Leakage management in the urban water supply system of Ghana: estimation and detection modeling:
Saved in:
| Main Author: | |
|---|---|
| Format: | Thesis Book |
| Language: | English |
| Published: |
München
DIV Deutscher Industrieverlag GmbH
2015
|
| Series: | Stuttgarter Berichte zur Siedlungswasserwirtschaft
Band 227 |
| Subjects: | |
| Online Access: | Inhaltsverzeichnis |
| Physical Description: | XXIII, 183, XXXVIII, XXVI Seiten Illustrationen, Diagramme, Karten |
| ISBN: | 9783835672918 |
Staff View
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Record in the Search Index
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| adam_text | Titel: Leakage management in the urban water supply system of Ghana: estimation and detection modeling
Autor: Amoatey, Peace Korshiwor
Jahr: 2015
Table of Content
Table of Contents
Acknowledgment.......................................................................................................I
Dedication................................................................................................................Ill
Summary..................................................................................................................IV
Zusammenfassung................................................................................................VIII
Table of Contents...................................................................................................XIII
List of Figures........................................................................................................XVI
List of Tables..........................................................................................................XIX
List of Abbreviations..............................................................................................XX
1.0 Introduction......................................................................................................1
1.1 The Challenge of Reducing Leakage in Water Networks.............................1
1.2 The Necessity of Reducing Leakage in Water Networks..............................2
1.3 Successful Water Loss Projects and the Lessons Learnt.............................3
1.4 Water Situation in Ghana.............................................................................5
1.4.1 Background of the Water Sector in Ghana..........................................6
1.4.2The Non-Revenue-Water (NRW) Situation in Ghana..........................9
1.5 Tools for Water Loss Management.............................................................10
1.6 Research Objectives...................................................................................11
1.7 Outline of the Dissertation..........................................................................12
2 Theoretical Background................................................................................14
2.1 introduction.................................................................................................14
2.1.1 The Standard Water Balance............................................................14
2.1.2Overview of Leakage Management...................................................15
2.1,3Leakage Awareness, Location and Repair........................................16
2.1.4 Pillars of Leakage Management........................................................17
2.1.5 Hydraulic Zoning of Network Area.....................................................21
2.2 Principles of Leakage Detection in Water Networks...................................22
2.2.1 Acoustic Techniques.........................................................................22
2.2.2 Non-acoustic Techniques..................................................................24
2.3 Leakage Estimation in Water Networks......................................................24
2.3.1 Tools and Software for Leakage Estimation......................................25
2.3.2 Methods of Leakage Estimation........................................................29
2.4 Sensitivity and Uncertainty Analysis...........................................................35
2.4.1 Uncertainty in NRW Estimation.........................................................36
2.4.2 Sensitivity Analysis in Leakage Estimation........................................38
2.4.3 Complementarity of the Leak Estimation Methods............................39
2.4.4 Parameters for Leakage Estimation..................................................40
2.5 Performance Indicators for Urban Water Networks....................................46
2.5.1 IWA Key Performance indicators.......................................................47
XIII
Table of Content
2 5 2Additional Key Performance indicators..............................................49
2.5.3 Benchmarking of Water Utilities........................................................51
2.6 Leakage Detection Modeling Methods.......................................................53
2.6.1 Direct Transient Method (DTM).........................................................54
2.6.2 Inverse Transient Analysis (ITM).......................................................55
2.6.3 Bayesian Identification Method (BIM)................................................55
2.6.4 Pattern Recognition Methods (PRMs)...............................................56
2.7 Leakage Estimation and Detection Modeling: Gaps Identified...................59
2.8 Inverse Monte Carlo Modeling....................................................................61
3 Research Methodology..................................................................................63
3.1 Introduction.................................................................................................63
3.2 Research Framework.................................................................................63
3.3 Description of Case Study Water Network.................................................65
3.4 Design and Calibration of Network Hydraulic Model (NHM).......................67
3.5 Research Design: Data Collection-Field Measurements............................67
3.6 Additional Data...........................................................................................71
3.7 Leakage Estimation Methodology..............................................................72
3.7.1 Customer Night Use (QCNU)............................................................73
3.7.2 Leakage Exponent N1.......................................................................74
3.7.3Hour Day Factor (HDF).....................................................................75
3.8 Uncertainty and Sensitivity Analysis...........................................................75
3.8.1 Uncertainty in NRW Estimation.........................................................76
3.8.2 Sensitivity of Leakage Estimation......................................................77
3.9 Performance Assessment System for Water Utilities..................................77
3.9.1 Key Performance Indicators..............................................................77
3.9.2 Performance Assessment System (PAS)..........................................78
3.10 Methodology: Inverse Modeling of Simulated Leaks.........................79
3.11 Application of Inverse Modeling to Case Study Water Network.........82
4 Results, Analysis and Discussion................................................................85
4.1 Introduction.................................................................................................85
4.2 Description of Measured and Obtained Data..............................................86
4.2.1 Analysis of Non-Revenue Water (NRW) and Deductions..................86
4.2.2 Uncertainty Analysis of Non-Revenue Water....................................89
4.2.3 Minimum Night Flow (MNF) Measurements......................................90
4.2.4 Leakage Exponent and Hour-Day Factor.........................................104
4.2.5Customer Night Use (Qcnu)..............................................................105
4.3 Estimation of Leakage in Case Study Water Network...............................106
4.3.1 Top-Down Water Balance................................................................107
4.3.2 Bottom-Up Water Balance................................................................111
4.3.3Component Analysis of Leakage......................................................116
4.3.4 Key Performance Indicators.............................................................118
XIV
Table of Content
4.4 Summary of Findings: Leakage Estimation Method..................................119
4.5 Limitations of Leakage Estimation Method................................................121
4.6 Modeling Leak Detection...........................................................................122
4.6.1 Modeling Leak Detection of Single leaks..........................................122
4.6.2 Leak Detection Modeling of Two Leaks............................................129
4.7 Summary of Findings: Leak Detection Modeling.......................................140
4.8 Limitations of the Developed Model..........................................................142
5 Conclusion and Outlook...............................................................................143
5.1 Introduction................................................................................................143
5.2 Leakage Estimation...................................................................................144
5.3 Leak Detection Modeling...........................................................................146
5.4 Outlook......................................................................................................149
6 Recommendations........................................................................................151
6.1 Introduction................................................................................................151
6.2 Specific Recommendations.......................................................................151
6.2.1 Zonal Water Balance........................................................................151
6.2.2Leakage Management......................................................................151
6.2.3Apparent Losses..............................................................................152
6.3 General Recommendations for Urban Water Supply in Ghana.................152
6.3.1 Policy-Driven Data Collection...........................................................152
6.3.2 Injecting Competition in GWCL Operations......................................153
6.3.3 Integrating Tools for Leakage Management.....................................156
6.3.4 Moving towards Smart Water Network.............................................158
6.4 Performance Assessment System (PAS) for Ghanaian Water Utilities......160
7 References.....................................................................................................163
8 Appendices........................................................................................................I
XV
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| author | Amoatey, Peace Korshiwor |
| author_GND | (DE-588)1102253677 |
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| dewey-sort | 3676.042 |
| dewey-tens | 670 - Manufacturing 620 - Engineering and allied operations |
| discipline | Maschinenbau / Maschinenwesen Allgemeines Werkstoffwissenschaften / Fertigungstechnik Umwelt |
| format | Thesis Book |
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| spelling | Amoatey, Peace Korshiwor Verfasser (DE-588)1102253677 aut Leakage management in the urban water supply system of Ghana: estimation and detection modeling Peace Korshiwor Amoatey München DIV Deutscher Industrieverlag GmbH 2015 XXIII, 183, XXXVIII, XXVI Seiten Illustrationen, Diagramme, Karten txt rdacontent n rdamedia nc rdacarrier Stuttgarter Berichte zur Siedlungswasserwirtschaft Band 227 Dissertation Universität Stuttgart 2015 Leck (DE-588)4167086-3 gnd rswk-swf Wasserverlust (DE-588)4131147-4 gnd rswk-swf Wasserleitung (DE-588)4064751-1 gnd rswk-swf Management (DE-588)4037278-9 gnd rswk-swf Trinkwasser (DE-588)4060916-9 gnd rswk-swf Ghana (DE-588)4020949-0 gnd rswk-swf (DE-588)4113937-9 Hochschulschrift gnd-content Ghana (DE-588)4020949-0 g Wasserleitung (DE-588)4064751-1 s Leck (DE-588)4167086-3 s Wasserverlust (DE-588)4131147-4 s Management (DE-588)4037278-9 s Trinkwasser (DE-588)4060916-9 s DE-604 Forschungs- und Entwicklungsinstitut für Industrie- und Siedlungswasserwirtschaft sowie Abfallwirtschaft Sonstige (DE-588)1002311-2 oth Stuttgarter Berichte zur Siedlungswasserwirtschaft Band 227 (DE-604)BV000003479 227 HBZ Datenaustausch application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=028997733&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis |
| spellingShingle | Amoatey, Peace Korshiwor Leakage management in the urban water supply system of Ghana: estimation and detection modeling Stuttgarter Berichte zur Siedlungswasserwirtschaft Leck (DE-588)4167086-3 gnd Wasserverlust (DE-588)4131147-4 gnd Wasserleitung (DE-588)4064751-1 gnd Management (DE-588)4037278-9 gnd Trinkwasser (DE-588)4060916-9 gnd |
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| title | Leakage management in the urban water supply system of Ghana: estimation and detection modeling |
| title_auth | Leakage management in the urban water supply system of Ghana: estimation and detection modeling |
| title_exact_search | Leakage management in the urban water supply system of Ghana: estimation and detection modeling |
| title_full | Leakage management in the urban water supply system of Ghana: estimation and detection modeling Peace Korshiwor Amoatey |
| title_fullStr | Leakage management in the urban water supply system of Ghana: estimation and detection modeling Peace Korshiwor Amoatey |
| title_full_unstemmed | Leakage management in the urban water supply system of Ghana: estimation and detection modeling Peace Korshiwor Amoatey |
| title_short | Leakage management in the urban water supply system of Ghana: estimation and detection modeling |
| title_sort | leakage management in the urban water supply system of ghana estimation and detection modeling |
| topic | Leck (DE-588)4167086-3 gnd Wasserverlust (DE-588)4131147-4 gnd Wasserleitung (DE-588)4064751-1 gnd Management (DE-588)4037278-9 gnd Trinkwasser (DE-588)4060916-9 gnd |
| topic_facet | Leck Wasserverlust Wasserleitung Management Trinkwasser Ghana Hochschulschrift |
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