scholarly journals Application of Innovative Technologies for Active Control and Energy Efficiency in Water Supply Systems

Water ◽  
2020 ◽  
Vol 12 (11) ◽  
pp. 3278
Author(s):  
Armando Carravetta ◽  
Maurizio Giugni ◽  
Stefano Malavasi
Keyword(s):  
Energy Efficiency ◽  
Water Supply ◽  
Active Control ◽  
Energy Use ◽  
Water Systems ◽  
Water Supply Systems ◽  
Innovative Technologies ◽  
New Perspective ◽  
Supply Systems ◽  
Anthropic Pressure

The larger anthropic pressure on the Water Supply Systems (WSS) and the increasing concern for the sustainability of the large energy use for water supply, transportation, distribution, drainage and treatment are determining a new perspective in the management of water systems [...]

scholarly journals Energy implications of the millennium drought on urban water cycles in Southeast Australian cities

2017 ◽  
Vol 18 (1) ◽  
pp. 214-221
Author(s):  
K. L. Lam ◽  
P. A. Lant ◽  
S. J. Kenway
Keyword(s):  
Water Supply ◽  
Water Conservation ◽  
Energy Use ◽  
Water Supply Systems ◽  
Urban Water ◽  
Demand Side ◽  
Related Energy ◽  
Millennium Drought ◽  
Wide Range ◽  
Supply Systems

Abstract During the Millennium Drought in Australia, a wide range of supply-side and demand-side water management strategies were adopted in major southeast Australian cities. This study undertakes a time-series quantification (2001–2014) and comparative analysis of the energy use of the urban water supply systems and sewage systems in Melbourne and Sydney before, during and after the drought, and evaluates the energy implications of the drought and the implemented strategies. In addition, the energy implications of residential water use in Melbourne are estimated. The research highlights that large-scale adoption of water conservation strategies can have different impacts on energy use in different parts of the urban water cycle. In Melbourne, the per capita water-related energy use reduction in households related to showering and clothes-washing alone (46% reduction, 580 kWhth/p/yr) was far more substantial than that in the water supply system (32% reduction, 18 kWhth/p/yr). This historical case also demonstrates the importance of balancing supply- and demand-side strategies in managing long-term water security and related energy use. The significant energy saving in water supply systems and households from water conservation can offset the additional energy use from operating energy-intensive supply options such as inter-basin water transfers and seawater desalination during dry years.

Better water quality and higher energy efficiency by using model predictive flow control at water supply systems

2013 ◽  
Vol 62 (1) ◽  
pp. 1-13 ◽  
Author(s):  
M. Bakker ◽  
J. H. G. Vreeburg ◽  
L. J. Palmen ◽  
V. Sperber ◽  
G. Bakker ◽  
...  
Keyword(s):  
Water Quality ◽  
Energy Efficiency ◽  
Water Supply ◽  
Flow Control ◽  
Water Supply Systems ◽  
Supply Systems

scholarly journals First reported isolation of an emerging opportunistic pathogen (Elizabethkingia anophelis) from hospital water systems in Greece

2017 ◽  
Vol 16 (1) ◽  
pp. 164-170 ◽  
Author(s):  
Maria A. Kyritsi ◽  
Varvara A. Mouchtouri ◽  
Spyros Pournaras ◽  
Christos Hadjichristodoulou
Keyword(s):  
Water Supply ◽  
Water Samples ◽  
Opportunistic Pathogen ◽  
Water Systems ◽  
Water Supply Systems ◽  
Northern Greece ◽  
Active Search ◽  
Three Samples ◽  
Supply Systems

Abstract After the Elizabethkingia anophelis outbreak in Wisconsin, USA, an active search for the detection of the microorganism in hospital water systems from Central and Northern Greece was performed from June to December 2016. In total, 457 water samples from 11 hospitals were analyzed. Elizabethkingia spp. was detected in three samples collected from two hospitals, both of which are located in Northern Greece. Two of the three isolated strains were identified as Elizabethkingia anophelis. No cases of Elizabethkingia infection were reported in either hospital during 2016. This is the first reported isolation of the pathogen in water supply systems in Greece.

scholarly journals Does the source of water for piped supplies affect child health? Evidence from rural Vanuatu

2019 ◽  
Vol 9 (3) ◽  
pp. 591-595
Author(s):  
Tim Foster ◽  
Emily Rand ◽  
Erie Sami ◽  
Brieana Dance ◽  
Jeremy Kohlitz ◽  
...  
Keyword(s):  
Water Supply ◽  
Water Source ◽  
Service Level ◽  
Water Systems ◽  
Global Network ◽  
Water Supply Systems ◽  
Piped Water ◽  
Generous Support ◽  
Year 2000 ◽  
Supply Systems

Abstract Piped water systems are considered to provide the highest service level for drinking water supplies; however, global monitoring of safe water access pays little attention to the type of water source that piped systems draw upon, even if the water is not treated prior to distribution. This study sought to understand whether the source of water for untreated piped supplies influences the prevalence of diarrhoea among children in rural Vanuatu. The analysis was based on a dataset integrating a Demographic and Health Survey and a nationwide water supply inventory. After adjusting for a range of potential confounders, the results revealed a significant association between diarrhoea and the type of water source supplying a piped system. Compared with borehole-supplied piped systems, spring-fed piped systems were significantly associated with increased odds of diarrhoea (adjusted odds ratio [AOR] 5.8, 95% confidence interval [CI] 1.1–31, p = 0.040). No significant association between diarrhoea and piped systems drawing on surface water was observed. Increased odds of diarrhoea were significantly associated with water supply systems constructed prior to the year 2000 (AOR 4.9, 95% CI 1.9–13, p = 0.001). The results highlight the need for improvements in spring protection as well as ongoing maintenance and periodic renewal of water supply infrastructure. This article has been made Open Access thanks to the generous support of a global network of libraries as part of the Knowledge Unlatched Select initiative.

scholarly journals Multi-objective optimization of energy and greenhouse gas emissions in water pumping and treatment

2020 ◽  
Vol 82 (12) ◽  
pp. 2745-2760
Author(s):  
Iliana Cardenes ◽  
Afreen Siddiqi ◽  
Mohammad Mortazavi Naeini ◽  
Jim W. Hall
Keyword(s):  
Energy Consumption ◽  
Water Supply ◽  
Greenhouse Gas Emissions ◽  
Greenhouse Gas ◽  
Energy Use ◽  
Water Supply Systems ◽  
Urban Water Supply ◽  
Multi Objective Optimization ◽  
Gas Emissions ◽  
Supply Systems

Abstract A large part of operating costs in urban water supply networks is usually due to energy use, mostly in the form of electricity consumption. There is growing pressure to reduce energy use to help save operational costs and reduce carbon emissions. However, in practice, reducing these costs has proved to be challenging because of the complexity of the systems. Indeed, many water utilities have concluded that they cannot practically achieve further energy savings in the operation of their water supply systems. This study shows how a hybrid linear and multi-objective optimization approach can be used to identify key energy consumption elements in a water supply system, and then evaluate the amount of investment needed to achieve significant operational gains at those points in the supply network. In application to the water supply system for the city of London, the method has shown that up to 18% savings in daily energy consumption are achievable. The optimal results are sensitive to discount rate and the financial value placed on greenhouse gas emissions. Valuation of greenhouse gas emissions is necessary to incentivise high levels of energy efficiency. The methodology can be used to inform planning and investment decisions, with specific focus on reducing energy consumption, for existing urban water supply systems.

scholarly journals Microgeração de energia com uso de bomba funcionando como turbina (BFT) em sistemas de abastecimento de água (SAA)

Revista DAE ◽  
2019 ◽  
Vol 221 (68) ◽  
pp. 53-59
Author(s):  
Silvia Fernanda Paffrath
Keyword(s):  
Water Supply ◽  
Energy Use ◽  
Excess Pressure ◽  
Water Supply Systems ◽  
Energy Costs ◽  
Dissipation Of Energy ◽  
Theoretical System ◽  
Pumping Stations ◽  
Favorable Conditions ◽  
Supply Systems

Resumo Cada vez mais têm sido estudadas formas de minimizar gastos com energia e/ou de obter formas alternativas de geração, principalmente pela diminuição de oferta hídrica em diversos locais. Nos sistemas de abastecimento de água, são altos os gastos com energia, principalmente nas estações elevatórias. Em sistemas que fazem a distribuição de água por gravidade, não é rara a utilização de válvulas redutoras de pressão em pontos especí- ficos em que é necessária essa redução para garantir condições favoráveis de transporte de água na tubulação. Nesse sentido, ocorre dissipação de energia que poderia ser aproveitada no próprio sistema. Tendo em vista esse aproveitamento energético, esse estudo tem como objetivo determinar de forma teórica a potência gerada por uma bomba funcionando como turbina em locais onde há excedente de pressão, tomando por base dados de um sistema teórico de abastecimento de água de município de pequeno porte. Os resultados mostram que a alternativa é tecnicamente viável, gerando 2,2 KW de potência e 16,4 MW/ano de energia, que poderia ser uti- lizada no próprio sistema, em pontos onde seria necessário bombeamento, seja na captação ou na própria rede de abastecimento, em transição de zonas baixas para altas. Palavras-chave: Eficiência energética. Bomba funcionando como turbina (BFT). Abstract It has increasingly been studied ways to minimize energy costs and to obtain alternative forms of generation, mainly by the reduction of water supply in various locations. In water supply systems, energy costs are high, especially in pumping stations. In systems that make the distribution of water using gravity, it is not uncommon to use pres- sure reducing valves at specific points at which this reduction is necessary to ensure favorable conditions of water transport in the pipe. In this sense, there is dissipation of energy that could be used in the system itself. In view of this energy use, this study aims to determine theoretically the power generated by a pump functioning as turbine in places where there is excess pressure, based on data from a theoretical system of a small town water supply. From the results, the alternative proved to be technically feasible, with power generated at 2.2 KW and energy at 16.4 MW/year, which could be used in the system itself, at points where pumping would be required, either on capture or in the supply network, in transition from low to high areas. Keywords: Energy efficiency. pump functioning as turbine.

Modeling of hydraulic and energy efficiency indicators for water supply systems

2015 ◽  
Vol 48 ◽  
pp. 540-557 ◽  
Author(s):  
Mateus Ricardo Nogueira Vilanova ◽  
José Antônio Perrella Balestieri
Keyword(s):  
Energy Efficiency ◽  
Water Supply ◽  
Water Supply Systems ◽  
Supply Systems ◽  
Efficiency Indicators
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