Informations et ressources scientifiques
sur le développement des zones arides et semi-arides

Accueil du site → Master → Pays Bas → 2020 → The impact of non-revenue water on reduction of intermittent water supply in Bahir Dar, Ethiopia

UNESCO-IHE Institute for Water Education, Delft (2020)

The impact of non-revenue water on reduction of intermittent water supply in Bahir Dar, Ethiopia

Miskir, Semachew Ayele

Titre : The impact of non-revenue water on reduction of intermittent water supply in Bahir Dar, Ethiopia

Auteur : Miskir, Semachew Ayele

Université de soutenance : UNESCO-IHE Institute for Water Education, Delft

Grade : Master of Science (MS) 2020

Résumé partiel
The intermittent water supply system is a piped water supply system that delivers water less than 24hr per day (Charalambous & Laspidou, 2017). It can be categorised into three different categories based on quantity, frequency and duration of the water service. Urban water supply systems aren’t designed to supply water intermittently but continuously. Water scarcity, population growth, NRW, power outage, poor hydraulic infrastructure and poor governance are some of the factors that force the utility to switch from a continuous regime to intermittent. In many developing countries, NRW is the main factor or cause that forces the utility to switch into intermittent supply system. The impact of the NRW on the reduction of intermittency and bottlenecks are discussed in this thesis. The day to day water technology improvement comes up with smart water meter reading tools such as mobile water operator (MWO) which helps to collect good quality data for water balance analyses and water distribution modelling. This data can be used to feed hydraulic models, which offer a good tool to assess the network performance ; however under intermittent water supply conditions accurate hydraulic simulations become challenging. This research deals in-depth in a real-life context about the water supply in the case of Bahir Dar, Ethiopia. Field work has been conducted in two different ways (interviews and field measurement). The field work covered water production, consumption, service reservoir and tank dimensions, demand patterns, construction and Mobile water operator (MWO) application. In the interview part, customers and the water supply utility experts were the sources of more information about the cause of intermittent supply in the study area. The water supply network model was adapted from the utility and used to investigate whether the classical model approach will work for the study area

Sujets  : intermittent water supply non-revenue water water supply systems water scarcity case study Ethiopia

Présentation

Page publiée le 22 avril 2021