Abstract

The developments in solutions for management of urban drainage are of vital importance, as the amount of sewer water from urban areas continues to increase due to the increase of the world’s population and the change in the climate conditions. How a sewer network is structured, monitored and controlled have thus become essential factors for effcient performance of waste water treatment plants.This paper examines methods for simplified modelling and controlling a sewer network. A practical approach to the problem is used by analysing simplified design model, which is based on the Barcelona benchmark model. Due to the inherent constraints the applied approach is based on Model Predictive Control.

Highlights

  • Controlling sewer networks is a demanding and necessary task in modern society, that prevents property damages, accidents and more importantly reduces the risk of environmental pollution

  • The Barcelona benchmark model for a sewer network has been considered in this paper

  • The sewer network has been controlled by using Model Predictive Control (MPC), where it is possible to handle system constraints as well as to include prediction in the control optimization

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Summary

Introduction

Controlling sewer networks is a demanding and necessary task in modern society, that prevents property damages, accidents and more importantly reduces the risk of environmental pollution. It is important to manage the sewage water to wastewater treatment plants (WWTPs) as efficiently as possible. Many cities have combined sewer systems and the need for efficient control of sewer networks is going to increase, especially according to some predictions stating that by the year 2050, 80% of the world’s population will be living in urban areas [14]. Sewer networks are considered complex systems, as they are geographically distributed and structured for the collection of sewage and run-off water. Sewer systems are divided into two categories: separate or combined. The separate sewer system uses different pipelines for sewage and run-off water, while in the combined sewer system, sewage and run-off water are mixed together in the same pipeline.

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