Proposal of a long-term water supply network to Honde Valley Ward 10
Eriksson, Jeremias (2022)
Eriksson, Jeremias
2022
Julkaisu on tekijänoikeussäännösten alainen. Teosta voi lukea ja tulostaa henkilökohtaista käyttöä varten. Käyttö kaupallisiin tarkoituksiin on kielletty.
Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi-fe202201122084
https://urn.fi/URN:NBN:fi-fe202201122084
Tiivistelmä
The thesis provides a technical framework of gravitationally fed water distribution systems in rural developing regions. The functionality of gravity-fed networks’ theory includes energy profiles in the network, pressures and head losses, and demand and supply patterns which are needed for the dimensioning of the components. The components included in network systems are reviewed and how to estimate their sizes is presented. Furthermore, basic water quality analyses with respective treatment methods for centralized systems are also reviewed.
The theory is applied to a project proposal of a gravity-fed distribution system in Honde Valley Ward 10 in Zimbabwe. A group of students from InnoEnergy (KTH, UPC) conducted a field trip in 2017 to the area where multiple topics with potential for development were analyzed, whereas the priority was given to the improvement of the sanitation and water supply situation in Ward 10. The public pipeline built in 2003 is deteriorating and only few inhabitants have access to it. Consequently, unorganized selfmade haphazardous systems have been built for individual use. The goal of the thesis is to provide a technical basis for how to develop an improved public system in the area in order to controllably manage the water resources and provide a reliable water supply to the inhabitants.
The area has been mapped remotely with an open-source software, QGIS, based on satellite pictures and interviews. The water sources have been surveyed with a topographical runoff simulation in QGIS and verified with local measurements, whereafter a new proposed distribution system has been drawn and dimensioned according to the presented theory using data provided by Zimbabwe National Water Authority (ZINWA) and Fortune Development Center (FDC). To verify the functionality of the network from a hydrological perspective the proposed system has been simulated on MIKE+ modelling software by DHI.
The result from the simulations shows that Ward 10 is technically suitable for a gravityfed water distribution network, however, some approximations have been used that need further on-site data and verifications to be more accurate. Although the area is technically suitable, there are other aspects that need to be considered. For example analysis of the state of the current pipelines and an improved maintenance and management system for the water supply infrastructure need to be developed.
The theory is applied to a project proposal of a gravity-fed distribution system in Honde Valley Ward 10 in Zimbabwe. A group of students from InnoEnergy (KTH, UPC) conducted a field trip in 2017 to the area where multiple topics with potential for development were analyzed, whereas the priority was given to the improvement of the sanitation and water supply situation in Ward 10. The public pipeline built in 2003 is deteriorating and only few inhabitants have access to it. Consequently, unorganized selfmade haphazardous systems have been built for individual use. The goal of the thesis is to provide a technical basis for how to develop an improved public system in the area in order to controllably manage the water resources and provide a reliable water supply to the inhabitants.
The area has been mapped remotely with an open-source software, QGIS, based on satellite pictures and interviews. The water sources have been surveyed with a topographical runoff simulation in QGIS and verified with local measurements, whereafter a new proposed distribution system has been drawn and dimensioned according to the presented theory using data provided by Zimbabwe National Water Authority (ZINWA) and Fortune Development Center (FDC). To verify the functionality of the network from a hydrological perspective the proposed system has been simulated on MIKE+ modelling software by DHI.
The result from the simulations shows that Ward 10 is technically suitable for a gravityfed water distribution network, however, some approximations have been used that need further on-site data and verifications to be more accurate. Although the area is technically suitable, there are other aspects that need to be considered. For example analysis of the state of the current pipelines and an improved maintenance and management system for the water supply infrastructure need to be developed.
Kokoelmat
- 222 Muu tekniikka [50]