Sustainable Potable Water Systems Strengthen Rural Communities in Developing Nations

Author(s):  
Philip H. Burgi ◽  
Bruce V. Rydbeck
2005 ◽  
Author(s):  
◽  
Brett Richard Marais

The Reconstruction and Development Programme adopted by the Government of National Unity is more than a list of the services required to improve the quality of life of the majority of South Africans. It is not just a call for South Africans to unite to build a country free of poverty and misery; it is a programme designed to achieve this objective in an integrated and principled manner. Based on the strategic objectives, as highlighted in the White Paper on Water Supply and Sanitation Policy, with regard to alleviating the chronic potable water shortages in South Africa, this thesis investigates a design methodology to supply potable water through the use of wind energy. The design focuses on small rural off-grid developments where grid electricity either has not or will not reach, and where renewable energy is the only viable option. This thesis provides an overview of wind energy and presents the fundamentals of wind power calculations. It also formulates an overview of the historic and present situation with regards to potable water supply, and reflects on the need for urgent intervention. The feasibility of using wind energy to supply potable water to rural communities in South Africa is explored in a case study. The various problem areas are identified and examined and a wide range of possible solutions are recommended. A final flow chart for the system design is proposed, thus ensuring comprehensive design methodology from which future design of similar systems can be based.


2010 ◽  
Vol 3 (2) ◽  
pp. 91-99 ◽  
Author(s):  
P. Deines ◽  
R. Sekar ◽  
H. S. Jensen ◽  
S. Tait ◽  
J. B. Boxall ◽  
...  

Abstract. Microbiology in Urban Water Systems (MUWS) is an integrated project, which aims to characterize the microorganisms found in both potable water distribution systems and sewer networks. These large infrastructure systems have a major impact on our quality of life, and despite the importance of these systems as major components of the water cycle, little is known about their microbial ecology. Potable water distribution systems and sewer networks are both large, highly interconnected, dynamic, subject to time and varying inputs and demands, and difficult to control. Their performance also faces increasing loading due to increasing urbanization and longer-term environmental changes. Therefore, understanding the link between microbial ecology and any potential impacts on short or long-term engineering performance within urban water infrastructure systems is important. By combining the strengths and research expertise of civil-, biochemical engineers and molecular microbial ecologists, we ultimately aim to link microbial community abundance, diversity and function to physical and engineering variables so that novel insights into the performance and management of both water distribution systems and sewer networks can be explored. By presenting the details and principals behind the molecular microbiological techniques that we use, this paper demonstrates the potential of an integrated approach to better understand how urban water system function, and so meet future challenges.


Author(s):  
Onkar Joshi

Water is essential to life. The origin and continuation of mankind is based on water. The supply of drinking water is an important problem for the developing countries. The wooden box has a thickness of 8mm. It consists of a top cover of transparent glass with a tilt of 18°, 26° and is coated with black paint to absorb the maximum possible solar energy. The yield of the single basin solar still is very less and it increases considerably when the solar still was built with copper sheet. An analysis of single slope solar still has done on different tilt angle to optimizing study of tilt angle. They greatly improve the rate of evaporation and the rate of condensation on the cooler surface. The efficiency is higher for solar still made up of copper sheet and its output we have got 1.24 for 18° angle. The optimized tilt angle gave more efficiency than other tilt angle. The optimize water depth is 18mm for 18° angle. This cost-effective design is expected to provide the rural communities an efficient way to convert the brackish water in to potable water.


Author(s):  
Ian Towler ◽  
Ben Mills ◽  
Matthew Lofts ◽  
Brandon Mills ◽  
William Benson

<p>In developing nations, rural communities often lack year-round safe access to local markets, farms, schools, health clinics and other critical services. Bridges to Prosperity has developed standard footbridge designs and construction methodologies to successfully construct over 200 footbridges.</p><p>This paper presents a case study of the 40m long suspended footbridge constructed in the community of Rutaka in Rwanda in 2017. The normal deck construction method required the operatives to spend a significant amount of time working at height. The industry team set themselves a challenge to reduce this.</p><p>The team successfully developed and trialled a methodology for launching the deck from a platform on the river bank, improving safety and quality control. It is a significant step forward in the development of safety and construction methods for Bridges to Prosperity.</p>


2022 ◽  
pp. 368-387
Author(s):  
Trust Nhubu ◽  
Edison Muzenda ◽  
Mohamed Belaid

The management of water resources and waste is amongst the major challenges facing the majority of urban environments within developing nations due to the rapid population growth and urbanisation as well as improved lifestyles. The Greater Harare Metropolitan Province is not spared by these management challenges. This chapter proposes a number of scenarios that could be implemented in the short to medium terms to address these challenges within the GHMP from a water-waste nexus approach. The water-waste nexus approach is anticipated to significantly reduce the human health impacts and environmental impacts, specifically the water resources pollution which is responsible for the increase in cost of potable water production subsequently resulting in intermittent potable water supply in the GHMP. The study regards the recovery of energy from the waste generated in the GHMP as an integral component of the approach with the energy recovered used for water, wastewater, and waste treatment.


Energies ◽  
2019 ◽  
Vol 12 (10) ◽  
pp. 2008 ◽  
Author(s):  
Abhi Chatterjee ◽  
Daniel Burmester ◽  
Alan Brent ◽  
Ramesh Rayudu

Recent reports from international energy agencies indicate that more than a billion of the population in the world is deprived of basic electricity provisions, confined mainly to the remote communities of developing nations. Microgrids are promoted as a potential technology for electricity provisions to off-grid rural communities, but have failed to reach their value proposition in the context of rural electrification access. In view of the rampant rural electrification issues, the objective of this paper is to furnish an understanding of, and advance the knowledge into, methods to facilitate the design and development of microgrid systems for remote communities in developing countries. The methodology involves an integrative review process of an annotated bibliography to summarise past empirical or theoretical literature. As such, this research is based on evaluation attributes, and identifies the challenges and barriers for remote microgrids through an analysis of 19 case studies. The paper concludes by proposing key aspects that need to be considered for developing a framework to improve the sustainability of electricity provisions for off-grid rural communities in developing countries.


1967 ◽  
Vol 59 (8) ◽  
pp. 977-992 ◽  
Author(s):  
Malvern F. Obrecht ◽  
Marcel Pourbaix
Keyword(s):  

2003 ◽  
Vol 125 (1) ◽  
pp. 61-66 ◽  
Author(s):  
Derek K. Baker ◽  
Gary C. Vliet

In areas with hard water, scaling can reduce the reliability of solar hot water (SHW) systems. Common reliability problems associated with scaling are both mechanical (collector freeze damage, clogged passages, premature failure of pumps and valves) and thermal (efficiency degradation). A mechanistic and a mathematical scaling rate model are presented. Results from controlled experiments investigating the affect of key water chemistry and heat transfer parameters on the scaling rate are summarized. The implications of these results for designing SHW systems for scaling environments are discussed. Most importantly, indirect systems where the potable water side of the heat exchanger is integrated into the storage tank wall, such as in a wrap-around heat exchanger, are shown to be the most mechanically and thermally reliable systems for scaling environments. A new version of the software SolScale is discussed, which is intended to aid in the design of SHW systems to reduce scaling related reliability problems.


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