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Stochastic Water Demand Modelling
  • Language: en
  • Pages: 181

Stochastic Water Demand Modelling

Water quality processes in the drinking water distribution network are strongly influenced by the flow velocity and residence time of the water in the network. In order to understand how the water quality changes in the drinking water distribution network, a good understanding of hydraulics is required. Specifically in the periphery of the network, where customers are connected, the hydraulics can change rapidly. During the night time the water is almost stagnant and the residence time increases. In the morning, when everybody gets up and flushes the toilet and takes a shower, high flow velocities can occur. During the remainder of the day flow velocities are low. The stochastic endues model...

Water Quality in Drinking Water Distribution Systems
  • Language: en
  • Pages: 146

Water Quality in Drinking Water Distribution Systems

  • Type: Book
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  • Published: 2020-12-02
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  • Publisher: MDPI

Safe drinking water is paramount for the health and wellbeing of all human populations. Water is extracted from surface and groundwater sources and treated to comply with drinking water standards. The water is then circulated through the drinking water distribution system (DWDS). Within the DWDS, water quality can deteriorate due to microbiological growth, chemical reactions, interactions with ageing and deteriorating infrastructure, and through maintenance and repair activities. Some DWDS actions may serve to improve water quality; however, these can adversely impact the drinking water system and cause instances of poor water quality or disease outbreaks. We invited papers covering examinations of DWDS design and operational practices and their impact on water quality. We received papers based on practical research in real DWDS and laboratory test facilities. We also received papers on novel modelling approaches. A wide range of water quality aspects was gathered, including temperature, disinfection, bacterial communities and biofilm, (fecal) contamination and QMRA, and the effects of flushing and intermittent supply.

Microbial Growth in Drinking Water Supplies
  • Language: en
  • Pages: 484

Microbial Growth in Drinking Water Supplies

Maintaining the microbial quality in distribution systems and connected installations remains a challenge for the water supply companies all over the world, despite many years of research. This book identifies the main concerns and knowledge gaps related to regrowth and stimulates cooperation in future research. Microbial Growth in Drinking Water Supplies provides an overview of the regrowth issue in different countries and the water quality problems related to regrowth. The book assesses the causes of regrowth in drinking water and the prevention of regrowth by water treatment and distribution. Editors: Dirk van der Kooij and Paul W.J.J. van der Wielen, KWR Watercycle Research Institute, The Netherlands

Advances in Modeling and Management of Urban Water Networks
  • Language: en
  • Pages: 290

Advances in Modeling and Management of Urban Water Networks

  • Type: Book
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  • Published: 2021-01-06
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  • Publisher: MDPI

The Special Issue on Advances in Modeling and Management of Urban Water Networks (UWNs) explores four important topics of research in the context of UWNs: asset management, modeling of demand and hydraulics, energy recovery, and pipe burst identification and leakage reduction. In the first topic, the multi-objective optimization of interventions on the network is presented to find trade-off solutions between costs and efficiency. In the second topic, methodologies are presented to simulate and predict demand and to simulate network behavior in emergency scenarios. In the third topic, a methodology is presented for the multi-objective optimization of pump-as-turbine (PAT) installation sites i...

Water-Energy-Nexus in the Ecological Transition
  • Language: en
  • Pages: 434

Water-Energy-Nexus in the Ecological Transition

This volume includes selected contributions presented during the 3rd edition of the international conference on WaterEnergyNEXUS, which was held in Tunisia in December 2020. This conference was organized by the University of Sfax (Tunisia), in cooperation with the Sanitary Environmental Engineering Division (SEED) of the University of Salerno (Italy), the Advanced Institute of Water Industry at Kyungpook National University (Korea) and The Energy and Resources Institute, TERI (India). The WaterEnergyNEXUS series of conferences are supported by the UNESCO World Water Association Programme (WWAP) and the International Water Association (IWA). It also enjoys the patronage of several internation...

Global Environmental Health
  • Language: en
  • Pages: 140

Global Environmental Health

The issues surrounding water services are some of the most critical challenges facing not only the United States, but also the global community today. The Roundtable on Environmental Health Sciences, Research, and Medicine of the Institute of Medicine convened a workshop in October 2007, summarized in this volume, to address objectives related to Sustainable Water, Sanitation, and Hygiene Services. One of the objectives of the workshop was to think about the interdependence of environmental health and human health as connected through water. Organizations cannot discuss water without considering the interrelationship of sanitation and hygiene. It is the convergence of these strategies that p...

Strategic Asset Management of Water Supply and Wastewater Infrastructures
  • Language: en
  • Pages: 553

Strategic Asset Management of Water Supply and Wastewater Infrastructures

Water and Wastewater companies operating all around the world have faced rising asset management and replacement costs, often to levels that are financially unsustainable. Management of investment needs, while meeting regulatory and other goals, has required: A better understanding of what customers demand from the services they pay for, and the extent to which they are willing to pay for improvements or be compensated for a reduction in performance Development of models to predict asset failure and to identify and concentrate investment on critical assets Improved management systems Improved accounting for costs and benefits and their incorporation within an appropriate cost-benefit framewo...

Water Quality in Drinking Water Distribution Systems
  • Language: en
  • Pages: 146

Water Quality in Drinking Water Distribution Systems

  • Type: Book
  • -
  • Published: 2020
  • -
  • Publisher: Unknown

Safe drinking water is paramount for the health and wellbeing of all human populations. Water is extracted from surface and groundwater sources and treated to comply with drinking water standards. The water is then circulated through the drinking water distribution system (DWDS). Within the DWDS, water quality can deteriorate due to microbiological growth, chemical reactions, interactions with ageing and deteriorating infrastructure, and through maintenance and repair activities. Some DWDS actions may serve to improve water quality; however, these can adversely impact the drinking water system and cause instances of poor water quality or disease outbreaks. We invited papers covering examinations of DWDS design and operational practices and their impact on water quality. We received papers based on practical research in real DWDS and laboratory test facilities. We also received papers on novel modelling approaches. A wide range of water quality aspects was gathered, including temperature, disinfection, bacterial communities and biofilm, (fecal) contamination and QMRA, and the effects of flushing and intermittent supply.

Bibliografie van de Nederlandse taal- en literatuurwetenschap
  • Language: nl
  • Pages: 580

Bibliografie van de Nederlandse taal- en literatuurwetenschap

  • Type: Book
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  • Published: 2003
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  • Publisher: Unknown

Aangevuld met de bibliografie van de friese taal- en literatuurwetenschap.

Drinking Water Distribution Systems
  • Language: en
  • Pages: 404

Drinking Water Distribution Systems

Protecting and maintaining water distributions systems is crucial to ensuring high quality drinking water. Distribution systems-consisting of pipes, pumps, valves, storage tanks, reservoirs, meters, fittings, and other hydraulic appurtenances-carry drinking water from a centralized treatment plant or well supplies to consumers' taps. Spanning almost 1 million miles in the United States, distribution systems represent the vast majority of physical infrastructure for water supplies, and thus constitute the primary management challenge from both an operational and public health standpoint. Recent data on waterborne disease outbreaks suggest that distribution systems remain a source of contamina...