Real time control of the sewer system of boulogne billancourt - a contribution to improving the water quality of the seine

The research project ‘Real Time Control of a Combined Sewer System by Radar estimates of Precipitation’ seeks to improve the water quality of a stream by reducing quantitative and qualitative discharges of combined sewage overflow (CSO). The complex monitoring and simulation system that has been set up for control purposes is described. Two advanced real time control (ARTC) strategies have been developed. First a pollution based real time control (PBRTC) strategy, and second a water quality based real time control (WQBRTC) strategy. The PBRTC strategy is already implemented, the WQBRTC strategy will be implemented during the course of the project. For the PBRTC an off-line analysis is presented to show the effectiveness of the strategy.

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Model reduction through boundary relocation to facilitate real-time control optimisation in the integrated urban wastewater system

Water Science & Technology ◽

10.2166/wst.2002.0628 ◽

2002 ◽

Vol 45 (4-5) ◽

pp. 373-381 ◽

Cited By ~ 7

Author(s):

J. Meirlaen ◽

P.A. Vanrolleghem

Keyword(s):

Water Quality ◽

Model Reduction ◽

Real Time ◽

Treatment Plant ◽

Model Complexity ◽

Urban Wastewater ◽

Real Time Control ◽

Sewer System ◽

Time Control ◽

The Impact

Real time control is one of the possibilities to minimise the impact of the integrated urban wastewater system (sewer system and treatment plant) on the receiving water quality. Integrated control uses information about the river state to act in the sewer system or in treatment plant. In order to test and tune these integrated controllers, a simplified integrated model is needed. Even with these simplified models, the simulation times may be too long and further model reduction is needed. In this paper, dependency-structure based model reduction is proposed as a technique to further reduce model complexity. Three steps are proposed: relocation of the upstream system boundaries to just upstream of the first control point, relocation of the downstream boundaries to just downstream of the last measurement point, and third, a further model simplification based on an analysis of the sensitivity of the control actions on submodel elimination. The effect of applying the different reduction approaches on the control strategy and on the resulting river water quality is discussed on the basis of a case study of the catchment of Tielt.

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Real time control of the integrated urban wastewater system using simultaneously simulating surrogate models

Water Science & Technology ◽

10.2166/wst.2002.0066 ◽

2002 ◽

Vol 45 (3) ◽

pp. 109-116 ◽

Cited By ~ 23

Author(s):

J. Meirlaen ◽

J. Van Assel ◽

P. A. Vanrolleghem

Keyword(s):

Water Quality ◽

Real Time ◽

River Water ◽

Control Strategy ◽

Treatment Plant ◽

River Water Quality ◽

Urban Wastewater ◽

Real Time Control ◽

Time Control

The urban wastewater system (sewer and treatment plant) has a major impact on the river water quality of urban streams. To minimise this impact, real time control is a valuable option. Since the ultimate goal of any control strategy is to optimise the quality of the river system, it is useful to take pollutant immissions into account when determining the control strategy and/or the setpoints of the controller. However, a simultaneously simulating model of the complete system is needed in order to allow design and evaluation of such control strategies. In this work an integrated model of the urban wastewater system is created. This has been accomplished by implementing surrogate models of the three subsystems within a single software platform. The coupled submodels are subsequently used in a semi-hypothetical case study to optimise the resulting river water quality. An ammonia sensor in the river has been used to control the amount of water treated biologically in the treatment plant. It was shown that this integrated control could lower the peak ammonia concentration in the part of the river downstream of the treatment plant. Hence, a proof of principle has been given that the use of measurements in the river to perform control actions in the sewer system and the treatment plant is a promising option.

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Optimisation and control of the inflow to a wastewater treatment plant using integrated modelling tools

Water Science & Technology ◽

10.2166/wst.1998.0083 ◽

1998 ◽

Vol 37 (1) ◽

pp. 347-354 ◽

Cited By ~ 2

Author(s):

Ole Mark ◽

Claes Hernebring ◽

Peter Magnusson

Keyword(s):

Wastewater Treatment ◽

Real Time ◽

Wastewater Treatment Plant ◽

Treatment Plant ◽

Pilot Project ◽

Integrated Modelling ◽

Real Time Control ◽

Sewer System ◽

Time Control ◽

The Impact

The present paper describes the Helsingborg Pilot Project, a part of the Technology Validation Project: “Integrated Wastewater” (TVP) under the EU Innovation Programme. The objective of the Helsingborg Pilot Project is to demonstrate implementation of integrated tools for the simulation of the sewer system and the wastewater treatment plant (WWTP), both in the analyses and the operational phases. The paper deals with the programme for investigating the impact of real time control (RTC) on the performance of the sewer system and wastewater treatment plant. As the project still is in a very early phase, this paper focuses on the modelling of the transport of pollutants and the evaluation of the effect on the sediment deposition pattern from the implementation of real time control in the sewer system.

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Real-Time Control Implementation within a Combined Sewer System: An Operational Perspective

World Environmental and Water Resource Congress 2006 ◽

10.1061/40856(200)407 ◽

2006 ◽

Author(s):

Angela Akridge ◽

David Carty

Keyword(s):

Real Time ◽

Real Time Control ◽

Sewer System ◽

Time Control ◽

Combined Sewer ◽

Combined Sewer System ◽

Control Implementation

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Astlingen – a benchmark for real time control (RTC)

Water Science & Technology ◽

10.2166/wst.2018.172 ◽

2018 ◽

Vol 2017 (2) ◽

pp. 552-560 ◽

Cited By ~ 5

Author(s):

Manfred Schütze ◽

Maja Lange ◽

Michael Pabst ◽

Ulrich Haas

Keyword(s):

Real Time ◽

Preliminary Analysis ◽

Control Strategies ◽

Treatment Plant ◽

Drainage System ◽

Real Time Control ◽

Sewer System ◽

Time Control ◽

System 2 ◽

Water Association

Abstract This contribution serves two purposes. (1) It presents an updated version of the Astlingen example developed by the working group ‘Integral Real Time Control’ of the German Water Association (DWA), which serves as a benchmark example for the setup and evaluation of real time control strategies. As this benchmark is also intended for educational use, it demonstrates a simple RTC algorithm, illustrating the main concepts of RTC of drainage system. (2) The paper also encourages the preliminary analysis of the potential feasibility and benefit of a temporal increase of inflow to the wastewater treatment plant (WWTP) before analysing the WWTP behaviour in detail. For the present example, RTC within the sewer system alone led to almost the same reduction of overflow volume as permitting the inflow to the WWTP to be increased for 6 h within any 24 h, if at all permitted.

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