Energy Recovery Using Micro-Hydropower Technology in Water Supply Systems: The Case Study of the City of Fribourg

Due to the accelerated industrial and urbanization development, climate change, and increasing populations and life quality expectations, the issue of drinking water shortage has raised much public awareness. The desalination system has been widely applied to accommodate the growing demand for clean water resources despite the continuous concerns about its relatively higher energy consumption and environmental footprints. This research conducted a case study in the Tampa Bay Regional Surface Water Treatment Plant and Tampa Bay Seawater Desalination Plant in Florida, U.S. It analysed the performance and environmental impacts of conventional and desalination water supply systems on three sides: energy consumption, carbon footprint, and solid waste. Potential negative effects of both water supply systems are generally associated with surface water ecology, groundwater aquifers, coastal environment, and marine organisms. Various environmental impact mitigation plans have been proposed to prevent or restore the detriments caused by carbon dioxide emissions, plant construction, and concentrated brine discharge. Due to the deficiency in freshwater resources, desalination technology is more promising through proper regulations and regional sustainable development.

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Minimization of losses in water supply systems: strategy definition in a Portuguese case study

Desalination and Water Treatment ◽

10.5004/dwt.2009.146 ◽

2009 ◽

Vol 2 (1-3) ◽

pp. 24-29 ◽

Cited By ~ 1

Author(s):

B. Machado ◽

T. Carvalho ◽

C. Cupido ◽

M.C. Almeida ◽

H. Alegre

Keyword(s):

Water Supply ◽

Water Supply Systems ◽

Supply Systems

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A MILP-based operational decision-making methodology for demand-side management applied to desalinated water supply systems supported by a solar photovoltaic plant: A case study in agricultural industry

Journal of Cleaner Production ◽

10.1016/j.jclepro.2021.130123 ◽

2021 ◽

pp. 130123

Author(s):

Luis Vergara-Fernandez ◽

Maichel M. Aguayo ◽

Luis Moran ◽

Carlos Obreque

Keyword(s):

Decision Making ◽

Water Supply ◽

Water Supply Systems ◽

Solar Photovoltaic ◽

Demand Side ◽

Agricultural Industry ◽

Operational Decision Making ◽

Photovoltaic Plant ◽

Supply Systems

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Rehabilitation Strategy for Water Supply Systems in Developing Countries Case Study: IWRM Oasis Béni Abbès, Algeria

Water Distribution Systems Analysis 2008 ◽

10.1061/41024(340)14 ◽

2009 ◽

Cited By ~ 1

Author(s):

P. Klingel ◽

J. Deuerlein

Keyword(s):

Developing Countries ◽

Water Supply ◽

Water Supply Systems ◽

Supply Systems ◽

Rehabilitation Strategy

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Frequency pressure regulation in water supply systems

Water Science & Technology Water Supply ◽

10.2166/ws.2013.088 ◽

2013 ◽

Vol 13 (4) ◽

pp. 896-905 ◽

Cited By ~ 2

Author(s):

Ivan Halkijevic ◽

Zivko Vukovic ◽

Drazen Vouk

Keyword(s):

Water Supply ◽

Cost Effective ◽

Pressure Control ◽

Water Supply Systems ◽

Pressure Regulation ◽

Effective Activity ◽

Variable Frequency Drives ◽

Loss Control ◽

Supply Systems ◽

The City

In water supply systems, pressure management in most cases is proven to be the most cost-effective activity related to water loss control. As an advanced method of pressure control, it is possible to use variable frequency drives for centrifugal pump control. Pressure regulation can be performed with constant pressure or with proportional pressure control. The application of proportional pressure control is particularly applicable in water supply systems as the operating pump performance is constantly adapting the pressure to the actual demand. Along with lower leakage losses, it also results in lower energy consumption and the elimination of non-stationary phenomena, thereby extending the pump lifetime. Therefore, the paper presents a theoretical discussion of the proportional pressure control. Possible savings are shown on the numerical example of water supply system of the city of Velika Gorica.

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About the question of the assessment of the drinking water quality in centralized water systems in the current conditions

Hygiene and Sanitation ◽

10.47470/0016-9900-2020-99-6-563-568 ◽

2020 ◽

Vol 99 (6) ◽

pp. 563-568

Author(s):

Yuliya A. Novikova ◽

K. B. Friedman ◽

V. N. Fedorov ◽

A. A. Kovshov ◽

N. A. Tikhonova ◽

...

Keyword(s):

Water Quality ◽

Drinking Water ◽

Water Supply ◽

Supply System ◽

Drinking Water Quality ◽

Water Supply Systems ◽

High Quality ◽

Supply Systems ◽

The City

Introduction. Regulation of drinking water quality is a very important area of health care and improving the quality of life of the population of the Russian Federation.The aim of this work is the development a model for the assessment of the drinking water quality and calculating the share of the population, including urban, provided with high-quality drinking water from centralized water supply systems, taking into account new methodological approaches to the evaluation of the quality of drinking water using the example of water supply to settlements in the Leningrad Region. Material and methods. The data on the organization of centralized cold water supply systems and monitoring systems for drinking water quality and the results of laboratory studies of drinking water quality in the cities of Volkhov, Svetogorsk, Slantsy, Tosno were studied. Statistical processing of the results was performed, the categories of quality of drinking water supplied to the population were determined, the number of the population provided with high-quality drinking water from the water supply system was calculated in accordance with Guidelines 2.1.4.0143-19.Results. In 2018, 100% of the population was provided with quality drinking water only in the city of Slantsy. In the city of Tosno, this index reached of 83.5%. In the cities of Volkhov and Svetogorsk, drinking water was rated as low-quality. But it is worth noting that in the cities of Volkhov and Slantsy laboratory tests were carried out at 2 points, in the city of Svetogorsk - only at the 1 point, which, given the number of residents, is not enough. For an objective assessment of the state of drinking water and the development of measures aimed at improving its quality, it is necessary to increase the number of monitoring points, as well as to include the results of control and supervision measures and production laboratory control conducted by water supply organizations in the volume of laboratory information.Conclusion. The proposed model allows us to assess the drinking water quality in centralized water supply systems and the proportion of the population, including urban, provided with quality drinking water at the level of the water supply system, settlement, municipal district (urban district), subject of the Russian Federation

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Dimensionless curves of centrifugal pumps for water supply systems: development and case study

RBRH ◽

10.1590/2318-0331.0217170018 ◽

2017 ◽

Vol 22 (0) ◽

Author(s):

Jóice Cristini Kuritza ◽

Giovani Camponogara ◽

Marcelo Giulian Marques ◽

Daniela Guzzon Sanagiotto ◽

Cristiane Battiston

Keyword(s):

Water Supply ◽

Maximum Yield ◽

Electricity Consumption ◽

Operating Conditions ◽

Water Supply Systems ◽

Centrifugal Pumps ◽

Water Pumping ◽

Performance Curves ◽

Supply Systems

ABSTRACT Centrifugal pumps are widely used in water supply systems and account for more than 90% of the electricity consumption of water pumping stations. Studies that seek to generalize the characterization of performance curves of centrifugal pumps are extremely useful. A study was carried out on the dimensionless characteristics of the operating conditions of centrifugal pumps for preliminary design estimations of water supply systems aiming at energy efficiency. The research consisted of the analysis of performance curves of centrifugal pumps from which data was collected regarding the point of maximum yield (PMY). The curves and the equations obtained were made dimensionless so that the information could be extrapolated to other situations. A case study was conducted in the Water Supply System of Vale Campus of the Federal University of Rio Grande do Sul (UFRGS) to demonstrate the application of those equations and curves developed. The dimensionless equations were useful to determine which discharge should be adopted so that the system would be more efficient hydro and energetically and, also, to determine how much more energy would be consumed in the case of alteration of the point of operation of the pump by a throttling valve.

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