scholarly journals Fuzzy Logic Analysis of the Build, Capacity Build and Transfer (B-CB-T) Modality for Urban Water Supply Service Delivery in Ethiopia

Water ◽  
2019 ◽  
Vol 11 (5) ◽  
pp. 979 ◽  
Author(s):  
Samuel Godfrey ◽  
Getachew Asmare ◽  
Tamene Gossa ◽  
Michele Paba
Keyword(s):  
Fuzzy Logic ◽  
Water Supply ◽  
Financial Management ◽  
Urban Water ◽  
Urban Water Supply ◽  
Rapid Urbanization ◽  
Appropriate Behavior ◽  
Contractual Arrangements ◽  
And Performance ◽  
Fuzzy Logic Analysis

Rapid urbanization in Ethiopia is resulting in the need for alternative sustainable service models for urban water supply. Contractual arrangements to improve the functionality of urban water services in Ethiopia have included build, operate and transfer (BOT), design, build and operate (DBO), performance-based contracts (PBC) and utility development. UNICEF undertook a review of these modalities and concluded that a modified version of the BOT modality was required to both incentivize private sector engagement in urban water supply and to enhance public sector utilities. This paper describes the contractual modality developed to achieve this aim, namely an Ethiopian build, capacity build and transfer (B-CB-T) modality. This paper tests the applicability of the B-CB-T model using fuzzy logic statistical analysis and concludes that of the four tested variables (internal accountability, external accountability, operation and maintenance and financial management), the most statistically significant was the clear mandate to address complaints and maintain a positive relationship with the clients (users). This paper concludes that the B-CB-T is an effective contracting modality that should be accompanied by appropriate behavior change and social mobilization outreach to maximize tariff, billing, extension and performance of the infrastructure that is administered within the B-CB-T arrangement.

scholarly journals State-of-the-art review on the transient flow modeling and utilization for urban water supply system (UWSS) management

2020 ◽  
Vol 69 (8) ◽  
pp. 858-893 ◽  
Author(s):  
Huan-Feng Duan ◽  
Bin Pan ◽  
Manli Wang ◽  
Lu Chen ◽  
Feifei Zheng ◽  
...  
Keyword(s):  
Water Supply ◽  
Transient Flow ◽  
State Of The Art ◽  
Turbulence Models ◽  
Supply System ◽  
Water Supply System ◽  
Urban Water ◽  
Urban Water Supply ◽  
City Development ◽  
Rapid Urbanization

Abstract In the context of smart city development and rapid urbanization worldwide, urban water supply system (UWSS) has been of vital importance to this process. This paper presents a comprehensive review on the transient flow research for UWSS management. This review consists of two aspects as follows. The first aspect is about the development and progress of current transient theory, including transient flow models, unsteady friction and turbulence models, and numerical simulation methods. The other aspect is about the utilization and application of transient-based methods for effective UWSS diagnosis and management, including leakage, discrete and extended partial blockages, unknown branch, and other defects in water pipelines. A total of 228 publications have been reviewed and analyzed in this paper. In addition to the state-of-the-art progress and achievement of the research on transients, the advances and recommendations of future work in this field are also discussed for the development and management of next-generation smart UWSS in the paper.

Population Growth and Water Supply

2016 ◽  
pp. 231-252 ◽  
Author(s):  
Patrick Brandful Cobbinah ◽  
Dennis Kwadwo Okyere ◽  
Eric Gaisie
Keyword(s):  
Population Growth ◽  
Water Supply ◽  
Urban Water ◽  
Urban Water Supply ◽  
Rapid Urbanization ◽  
African Cities ◽  
Sustainable Planning ◽  
Micro Level ◽  
Urban Population Growth

With recent and expected record-breaking urban population growth in developing countries, African cities ought to undertake or revisit sustainable planning efforts necessary for managing population growth and dealing with rapid urbanization. This chapter examines how African cities are responding and adapting to rapid population growth in the area of water supply using Ghana as a case study. From a macro perspective, the chapter looks at the nature and extent of population growth and water supply in Africa, with a focus on Ghana. At the micro level, an analysis of the water supply chain in Ghanaian cities, focusing on distribution, equity and accessibility is presented. The chapter further presents a discussion on the way forward regarding urban water supply in Ghana in particular and Africa in general. The chapter concludes with key findings and directions for further research, in relation to population growth and urban water supply.

Population Growth and Water Supply

2020 ◽  
pp. 96-117 ◽  
Author(s):  
Patrick Brandful Cobbinah ◽  
Dennis Kwadwo Okyere ◽  
Eric Gaisie
Keyword(s):  
Population Growth ◽  
Water Supply ◽  
Urban Water ◽  
Urban Water Supply ◽  
Rapid Urbanization ◽  
African Cities ◽  
Sustainable Planning ◽  
Micro Level ◽  
Urban Population Growth

With recent and expected record-breaking urban population growth in developing countries, African cities ought to undertake or revisit sustainable planning efforts necessary for managing population growth and dealing with rapid urbanization. This chapter examines how African cities are responding and adapting to rapid population growth in the area of water supply using Ghana as a case study. From a macro perspective, the chapter looks at the nature and extent of population growth and water supply in Africa, with a focus on Ghana. At the micro level, an analysis of the water supply chain in Ghanaian cities, focusing on distribution, equity and accessibility is presented. The chapter further presents a discussion on the way forward regarding urban water supply in Ghana in particular and Africa in general. The chapter concludes with key findings and directions for further research, in relation to population growth and urban water supply.

Water supply and sanitation planning model: a management tool for large Brazilian cities

2003 ◽  
Vol 3 (1-2) ◽  
pp. 469-476
Author(s):  
S.R.A. Soares ◽  
R.S. Bernardes
Keyword(s):  
Water Supply ◽  
Low Income ◽  
Management Tool ◽  
Urban Water ◽  
Rapid Urbanization ◽  
Modeling Approach ◽  
Developing Cities ◽  
Starting Point ◽  
Water And Wastewater ◽  
Water Supply And Sanitation

The sanitary problems promoted by the rapid urbanization process in developing cities are usually resulted from the absence of planning, high population concentration and inadequate water and wastewater infrastructure for low income people. Because the provision and planning of water supply and is a complex task, a modeling approach was used to enhance the understanding of the process and the aspects involved. In the development of a model, not only the technical aspects were taken into account, but other aspects related to the provision of drinking water and the water resources protection were also analyzed, such as institutional, financial, socioeconomic, environmental and public health. In the modeling process two different methods of conceptualization were used to describe the urban water flow through the water and wastewater systems linked to various aspects related to their implementation in large developing cities. The urban water systems of five large metropolitan areas in Brazil were also evaluated for the complete model. It is expected that the modeling approach developed in this paper consists of a valuable methodology for water supply and sanitation planning in Brazilian cities, and other developing cities with the same characteristics. The suggested conceptual model could, at least, provide more than a starting point for a useful urban water management tool.

Groundwater pumping modeling for the sustainable management of urban water supply in Faisalabad city, Pakistan

2021 ◽  
Vol 14 (6) ◽  
Author(s):  
Abdul Khaliq ◽  
Ahsan Maqbool ◽  
Husnain Tansar ◽  
Allah Bakhsh ◽  
Muhammad Saeed ◽  
...  
Keyword(s):  
Water Supply ◽  
Sustainable Management ◽  
Urban Water ◽  
Urban Water Supply ◽  
Groundwater Pumping

scholarly journals The Drought and the Urban Water Supply

BMJ ◽  
1893 ◽  
Vol 2 (1707) ◽  
pp. 652-652
Author(s):  
G. J. Symons
Keyword(s):  
Water Supply ◽  
Urban Water ◽  
Urban Water Supply

scholarly journals Innovative approach for achieving of sustainable urban water supply system by using of solar photovoltaic energy

2017 ◽  
Vol 37 (1) ◽  
pp. 58 ◽  
Author(s):  
Jure Margeta ◽  
Bojan Đurin
Keyword(s):  
Water Supply ◽  
Urban Areas ◽  
Renewable Energy Sources ◽  
Water Reservoir ◽  
Supply System ◽  
Water Supply System ◽  
Urban Water ◽  
Solar Photovoltaic ◽  
Urban Water Supply ◽  
Pump Station

Paper describes and analyses new and innovative concept for possible integration of solar photovoltaic (PV) energy in urban water supply system (UWSS). Proposed system consists of PV generator and invertor, pump station and water reservoir. System is sized in such a manner that every his part is sized separately and after this integrated into a whole. This integration is desirable for several reasons, where the most important is the achievement of the objectives of sustainable living in urban areas i.e. achieving of sustainable urban water supply system. The biggest technological challenge associated with the use of solar, wind and other intermittent renewable energy sources RES is the realization of economically and environmentally friendly electric energy storage (EES). The paper elaborates the use of water reservoires in UWSS as EES. The proposed solution is still more expensive than the traditional and is economically acceptable today in the cases of isolated urban water system and special situations. Wider application will depend on the future trends of energy prices, construction costs of PV generators and needs for CO2 reduction by urban water infrastructure.

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