Water Supply Network District Metering

Theory and Case Study

verfasst von: Armando Di Nardo, Michele Di Natale, Anna Di Mauro

Verlag: Springer Vienna

Buchreihe : CISM International Centre for Mechanical Sciences

Enthalten in: Springer Professional "Wirtschaft+Technik" , Springer Professional "Technik" , Springer Professional "Wirtschaft"

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Über dieses Buch

The management of a water supply network can be substantially improved defining permanent sectors or districts that enhances simpler water loss detection and pressure management.

However, the water network partitioning may compromise water system performance, since some pipes are usually closed to delimit districts in order not to have too many metering stations, to decrease costs and simplify water balance. This may reduce the reliability of the whole system and not guarantee the delivery of water at the different network nodes. In practical applications, the design of districts or sectors is generally based on empirical approaches or on limited field experiences.

The book proposes a design support methodology, based on graph theory principles and tested on real case study. The described methodology can help water utilities, professionals and researchers to define the optimal districts or sectors of a water supply network.

Inhaltsverzeichnis

Frontmatter

1. Water Leakage Management

Abstract

The greatest problem for a water network - and surely the most important from an economic and social standpoint - is related to water leakages. In many areas of the world more than one third of the resource, which is first extracted, then treated to improve its organoleptic qualities to make it drinkable, and then conveyed to urban water networks, is lost before it reaches end users.

Armando Di Nardo, Michele Di Natale, Anna Di Mauro

2. Water District Metering policy and practice

Abstract

Water supply network District Metering (WDM), a method developed in England [104] and already implemented in many countries, as illustrated below, aims at:

a) simplifying network water balance calculation by monitoring night flows in each district in order to detect the presence of unreported bursts and to enable leakage detection and location (using acoustic methods, step test, etc.);

b) carrying out pressure management in order to reduce hydraulic head and water leakage;

c) improving water system management with continuous monitoring of district hydraulic data in order to prevent water shortage and to plan better maintenance operations.

Armando Di Nardo, Michele Di Natale, Anna Di Mauro

3. Design Support Methodology

Abstract

This study proposes a Design Support Methodology (DSM) to define Water District Metering compatibly with water network performance and to determine the optimal setting pressure values to be assigned to valves during the various operational conditions in order to carry out pressure management. In this chapter two method are illustrated: the first, based on techniques borrowed from graph theory [7, 8], that allows several different network configurations to be analysed and compared by means of some performance indices; the second, based on genetic algorithms, that allows description of a non-linear optimization problem in order to define valve optimal settings.

Armando Di Nardo, Michele Di Natale, Anna Di Mauro

4. Case study: Monterusciello network

Abstract

As in many other countries also in Italy the leakage problem has been long known [63, 61].For the purpose of damage limitation, the Ministerial Decree for Public Works no. 99 was issued on 8 January 1997, which represents the first, reliable step, to deal with the control of wastes in the management of water resources, with special focus on urban distribution networks [5].

Armando Di Nardo, Michele Di Natale, Anna Di Mauro

Backmatter

Titel: Water Supply Network District Metering
verfasst von: Armando Di Nardo
Michele Di Natale
Anna Di Mauro
Verlag: Springer Vienna
Electronic ISBN: 978-3-7091-1493-3
Print ISBN: 978-3-7091-1492-6
DOI: https://doi.org/10.1007/978-3-7091-1493-3