Checking The Hydraulic Efficiency and Improving Safety of the Internal Water Supply 

2018 ◽  
Vol 20 (2) ◽  
pp. 121-125
Author(s):  
Sarka Krocova ◽  
Karla Barcova
Keyword(s):  
Water Supply ◽  
Water Supply Systems ◽  
Safety Hazard ◽  
Industrial Facilities ◽  
Internal Water ◽  
Operational Capabilities ◽  
Wide Range ◽  
Hydraulic Conditions ◽  
Industrial Zones ◽  
Supply Systems

Water management systems in industrial facilities, industrial zones, hospitals and other internal water systems relatively frequently fail to meet the intended purpose for which they were built when an extraordinary event occurs. They may even pose a safety hazard. The causes of this condition may be of internal or external origin. Given that internal water supply systems of large premises always have a multipurpose character, i.e. to provide enough drinking water for drinking and sanitation purposes and also as a source of fire water for the fire safety of buildings, they must meet a wide range of hydraulic conditions and technical-operational capabilities. By what means and methods it is possible to achieve the desired state in economically-acceptable dimensions, while maintaining all the necessary hydraulic capabilities of the supply points of drinking and fire water, is briefly described in this article.

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.

scholarly journals Improving of the quality and reliability of water supply systems on the basis of modern information and computing technologies

2018 ◽  
Vol 39 ◽  
pp. 04003 ◽  
Author(s):  
Aleksandr V. Alekseev
Keyword(s):  
Water Supply ◽  
Operational Reliability ◽  
Operating Conditions ◽  
Mode Analysis ◽  
Water Supply Systems ◽  
Common Information ◽  
Quality Of Water ◽  
Common Information Space ◽  
Hydraulic Conditions ◽  
Supply Systems

The article deals with the issues of increasing the reliability and quality of water supply systems operation on the basis of modern methods and software complexes for the analysis and development of hydraulic conditions. Against the backdrop of the analysis of the literature on the problem of reliability, the relevance and insufficiency of attention to maintaining the required level of reliability at the stage of water supply systems operation are revealed. The main factors that affect on operational reliability are considered. These factors are largely associated with the competent organization of operating conditions of water supply systems. A brief description of the «Angara-WS» computer program for solving the problems of analyzing and developing of hydraulic conditions, as well as the experience of its practical application, is given. A special feature of this complex is its universality, the possibility of multilevel representation of models, the execution of one-and multi-level calculations, integration into a common information space of the enterprise, automation of the processes of mode analysis, accumulation and analysis of damage statistics.

Achieving sustainable irrigation development in agricultural areas of Serbia with limited water resources

2019 ◽  
Vol 48 (2) ◽  
pp. 126-135 ◽  
Author(s):  
Željka Rudić ◽  
Goran Nikolić ◽  
Dragiša Stević ◽  
Mile Božić ◽  
Ksenija Mačkić ◽  
...  
Keyword(s):  
Water Supply ◽  
Interdisciplinary Approach ◽  
Water Source ◽  
Irrigated Agriculture ◽  
Water Supply Systems ◽  
Wide Range ◽  
Agricultural Areas ◽  
Sustainable Irrigation ◽  
Supply Systems

Irrigation has contributed significantly to poverty alleviation and food security; however, the sustainability of irrigated agriculture is being questioned both economically and environmentally. Agriculture is the economic sector where most water is consumed, but the lowest price is practised. This article presents an interdisciplinary approach to selecting and prioritizing infrastructure, by differentiating water sources for irrigation, in the case of two complex irrigation systems. Comparative analysis was undertaken for major hydrological, hydraulic, hydrotechnical and economic parameters in order to estimate a long-term water supply for irrigation. In the case of complex irrigation water supply systems, differentiating the ‘subsystems’ per water source and allowing their separate development require less investment and give a better chance for the project implementation. The average calculated investments in basic irrigation infrastructure were in a wide range, from EUR3327 to 10,103 ha−1, depending on anticipated water source (impoundments, groundwater and rivers). Economic water price also varied widely, EUR0.09–0.30 m−3, depending on the water source for irrigation.

Effect of hydraulic conditions on the prevalence of antibiotic resistance in water supply systems

Chemosphere ◽  
2019 ◽  
Vol 235 ◽  
pp. 354-364 ◽  
Author(s):  
Junpeng Zhang ◽  
Weiying Li ◽  
Jiping Chen ◽  
Feng Wang ◽  
Wanqi Qi ◽  
...  
Keyword(s):  
Antibiotic Resistance ◽  
Water Supply ◽  
Water Supply Systems ◽  
Hydraulic Conditions ◽  
Supply Systems

scholarly journals Analytical and experimental investigation of chlorine decay in water supply systems under unsteady hydraulic conditions

2013 ◽  
Vol 16 (3) ◽  
pp. 690-709 ◽  
Author(s):  
Angeliki Aisopou ◽  
Ivan Stoianov ◽  
Nigel Graham ◽  
Bryan Karney
Keyword(s):  
Water Quality ◽  
Shear Stress ◽  
Water Supply ◽  
Rate Of Change ◽  
Water Supply Systems ◽  
Unsteady State ◽  
Hydraulic Conditions ◽  
Chlorine Decay ◽  
The Impact ◽  
Supply Systems

This paper investigates the impact of the dynamic hydraulic conditions on the kinetics of chlorine decay in water supply systems. A simulation framework has been developed for the scale-adaptive hydraulic and chlorine decay modelling under steady- and unsteady-state flows. An unsteady decay coefficient is defined which depends upon the absolute value of shear stress and the rate of change of shear stress for quasi-unsteady and unsteady-state flows. By coupling novel instrumentation technologies for continuous hydraulic monitoring and water quality sensors for in-pipe water quality sensing a pioneering experimental and analytical investigation was carried out in a water transmission main. The results were used to model monochloramine decay and these demonstrate that the dynamic hydraulic conditions have a significant impact on water quality deterioration. The spatial and temporal resolution of experimental data provides new insights for the near real-time modelling and management of water quality as well as highlighting the uncertainty and challenges of accurately modelling the loss of disinfectant in water supply networks.

ELECTRICITY LOAD PREDICTION FOR WATER SUPPLY SYSTEMS

2008 ◽  
Vol 7 (4) ◽  
pp. 453-458
Author(s):  
Mihai Gavrilas ◽  
Gilda Gavrilas ◽  
Ovidiu Ivanov
Keyword(s):  
Water Supply ◽  
Water Supply Systems ◽  
Load Prediction ◽  
Electricity Load ◽  
Supply Systems

LAVIN NDZ-S BRONZE

Alloy Digest ◽  
1965 ◽  
Vol 14 (5) ◽  
Keyword(s):  
Water Supply ◽  
Physical Properties ◽  
Tensile Properties ◽  
Base Alloy ◽  
High Strength ◽  
Water Supply Systems ◽  
Copper Base ◽  
Valve Stem ◽  
Copper Base Alloy ◽  
Supply Systems

Abstract LAVIN NDZ-S BRONZE is a copper-base alloy recommended as a high-strength dezincification and dealuminization resistant valve stem material in water supply systems. This datasheet provides information on composition, physical properties, hardness, and tensile properties. It also includes information on casting and machining. Filing Code: Cu-151. Producer or source: R. Lavin & Sons Inc..

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