogen removal efficiency",

abstract = "{\textcopyright} 2018 In this paper, a PID based hierarchical control structure is proposed to improve the overall WWTP performance. The control problem is focused on the definition of integral efficiency indices for a typical WWTP operation. The efficiency index considered in this work is the ratio between the nitrogen removed in the activated sludge process (Kgr N) and the energy (kWh) required for eliminating that amount of nitrogenated compounds (N/E index). The efficiency index is used as the controlled variable for an upper level PI controller that manipulates the dissolved oxygen (DO) set point to keep the index as close as possible to a desired level. Effect of DO manipulation is analyzed and DO operation is defined in terms of its overall effect instead of local DO dynamics.",

keywords = "PID control, hierarchical structures, non-linear processes, performance evaluation, wastewater treatment plants",

author = "Silvana Revollar and Ram{\'o}n Vilanova and Mario Francisco and Pastora Vega",

year = "2018",

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doi = "10.1016/j.ifacol.2018.06.136",

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T1 - PI Dissolved Oxygen control in wastewater treatment plants for plantwide nitrogen removal efficiency

AU - Revollar, Silvana

AU - Vilanova, Ramón

AU - Francisco, Mario

AU - Vega, Pastora

PY - 2018/1/1

Y1 - 2018/1/1

N2 - © 2018 In this paper, a PID based hierarchical control structure is proposed to improve the overall WWTP performance. The control problem is focused on the definition of integral efficiency indices for a typical WWTP operation. The efficiency index considered in this work is the ratio between the nitrogen removed in the activated sludge process (Kgr N) and the energy (kWh) required for eliminating that amount of nitrogenated compounds (N/E index). The efficiency index is used as the controlled variable for an upper level PI controller that manipulates the dissolved oxygen (DO) set point to keep the index as close as possible to a desired level. Effect of DO manipulation is analyzed and DO operation is defined in terms of its overall effect instead of local DO dynamics.

AB - © 2018 In this paper, a PID based hierarchical control structure is proposed to improve the overall WWTP performance. The control problem is focused on the definition of integral efficiency indices for a typical WWTP operation. The efficiency index considered in this work is the ratio between the nitrogen removed in the activated sludge process (Kgr N) and the energy (kWh) required for eliminating that amount of nitrogenated compounds (N/E index). The efficiency index is used as the controlled variable for an upper level PI controller that manipulates the dissolved oxygen (DO) set point to keep the index as close as possible to a desired level. Effect of DO manipulation is analyzed and DO operation is defined in terms of its overall effect instead of local DO dynamics.

KW - PID control

KW - hierarchical structures

KW - non-linear processes

KW - performance evaluation

KW - wastewater treatment plants

U2 - 10.1016/j.ifacol.2018.06.136

DO - 10.1016/j.ifacol.2018.06.136

M3 - Article

SN - 2405-8963

VL - 51

SP - 450

EP - 455

JO - IFAC-PapersOnLine

JF - IFAC-PapersOnLine

IS - 4

ER -

PI Dissolved Oxygen control in wastewater treatment plants for plantwide nitrogen removal efficiency

Abstract

Keywords

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