Dissolved oxygen control of the activated sludge wastewater treatment process using model predictive control

Holenda, B.; Domokos, Endre; Rédey, Ákos; Fazakas, József

doi:10.1016/j.compchemeng.2007.06.008

Cited by 313 publications

(145 citation statements)

References 21 publications

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“…The first MOP is a dissolved oxygen control problem for an activated sludge waste-water treatment process [36]. This case study is proposed in order to evaluate the MCDM tools at the end of the MOOD procedure.…”

Section: Case Study 1: Dissolved Oxygen Control In a Waste-water Treamentioning

confidence: 99%

A Comparison of Preference Handling Techniques in Multi-Objective Optimisation for Water Distribution Systems

Reynoso-Meza

Ribeiro

Carreño-Alvarado³

2017

Water

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Abstract:Dealing with real world engineering problems, often comes with facing multiple and conflicting objectives and requirements. Water distributions systems (WDS) are not exempt from this: while cost and hydraulic performance are usually conflicting objectives, several requirements related with environmental issues in water sources might be in conflict as well. Commonly, optimisation statements are defined in order to address the WDS design, management and/or control. Multi-objective optimisation can handle such conflicting objectives, by means of a simultaneous optimisation of the design objectives, in order to approximate the so-called Pareto front. In such algorithms it is possible to embed preference handling mechanisms, with the aim of improving the pertinency of the approximation. In this paper we propose two mechanisms to handle such preferences based on the TOPSIS (Technique for Order of Preference by Similarity to Ideal Solution) and PROMETHEE (Preference Ranking Organisation METHod for Enrichment of Evaluations) methods. Performance evaluation on two benchmarks validates the usefulness of such approaches according to the degree of flexibility to capture designers' preferences.

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Section: Case Study 1: Dissolved Oxygen Control In a Waste-water Treamentioning

confidence: 99%

A Comparison of Preference Handling Techniques in Multi-Objective Optimisation for Water Distribution Systems

Reynoso-Meza

Ribeiro

Carreño-Alvarado³

2017

Water

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“…Most of the control strategies reported in literature regarding the WWTP operation improvement are based only on C and N removal (Baeza, et al, 2002;Shen et al, 2008;Holenda, et al, 2008;Cristea et al, 2011, Ostace et al, 2011, but some recent works are focusing on extending this improvement to P removal (Machado et al, 2009;Guerrero et al, 2011b).…”

Section: Introductionmentioning

confidence: 99%

Development and economic assessment of different WWTP control strategies for optimal simultaneous removal of carbon, nitrogen and phosphorus

Ostace

Baeza

Guerrero

et al. 2013

Computers & Chemical Engineering

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This paper presents the comparison of four control strategies for the A 2 /O WWTP configuration for simultaneous C, N and P removal. The control strategies: i) external COD-P control; ii) external recycle flow-P control; iii) nitrate control in the last anoxic reactor; iv) ammonia control in the last aerobic reactor, were combined with other common control loops to build different control structures and were simulated in Matlab/Simulink under different influent conditions. A systematic approach was conducted with all the strategies to assess their potential effectiveness, according to the following steps: theoretical design, setpoint optimization and, finally, a detailed comparison of the control results against a reference operation and an optimized reference scenario. The optimization of the reference operation presented a 7 % reduction of the total operational cost. The simulation results showed that some control strategies further reduced 3-7.5% the WWTP operational costs while the effluent quality is greatly improved.

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“…Biochemical reactions in the reaction tank play a vital role in the purification of sewage. The biochemical reaction process in the reaction tank requires the participation of dissolved oxygen (DO), thus the dissolved oxygen concentration will determine the degree of biochemical reactions in the sewage treatment process [1,2]. Whether from the sewage treatment process itself, or from the energy saving, energy consumption point of view, the effective control of dissolved oxygen is very important.…”

Section: Introductionmentioning

confidence: 99%

Dissolved Oxygen Control for Activated Sludge Wastewater Treatment Processes by ADRC

Li¹,

Zhang²,

Gong³

et al. 2016

Proceedings of the 2016 4th International Conference on Machinery, Materials and Information Technology Applications

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Abstract. In this article, Active Disturbance Rejection Control (ADRC) is proposed for the control of the activated sludge wastewater treatment processes. Simulation results show that the dissolved oxygen concentration can track the set value with non-overshoot and short settling time as possible by ADRC. Under disturbance, ADRC can actively estimate and compensate for external disturbances, to ensure a good control effect of dissolved oxygen concentration.

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Dissolved oxygen control of the activated sludge wastewater treatment process using model predictive control

Cited by 313 publications

References 21 publications

A Comparison of Preference Handling Techniques in Multi-Objective Optimisation for Water Distribution Systems

A Comparison of Preference Handling Techniques in Multi-Objective Optimisation for Water Distribution Systems

Development and economic assessment of different WWTP control strategies for optimal simultaneous removal of carbon, nitrogen and phosphorus

Dissolved Oxygen Control for Activated Sludge Wastewater Treatment Processes by ADRC

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