Energy optimization of the urban drainage system by integrated real-time control during wet and dry weather conditions

Conventional UDS models are mechanistic which though appropriate for design purposes are less well suited to real-time control because they are slow running, difficult to calibrate, difficult to re-calibrate in real time and have trouble handling noisy data. At Salford University a novel hybrid of dynamic and empirical modelling has been developed, to combine the speed of the empirical model with the ability to simulate complex and non-linear systems of the mechanistic/dynamic models. This paper details the ‘knowledge acquisition module’ software and how it has been applied to construct a model of a large urban drainage system. The paper goes on to detail how the model has been linked with real-time radar data inputs from the MARS c-band radar.

Download Full-text

An integrated software architecture for the pollution-based real-time control of urban drainage systems

Journal of Hydroinformatics ◽

10.2166/hydro.2021.149 ◽

2021 ◽

Author(s):

Luis Romero ◽

Bernat Joseph-Duran ◽

Congcong Sun ◽

Jordi Meseguer ◽

Gabriela Cembrano ◽

...

Keyword(s):

Software Architecture ◽

Real Time ◽

Process Model ◽

Drainage System ◽

Urban Drainage ◽

Real Time Control ◽

Simulation And Optimization ◽

Management Scenario ◽

Time Control ◽

Integrated Software

Abstract This paper presents a complete methodology for the development of an integrated software architecture, which can achieve a closed-loop application between the integrated real-time control (RTC) and a virtual reality simulation for the urban drainage system (UDS). Quality measurements are considered during the simulation and optimization process. Model predictive control (MPC) and rule-based control (RBC) are the two main RTC methods embedded in this architecture. The proposed integration environment allows the different software components to efficiently and effectively communicate and work in a system-wide way, as well as to execute all the necessary steps regarding input parameters management, scenario configuration and results extraction. The proposed approaches are implemented into a pilot based on the Badalona UDS (Spain). Results from different scenarios with individual control approaches and rain episodes are evaluated and discussed.

Download Full-text

A Model to Assess the Performance of Controlled Urban Drainage Systems

Water Science & Technology ◽

10.2166/wst.1994.0692 ◽

1994 ◽

Vol 29 (1-2) ◽

pp. 437-444 ◽

Cited By ~ 3

Author(s):

Fons Nelen

Keyword(s):

Real Time ◽

Storage Capacity ◽

Drainage System ◽

Urban Drainage ◽

Real Time Control ◽

Drainage Systems ◽

Time Control ◽

Controlled Systems ◽

Urban Drainage Systems ◽

The Difference

The LOCUS modelling package, which has been designed to assess the performance of an urban drainage system that is controlled in real time is presented. Besides the simulation of 'optimal' controlled systems, LOCUS offers the possibility to simulate local (or static) controlled systems as well (i.e. the present way of operation of most urban drainage systems). Since an identical system description is used in both cases, the difference between the results is only due to the way the system is operated and hence the effects of real time control can be quantified by comparing the results. The use of the model is illustrated by a simple example, which shows that it is worth investigating the potential of real time control before constructing extra storage in the system. For a small fictitious system with limited storage capacity at the downstream section it is shown that this potential is comparable to increasing the storage capacity by 1.5 mm at this particular section.

Download Full-text

Advanced Integrated Real-Time Control of Combined Urban Drainage Systems using MPC: Badalona Case Study

10.29007/27gp ◽

2018 ◽

Author(s):

Congcong Sun ◽

Bernat Joseph-Duran ◽

Gabriela Cembrano ◽

Vicenç Puig ◽

Jordi Meseguer

Keyword(s):

Real Time ◽

Wastewater Treatment Plants ◽

Drainage System ◽

Urban Drainage ◽

Real Time Control ◽

Combined Sewer Overflows ◽

Control Approach ◽

Time Control ◽

Sewer Network ◽

First Results

Combined urban drainage system (CUDS) collect both wastewater and raining water through sewer networks to wastewater treatment plants (WWTP) before releasing to the environment. During storm weather, rain and wastewater can overload the capacity of the CUDS and/or the WWTPs, producing combined sewer overflows (CSO). In order to improve the management efficiency of CUDS, advanced real-time control (RTC) of detention and diversion infrastructures in the sewer systems has been proven to contribute to reducing the CSO volumes. This work considers the integrated RTC of sewer network and WWTPs based on model predictive control (MPC) and taking into account the water quality as well as quantity, with the objective of minimizing the environmental impact of CSO on receiving waters. The control approach is validated using a real pilot Badalona sewer network in Spain. The first results, discussion and conclusions are also provided.

Download Full-text

Modifications of rainfall runoff and decision finding models for on-line simulation in real time control

Water Science & Technology ◽

10.2166/wst.1999.0477 ◽

1999 ◽

Vol 39 (9) ◽

pp. 201-207

Author(s):

Andreas Cassar ◽

Hans-Reinhard Verworn

Keyword(s):

Real Time ◽

Urban Drainage ◽

Rain Event ◽

Rainfall Runoff ◽

Real Time Control ◽

Design Storm ◽

Time Control ◽

Timing Data ◽

On Line ◽

Rainfall Runoff Model

Most of the existing rainfall runoff models for urban drainage systems have been designed for off-line calculations. With a design storm or a historical rain event and the model system the rainfall runoff processes are simulated, the faster the better. Since very recently, hydrodynamic models have been considered to be much too slow for real time applications. However, with the computing power of today - and even more so of tomorrow - very complex and detailed models may be run on-line and in real time. While the algorithms basically remain the same as for off-line simulations, problems concerning timing, data management and inter process communication have to be identified and solved. This paper describes the upgrading of the existing hydrodynamic rainfall runoff model HYSTEM/EXTRAN and the decision finding model INTL for real time performance, their implementation on a network of UNIX stations and the experiences from running them within an urban drainage real time control project. The main focus is not on what the models do but how they are put into action and made to run smoothly embedded in all the processes necessary in operational real time control.

Download Full-text

Combined Application of Real-Time Control and Green Technologies to Urban Drainage Systems

Water ◽

10.3390/w12123432 ◽

2020 ◽

Vol 12 (12) ◽

pp. 3432

Author(s):

Margherita Altobelli ◽

Sara Simona Cipolla ◽

Marco Maglionico

Keyword(s):

Real Time ◽

Water Bodies ◽

Water Volume ◽

Urban Drainage ◽

Real Time Control ◽

Green Technologies ◽

Drainage Systems ◽

Combined Application ◽

Time Control ◽

Urban Drainage Systems

The increase in waterproof surfaces, a typical phenomenon of urbanization, on the one hand, reduces the volume of rainwater that naturally infiltrates the subsoil and, on the other, it determines the increase in speeds, flow rates, and outflow volume surface; at the same time, it causes a qualitative deterioration of the water. This study researched the optimal management of urban drainage systems via the combined application of real-time control and green technologies. A hydraulic model of the sewer system of the suburbs of Bologna (Italy) was set up using the Environmental Protection Agency (EPA) Storm Water Management Model (SWMM) to evaluate the reduction in water volume and the masses of pollutants discharged in water bodies. The combined application of these technologies allows significantly reducing both the pollutants released into the receiving water bodies and the overflow volumes, while optimizing the operation of the treatment plants. Green technologies cause an average reduction equal to 45% in volume and 53% of total suspended solids (TSS) sent to the receiver. The modeled cases represent only some of the possible configurations achievable on urban drainage systems; the combined use of different solutions could lead to further improvements in the overall functioning of the drainage system.

Download Full-text

Effects of real time control of sewer systems on treatment plant performance and receiving water quality

Water Science & Technology ◽

10.2166/wst.2002.0083 ◽

2002 ◽

Vol 45 (3) ◽

pp. 229-237 ◽

Cited By ~ 2

Author(s):

T. Frehmann ◽

A. Niemann ◽

P. Ustohal ◽

W.F. Geiger

Keyword(s):

Real Time ◽

Treatment Plant ◽

Drainage System ◽

Control Measures ◽

Plant Performance ◽

Integral Model ◽

Real Time Control ◽

Time Control ◽

The Impact ◽

Receiving Water

Four individual mathematical submodels simulating different subsystems of urban drainage were intercoupled to an integral model. The submodels (for surface runoff, flow in sewer system, wastewater treatment plant and receiving water) were calibrated on the basis of field data measured in an existing urban catchment investigation. Three different strategies for controlling the discharge in the sewer network were defined and implemented in the integral model. The impact of these control measures was quantified by representative immission state-parameters of the receiving water. The results reveal that the effect of a control measure may be ambivalent, depending on the referred component of a complex drainage system. Furthermore, it is demonstrated that the drainage system in the catchment investigation can be considerably optimised towards environmental protection and operation efficiency if an appropriate real time control on the integral scale is applied.

Download Full-text