water supply network modeling Articles

  • 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

  • Modeling water supply networks in New Zealand

    Untitled Document Introduction ...


    By Innovyze

  • Prediction of the quality of public water supply using artificial neural networks

    The Health Surveillance Program was established by the Regional Health Authority of Alentejo to control the quality of public water supply. This authority divides the water quality parameters into three distinct groups, namely P1 (pH and conductivity), P2 (nitrate and manganese) and P3 (sodium and potassium), for which the sampling frequency is dissimilar. Thus, the ...


    By IWA Publishing

  • Hybrid genetic algorithm in the optimization of energy costs in water supply networks

    Efficient operation of water distribution systems is linked with the assurance of water availability to the population. In general, the operational rules applied to water distribution networks have as a sole objective the continuity of the water supply and disregards saving energy costs related to the operation of the pumps. The task of determining optimal operational procedures involves several ...


    By IWA Publishing

  • Model- vs. data-based approaches applied to fault diagnosis in potable water supply networks

    The problem of fault diagnosis in potable water supply networks is addressed in this paper. Two different fault diagnosis approaches are proposed to deal with this problem. The first one is based on a model-based approach exploiting a priori information regarding physical/temporal relations existing among the measured variables in the monitored system, providing fault detection and isolation ...


    By IWA Publishing

  • 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

  • The Need for a Total View of Water Networks

    The water industry is not short of software offerings, and so the arguments in favour of yet another software program had better be very good indeed. In this article we examine how one very significant community of users – operations managers, engineers and planners - have largely had their specific needs overlooked; we identify the type of system needed to fulfil their requirements and the ...


    By Innovyze

  • Introducing pressure and number of connections into water loss indicators for French drinking water supply networks

    In France, the system of performance indicators defined within the relevant regulations does not include indicators relating to pressure, or the number of connections. So, Irstea and Veolia Water decided to create a new system of water loss indicators designed for use in France and that would take into account these parameters. The study was initially carried out at District Metered Area (DMA) ...


    By IWA Publishing

  • A multi–modal supply chain network design for recycling waterway sediments

    The French waterway system consists of large navigable rivers and canals connecting many regions. Maintaining a safe navigation channel, in the Nord–Pas De Calais (NPDC) region in France, requires the regular removal of accumulated sediments which are often contaminated with zinc, lead, cadmium, and mercury. New legislations, such as the European Water Framework Directive (DCA, 2000), ...


    By Inderscience Publishers

  • Uncertainty quantification of pressure-driven analysis for water distribution network modeling

    The hydraulic analysis of water distribution networks (WDNs) is divided into two approaches: namely, a demand-driven analysis (DDA) and a pressure-driven analysis (PDA). In the DDA, the basic assumption is that the nodal demand is fully supplied irrespective of the nodal pressure, which is mainly suitable for normal operating conditions. However, in abnormal conditions, such as pipe failures ...


    By IWA Publishing

  • 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

  • Network Models in the Control Room the Fact and the Fiction

    In this article Dan Stevens, Senior Support Engineer for Water Distribution Software at Wallingford Software, discusses the potential for Network Models to be used in the control room, what is possible, and indeed what is a sensible level of integration of network modelling with other systems (such as telemetry and SCADA) for a more complete understanding of system operation and performance. For ...


    By Innovyze

  • InfoWorks WS: the latest innovations in water supply and distribution modeling

    Introduction and backgroundInfoWorks WS from Wallingford Software is the leading software solution that integrates asset and business planning with water supply and distribution network modeling. The powerful hydraulic simulation within InfoWorks is exceptionally fast, robust and efficient, especially for very large networks. InfoWorks WS engine was introduced in 1998 and a major release every ...


    By Innovyze

  • Modeling trihalomethane formation for Jabal Amman water supply in Jordan

    A mathematical model that expresses Total trihalomethane (TTHM) concentration in terms of initial chlorine concentration, total organic carbon, bromide ion concentration, contact time, and pH is developed for Zai water treatment plant which supplies water to Jabal Amman. The developed mathematical model is for constant temperature of 20°C. To adjust model calculated TTHM concentrations for ...


    By Springer

  • Division method for water distribution networks in hilly areas

    Water distribution systems in hilly areas are always divided into several zones due to the undulating terrain. The present approach of dividing water distribution systems lacks an assessment index and is characterized by a low degree of automation. With the building of a mathematical model, this paper introduces two indicators – pressure limitation and pressure variation – to enable the ...


    By IWA Publishing

  • Improving equity in intermittent water supply systems

    The problems of limited financial resources and water scarcity in urban areas of developing countries are of concern to water managers following growing demand–supply imbalance. As a result, an intermittent supply is widely adopted as a measure for controlling water demand among consumers. However, ensuring equitable water distribution at low cost in intermittent water supply systems ...


    By IWA Publishing

  • On the usage of artificial neural networks in chlorine control applications for water distribution networks with high quality water

    Artificial neural network (ANN) methodology has found some recent applications as efficient control tools for satisfying free residual chlorine (FRC) levels at critical locations of water distribution systems. This particular research was started to critically investigate the potential and applicability of the ANN approach as a tool for controlling FRC levels for complex water distribution ...


    By IWA Publishing

  • Topological clustering as a tool for planning water quality monitoring in water distribution networks

    Topological clustering was explored as a tool for water supply utilities in preparation of monitoring and contamination contingency plans. A complex water distribution network model of Copenhagen, Denmark, was simplified by topological clustering into recognizable water movement patterns to: (1) identify steady clusters for a part of the network where an actual contamination has occurred; (2) ...


    By IWA Publishing

  • 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

  • Implementation of pressure reduction valves in a dynamic water distribution numerical model to control the inequality in water supply

    The analysis of water distribution networks has to take into account the variability of users' water demand and the variability of network boundary conditions. In complex systems, e.g. those characterized by the presence of local private tanks and intermittent distribution, this variability suggests the use of dynamic models that are able to evaluate the rapid variability of pressures and ...


    By IWA Publishing

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