1,002 Hits in 7.9 sec

An overview of the posters presented at Watermatex 2000. II. Sensor/monitoring, control and decision support systems

E. I. Volcke, L. Clement, M. Van De Steene, P. A. Vanrolleghem
2001 Water Science and Technology  
The COST benchmark for the comparison of different control strategies has been analysed. Two different teams have performed research on the control of sewers to decrease combined sewer overflows.  ...  Three posters on decision support systems have presented the methodology and architecture of specific applications.  ...  The optimisation strategy has been applied to the interceptor of the city of Laval, Canada. There is clearly a need of specific models for control applications.  ... 
doi:10.2166/wst.2001.0448 pmid:11385871 fatcat:wy6fjn6t7vervidl54mhgasvai


M. Schütze, T.B. To, U. Jumar, D. Butler
2002 IFAC Proceedings Volumes  
This paper discusses the development of control algorithms for the urban wastewater system.  ...  This system is considered to comprise of sewer system, wastewater treatment plant and receiving watercourse.  ...  SYNOPSIS has been specifically designed for the application of optimisation routines for the development of control strategies of the urban wastewater system.  ... 
doi:10.3182/20020721-6-es-1901.01457 fatcat:l6badqmdcfhtbegs536h3jsyzy

Optimisation of a fuzzy logic-based local real-time control system for mitigation of sewer flooding using genetic algorithms

S. R. Mounce, W. Shepherd, S. Ostojin, M. Abdel-Aal, A. N. A. Schellart, J. D. Shucksmith, S. J. Tait
2019 Journal of Hydroinformatics  
This paper describes a novel genetic algorithm (GA) optimisation of the FL membership functions (MFs) for the developed control algorithm.  ...  The default parameters for the control algorithm, which uses water level-based data, were derived based on domain expert knowledge and optimised by linking the control algorithm programmatically to a hydrodynamic  ...  The contents of this paper reflect the view of the authors -the Executive Agency for Small and Medium-sized Enterprises (EASME) of the European Commission is not responsible for any use that may be made  ... 
doi:10.2166/hydro.2019.058 fatcat:qa3dgsreejbxbf5ndme4zkeyem

Piece-wise linear functions-based model predictive control of large-scale sewage systems

C. Ocampo-Martinez, V. Puig
2010 IET Control Theory & Applications  
In order to take into account these phenomena and elements in the design of the control strategy, a modelling approach based on piece-wise linear functions (PWLF) is proposed and compared against a hybrid  ...  Control performance results and associated computation times of the closed-loop scheme considering both modelling approaches are compared by using a real case study based on the Barcelona sewer network  ...  might yield to the quasi-convexity of optimisation problems associated to the non-linear MPC strategy used for RTC of the sewage system [8] .  ... 
doi:10.1049/iet-cta.2009.0206 fatcat:vzhzgslzprb4nbgdt26h7ydp7q

Self-optimising control of sewer systems

M. Mauricio-Iglesias, I. Montero-Castro, A.L. Mollerup, G. Sin
2013 IFAC Proceedings Volumes  
Using a subcatchment area in the Copenhagen sewer system as a case study we demonstrate, step by step, the formulation of the self-optimising control problem.  ...  In this study, use self-optimizing control tools and apply them to the specific features of sewer systems, e.g. the continuously transient dynamics, the availability of a large number of measurements,  ...  In this contribution, we adapt and apply the ideas of self-optimising control strategies to the design of a control structure that will keep the system close to the control objective.  ... 
doi:10.3182/20131218-3-in-2045.00091 fatcat:xynlgyqjlvdu3exbhg5ktcs6jq

Centaur: Real Time Flow Control System For Flood Risk Reduction

Will Shepherd, Sonja Ostojin, Stephen Mounce, Pete Skipworth, Simon Tait
2016 Zenodo  
Thus, innovative solutions to optimise the usage of existing capacity in sewer networks are an attractive proposition.  ...  This paper outlines the control concepts and presents a methodology and results from 'virtual testing' using a modified hydrodynamic network model linked to a Fuzzy Logic control algorithm in Matlab.  ...  The authors gratefully acknowledge the support of Innovyze® for the supply of InfoWorks® CS research licences.  ... 
doi:10.5281/zenodo.400969 fatcat:w2zz5pruobamrdkqpjprnoo54m

Real time control of urban wastewater systems—where do we stand today?

Manfred Schütze, Alberto Campisano, Hubert Colas, Wolfgang Schilling, Peter A. Vanrolleghem
2004 Journal of Hydrology  
Some fundamental concepts of this approach are outlined. Particular emphasis in this paper is laid on methodologies of how to derive a control procedure for a given system.  ...  This allows information from all parts of the wastewater system to be used for control decisions and can lead to a significant improvement of the performance of the wastewater system.  ...  A variation of this approach consists in the design of local control for the actuators of the wastewater system, followed by setting up global control schemes only at those parts of the network where these  ... 
doi:10.1016/j.jhydrol.2004.08.010 fatcat:ejdawnoytfca7lapjf7eyvzibe

Performance evaluation of real time control in urban wastewater systems in practice: Review and perspective

Petra van Daal, Günter Gruber, Jeroen Langeveld, Dirk Muschalla, François Clemens
2017 Environmental Modelling & Software  
Abstract Real time control (RTC) is generally viewed as a viable method for optimising the performance of urban wastewater systems.  ...  In a case study for a combined sewer system with limited discharge to a WWTP, it is demonstrated that the successful application of RTC and the possibility to determine a significant effect is very much  ...  Finally, the proposed methodology can also be applied for determining the expected effectiveness of a designed RTC strategy if historic measurements are available.  ... 
doi:10.1016/j.envsoft.2017.06.015 fatcat:dcinuoyjazbizissiihi5xtkne

Systematic Design of Distributed Controllers for Sewer Networks

Jens Alex, Manfred Schütze, Michael Ogurek, Ulrich Jumar
2008 IFAC Proceedings Volumes  
A novel concept for a systematic design procedure of a distributed controller network for global control of a sewer network is proposed.  ...  The approach presented is expected to be easily applicable in real cases and to reduce the typical effort required for the application of automatic control to sewer networks by at least one order of magnitude  ...  The same methodology is applied for the design and evaluation of the control concepts presented in this paper.  ... 
doi:10.3182/20080706-5-kr-1001.00094 fatcat:5qafppvbljebhcfugjivvycq2q

Can smart rainwater harvesting schemes result in the improved performance of integrated urban water systems?

Kourosh Behzadian, Zoran Kapelan, Seyed Jamshid Mousavi, Amir Alani
2017 Environmental science and pollution research international  
WaterMet 2 model is used to assess the performance of the 25 UWS with smart RWH schemes. The efficiency of the proposed methodology is demonstrated through 26 modelling a real case of integrated UWS.  ...  Optimal design parameters of the smart RWH scheme is also identified to achieve 24 the best operational performance of the UWS.  ...  Introduction 34 Strategic planning of integrated urban water systems (UWS) needs to evaluate a combination of potential 35 intervention options to identify the most appropriate strategies which provide  ... 
doi:10.1007/s11356-017-0546-5 pmid:29086175 fatcat:jqavot27r5e7jmj36qgrgpiuve


Flavia Camilleri, Reza Katebi
2005 IFAC Proceedings Volumes  
This paper reports the study focused on building a Fuzzy Logic Control for integrated wastewater systems. The control involves Wastewater Treatment Plants, rivers and sewers.  ...  primary objective is to maintain a good state of the receiving waters.  ...  A simplified version of a sewer system, based on the Unit Hydrograph approach, has been also modelled to simulate wet weather conditions. Non-controlled system wet weather simulations.  ... 
doi:10.3182/20050703-6-cz-1902.02198 fatcat:rqbki4hcvrev5bw44ay2wefud4

Flexible and deterministic household water saving under water demand uncertainty: existing water distribution system and sanitary sewer perspectives

Innocent Basupi
2021 Water Science and Technology : Water Supply  
In the proposed flexible approach, a multi-objective optimisation problem was formulated and solved considering trade-offs of three objectives: (1) maximisation of the average cost savings (2) maximisation  ...  An integrated method that evaluates conflicting hydraulic performances of water distribution systems (WDSs) and sanitary sewers (SSs) considering water-saving schemes (WSSs) under fixed (deterministic)  ...  Ministry of Environment, Wildlife and Tourism. Duque, N., Duque, D. & Saldarriaga, J. 2016 A new methodology for the optimal design of series of pipes in sewer systems.  ... 
doi:10.2166/ws.2021.415 fatcat:o7upeo7h4rcxnbny3weh7aw7xu

Author Instructions

2011 Journal of the Air and Waste Management Association  
The research presented in this paper aims to demonstrate the application of predictive control to an integrated wastewater system with the use of the wiener modeling approach.  ...  The paper discusses various approaches to the modelling required for control purposes, and the use of wiener modelling for the specific application of integrated waste water control.  ...  The approach in this paper therefore does not consider optimisation of the combined sewer overflows, but instead concentrates on the treatment plant processes.  ... 
doi:10.1080/10473289.2012.650989 pmid:28097946 fatcat:xxbmxupeirgrvk2ryvifuzbc2e

A Committee Evolutionary Neural Network for the Prediction of Combined Sewer Overflows

T. R. Rosin, M. Romano, E. Keedwell, Z. Kapelan
2021 Water resources management  
The two models are trained and optimised for wet and dry weather conditions respectively and their results combined into a single response using a non-linear weighted averaging approach.  ...  This paper presents a novel bi-model committee evolutionary artificial neural network (CEANN) designed to forecast water level in a CSO chamber from 15 min to 6 h ahead using inputs of past/current CSO  ...  The number of training cycles and the coefficient of weight decay regulation are designed to prevent overfitting, by controlling the number of training cycles and applying a penalisation coefficient to  ... 
doi:10.1007/s11269-021-02780-z fatcat:cjm6u267cfeypn6ejlg27rviay

Prediction of sulphide build-up in filled sewer pipes

Amir M. Alani, Asaad Faramarzi, Mojtaba Mahmoodian, Kong Fah Tee
2014 Environmental technology  
Acknowledgements This research was funded by a grant from the UK Engineering and Physical Sciences Research Council (EPSRC), grant number EP/1032150/1 (Assessing Current State of Buried Sewer Systems  ...  Having an accurate model to predict sulphide build-up during the design phase and operation of sewers is very helpful for optimum planning of repair and maintenance strategies in sewer systems.  ...  Prediction of sulphide build-up in sewer systems would greatly benefit the development of appropriate strategies for controlling sulphide formation or H2S emissions.  ... 
doi:10.1080/09593330.2014.881403 pmid:24956763 fatcat:jz2y4ulejvex5grcfxnlqvjqqu
« Previous Showing results 1 — 15 out of 1,002 results