water modeling Articles

  • Water Quality Models

    ' In order to determine the impacts of a particular discharge on ambient water quality, it is usually necessary to model the diffusion and dispersion of the discharge in the relevant water body. The approach applies both to new discharges and to upgrading of existing sources. This note provides guidance on models that may be applicable in the context of typical Bank projects.' Introduction ...


    By The World Bank

  • Water Quality Modelling

    Water quality modelling involves the prediction of water pollution using mathematical simulation techniques. A typical water quality model consists of a collection of formulations ...


    By IWA Publishing

  • Energy from Waste (EfW)

    To recover energy from waste is a necessary and useful part of the whole waste management process. Inciner8 have developed the first truly mobile waste to energy solution in their EfW range of equipment. ...


    By Inciner8 Limited

  • Water Resources Management and Modeling

    Hydrology is the science that deals with the processes governing the depletion and replenishment of water resources of the earth's land areas. The purpose of this book is to put together recent developments on hydrology and water resources engineering. First section covers surface water modeling and second section deals with groundwater modeling. The aim of this book is to focus attention on the ...


    By IWA Publishing

  • Rold Model Water Recycling Program

    ABSTRACTThe Viejas Band of Kumeyaay Indians, a federally recognized tribe, vested with authority by the U.S. Environmental Protection Agency (USEPA), form the Tribal Government to regulate all activities concerning water quality issues within the reservation boundaries. The Reservation has 400 non-transient residents and an average of 5,000 transient residents. The transient population visits the ...

  • Singapore a model for effective water management

    Singapore continues to be a model of effective water management as more and more countries begin experiencing water scarcity. To some, the Asian city-state (which occupies an area roughly a quarter the size of Rhode Island) may seem an unlikely beacon for water efficiency. But, to achieve water security and self-sufficiency, residents have been helping leaders meet national water management ...


    By Fluence Corporation

  • Water balance modelling of alternate water sources at the household scale

    Alternate water sources are being implemented in urban areas to augment scheme water supplied by a water utility to homes. These sources include residential wells, rainwater tanks and greywater systems. Greater water efficiency can be achieved when these systems are designed to match a water source to a given demand based on both water quantity and quality parameters. In this way the use of an ...


    By IWA Publishing

  • Urban-Water Harmony model to evaluate the urban water management

    Water resources in many urban areas are under enormous stress due to large-scale urban expansion and population explosion. The decision-makers are often faced with the dilemma of either maintaining high economic growth or protecting water resources and the environment. Simple criteria of water supply and drainage do not reflect the requirement of integrated urban water management. The ...


    By IWA Publishing

  • Modelling the urban water system of Alexandria using the Aquacycle model

    As in other cities in Egypt, water demand in the metropolitan area of Alexandria is rapidly increasing over time, as a result of urban expansion, amelioration of living standards and industrial development. As the River Nile is the main source of freshwater supply, concerns arise regarding a potential reduction in Alexandria's allocation quota, which could affect population growth at the ...


    By IWA Publishing

  • Lake Water Quality Model with Focus on Cyanobacteria

    ABSTRACTThe cause of cyanobacteria’s growth and dominance in certain eutrophic lakes is explored via a water quality model application. The one-dimensional lake water quality model includes nitrogen, phosphorus, silica, three phytoplankton groups and zooplankton. Lake Washington was used as the case study due to its unique history of eutrophication during a large wastewater nutrient loading ...

  • A stochastic model for daily residential water demand

    Residential water demand is a random variable which influences greatly the performance of municipal water distribution systems (WDSs). The water request at network nodes reflects the behavior of the residential users, and a proper characterization of their water use habits is vital for the hydraulic system modeling. This study presents a stochastic approach for the characterization of the ...


    By IWA Publishing

  • Saline intrusion groundwater model: water company

    Client: Water Industry Location: Sussex Services: Groundwater Modelling, Water Quality and Groundwater Protection Issues: Impact on deployable groundwater resources from saline intrusion within a Chalk aquifer Summary: ESI was commissioned to produce a scoping model to simulate the effect of ...


    By ESI Consulting Ltd

  • Bayesian modelling for water loss management decisions

    Bayesian networks and their associated methods are especially suited for capturing and dealing with uncertainty. They can be successfully applied both in engineering sciences and in reliability analyses of water distribution systems. In this paper we propose an interactive Bayesian network and a decision-theoretic system which intend to monitor water loss, predict likely outcome and select ...


    By IWA Publishing

  • A coupled model for water resources allocation regarding water quality control

    In this study, a fuzzy credibility constrained programming (FCCP) model is developed for water quantity and quality management with uncertainties in water quality parameters. The proposed method could reflect not only inexact uncertainties in the objective function, variables and parameters, but also fuzzy uncertainties in the right-hand side. Credibility levels which represent satisfaction ...


    By IWA Publishing

  • Hydrodynamic modelling and forecasting of microbial water quality in a drinking water source

    Faecal contamination often enters drinking water sources through emergency discharges, which occur as a result of technical malfunctions or a hydraulic overload of the sewer system during periods of heavy rain. In October–November 2012, several emergency discharges entered Lake Rådasjön – a drinking water source for Gothenburg, Sweden. To describe and forecast the ...


    By IWA Publishing

  • Thermodynamic modelling of a water-to-water heat pump using propane as refrigerant

    The aim of this paper is to develop a thermodynamic model for a water-to-water heat pump using propane as refrigerant. This model is based on the thermodynamic principals and heat transfer fundamental laws. The performances of the heat pump have been looked at as function of the water temperatures at the entry of the evaporator and the condenser. The results show that the cooling and heating COP ...


    By Inderscience Publishers

  • Towards a Service Quality Model for Water Utilities

    Regulation of water utilities is often achieved through “yard-stick competition”, where the service quality of monopolistic service providers is compared with peer organisations in the same jurisdiction (Braadbaart, 2007; Lin & Berg, 2008). Regulatory models for water utilities focus on measuring business performance through a series of indicators (Braadbaart, 2007; Byatt, 2013; ...


    By IWA Publishing

  • Combining multimedia models with integrated urban water system models for micropollutants

    Integrated urban water system (IUWS) modeling aims at assessing the quality of the surface water receiving the urban emissions through sewage treatment plants, combined sewer overflows (CSOs) and stormwater drainage systems. However, some micropollutants tend to appear in more than one environmental medium (air, water, sediment, soil, groundwater, etc.). In this work, a multimedia fate and ...


    By IWA Publishing

  • MIKE 11 model-based water quality model as a tool for the evaluation of water quality management plans

    Water quality models are important tools to test the effectiveness of alternative management plans on the water quality of water bodies. The main aim of this study was to develop and demonstrate use of a water quality model as a tool for evaluation of alternative water management scenarios for the river basin of Beijing, China. Considering Lao Hewan river landscape water circulation patterns and ...


    By IWA Publishing

  • Bi-level optimization allocation model of water resources for different water industries

    There are severe water shortages, exacerbated by overexploitation, in the region upstream of the dam at Zhang Jiakou, and in many other regions, both in China and other parts of the world. Allocating water resources equitably amongst the numerous domestic and industrial consumers in these regions, while preserving or improving the environment and meeting economic goals, is a highly complex ...


    By IWA Publishing

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