water supply hydraulic system Articles

  • Study of hydraulics and mixing in roof tanks used in intermittent water supply

    Roof tanks are common in low and middle income countries, due to the intermittent water supply. Their hydraulic and water mixing behaviour has not been studied. This paper presents the results of a study on mixing and water demand in roof tanks, based on physical and numerical models. Tracer tests were carried out on a real scale transparent wall laboratory model of a roof tank, and a ...


    By IWA Publishing

  • Optimising the water supply network

    Untitled Document The city of Crema sits on the Serio River south east of Milan in Northern Italy and has a population of approximately ...


    By Innovyze

  • Hydraulic capacity of ancient water conveyance systems to Ephesus

    Ephesus was supplied by several long-distance water conveyance systems in ancient times. The 8 km long Şirince water conveyance system consists of baked clay pipes, and had a hydraulic capacity of around 10 l/s. The 7 km long Derbentdere water conveyance system consists also of baked clay pipes; and its hydraulic capacity was around 20 l/s. The 36 km long Değirmendere water ...


    By IWA Publishing

  • Risk management for water supply pipes

    In this paper, the risk of water supply systems as a combination of hydraulic analyses (consequence) and failure probability of pipelines based on the actual condition is discussed. On the one hand, a stepwise closing of pipelines calculates the influence on customer's supply which represents the importance of a pipe. On the other hand, based on existing failure statistics, age and material ...


    By IWA Publishing

  • Hydraulic modeling and water quality monitoring

    Untitled Document The 2004 IMTech conference held in Baltimore, Maryland, April 18-20, attracted hundreds of water professionals interested in the application of IT solutions in water supply and distribution ...


    By Innovyze

  • Water supply planning & environmental studies

    Client: U.S. Fish & Wildlife Service Completion Date: 1998 Services Provided Surface water modeling Groundwater modeling Storage reservoir siting and assessment Facility modifications Water supply alternative evaluations Water quality analysis Hydrology and hydraulics ...


    By Burns & McDonnell

  • Homeland Security for Drinking Water Supplies

    As it has done with other jurisdictions, Congress has recently passed legislation aimed at protecting our nation's drinking water resources. Historically, water supply protection has been a high priority, including reservoir protection, continuous monitoring, and secure and redundant facilities to ensure an uninterrupted supply of drinking water. The Clean Water Act (1972), requires pollution ...


    By AECOM

  • Integrated hydraulic modelling of water supply and urban drainage networks for assessment of decentralized options

    The impact of climate change, water scarcity, land use change, population growth and also population shrinking can only be predicted with uncertainties. Especially for assets with a long planning horizon this is a critical part for planning and design. One solution is to make centralized organized water infrastructure with a long-planning horizon resilient and adaptive. For existing centralized ...


    By IWA Publishing

  • How to assess the effectiveness of energy management processes in water supply systems

    The main objectives that generally motivate the implementation of energy management strategies, suggestions of possible assessment criteria and corresponding performance measures are presented in a systematic way. A methodology based on the hydraulic energy balance along water pipe systems and four performance indices to assess energy efficiency is established. This methodology is applied to a ...


    By IWA Publishing

  • Ancient water supply system of the old town of Lijiang, Yunnan Province, China

    Lijiang City is located at 2,400 m altitude in the northwest of Yunnan Province, China. Lijiang's old town, with an area of 3.8 km2 and about 25,000 inhabitants, was inscribed on the UNESCO World Heritage List on 6 December 1997 noting in particular that it “possesses an ancient water supply system of great complexity and ingenuity that still functions effectively today.” In this paper, the water ...


    By IWA Publishing

  • An approximate analytical method to size an air vessel in a water supply system

    The size parameters of an air vessel, mainly including its initial gas volume and total volume, account for its performance in hydraulic transients. Traditionally, the size of an air vessel in a given water supply system is estimated by trial and error, usually aided by computers. To simplify the preliminary estimation of the air vessel's volume, in this paper, an approximate analytical method ...


    By IWA Publishing

  • Modeling water supply networks in New Zealand

    Untitled Document Introduction ...


    By Innovyze

  • Problem Solver for water supply - Pollution incidents

    Pollution in water supplies has always been a concern for water companies and with today’s political climate the issue has never been more important. The threat of terrorism and the requirements of Homeland Security and similar initiatives around the world require that water companies maintain detailed plans for how to ...


    By Innovyze

  • A solution to fracturing water supply and disposal issues

    “Water, water, everywhere, Nor any drop to drink.” –The Rime of the Ancient Mariner, Samuel Taylor Coleridge Many topics of conversation among oil and gas industry professionals are predictable – oil price trends, the “great shift change” imperiling the available workforce, and production quotas and caps from OPEC. Yet one pressing topic among those developing ...


    By Fairmount Santrol

  • Hydraulic modeling trends in 2003

    It is traditional as a New Year dawns to review the old year and draw some conclusions. Not to be left out, we asked a number of our industry experts to reflect on key developments in their area of specialism based on their observation of the activities and issues facing users around the world during 2003. We cover in turn each of our key areas – Collection Systems, Water Supply, River Systems, ...


    By Innovyze

  • Lake supply & treatment expansion

    Client: City of Fort Smith Completion Date: 2003 - Design2006 - Lake construction2008 - Plant construction Services Provided Supply reservoir enlargement 30 million-gallon-per-day (MGD) water plant renovation New 20-MGD dual train water plant addition Pulsating clarifiers ...


    By Burns & McDonnell

  • Water hammer suppression for long distance water supply systems by combining the air vessel and valve

    In long distance water supply projects, the air vessel is an effective and reliable protection measure to control water hammer. Although it can effectively eliminate water hammer during the process of hydraulic transient, the volume of the traditional air vessel is large due to the long distance pipeline, resulting in high investment. In this paper, based on the analysis of the transient in ...


    By IWA Publishing

  • Hydraulic modeling experience in consulting practice

    Hydraulic modeling experience in consulting practice: Comprehensive Hydraulic Modeling software applications in water and sanitation engineering consultancy practice are a must and are very much essential to simplify several single line or small tree distribution iteration processes used in the olden days. Several Hydraulic models are available for Hydrology, water supply, storm ...


  • A brief history of water supply and wastewater management in ancient Greece

    The evolution of urban water management in ancient Greece begins in Crete during the Middle Bronze and the beginning of the Late Bronze Ages (ca. 2000–1500 B.C.) when many remarkable developments occurred in several stages as Minoan civilization flourished on the island. One of its salient characteristics was the architectural and hydraulic function of its water supply and sewerage systems in the ...


    By IWA Publishing

  • Testing and developing energy harvester systems for operation of energy-self-sufficient measurement and control units in drinking water supply

    In recent years, wireless measurement and control units have become more popular for monitoring water distribution systems in the drinking water supply. Electric power supply for a higher number of devices through fixed connections to the public electrical grid is technically complex and requires large investments. Powering monitoring devices, which are installed in areas where electrical ...


    By IWA Publishing

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