drinking water treatment Articles

  • Evaluation of model parameters for simulating TiO2 coated UV reactors

    A CFD-based model for simulating TiO2 coated photocatalytic reactors used in drinking water treatment applications was preliminarily evaluated. The model includes aspects of hydrodynamics, mass transfer, UV-radiation field, and surface chemical reactions. Appropriate models for each of the associated physicochemical phenomena were experimentally or analytically examined. Once defined and ...


    By IWA Publishing

  • Research on raw water quality assessment oriented to drinking water treatment based on the SVM model

    Raw water quality variation has a great effect on drinking water treatment. To improve the adaptivity of drinking water treatment and stabilize the quality of treated water, a raw water quality assessment method, which is based upon the support vector machine (SVM), is developed in this study. Compared to existing raw water quality assessment methods, the assessment method studied herein is ...


    By IWA Publishing

  • Coping with poor water supplies: empirical evidence from Kathmandu, Nepal

    The authors examined the demand for clean drinking water using treatment behaviors in Kathmandu, Nepal. Water supply is inadequate, unreliable and low quality. Households engage in several strategies to cope with the unreliable and poor quality of water supplies. Some of the major coping strategies are hauling, storing, and point-of-use treatment. Boiling, filtering, and use of Uro-guard are some ...


    By IWA Publishing

  • Competitive adsorption of micropollutants and NOM onto activated carbon: comparison of different model approaches

    Conventional adsorption models are not able to describe exactly the competitive adsorption of natural organic matter (NOM) and micropollutants during drinking water treatment with activated carbon. This problem is a consequence of the complex structure of natural organic matter. In the last years, two user-oriented model approaches, the tracer model (TRM) and the equivalent background compound ...


    By IWA Publishing

  • Application of chlorine resistant polyamide RO membrane for household water filtration device

    Chlorine attacks the polyamide RO membrane to cause membrane failure as measured by enhanced passage of both salt and water. For this reason, activated carbon pre-filters that remove chlorine are typically placed ahead of RO membranes in home drinking water treatment RO system. A general home drinking water treatment system employing RO is composed of preliminary sediment filter, activated carbon ...


    By Toray Chemical Korea

  • Drinking Water Treatment Process

    Most drinking water comes from a surface water source, such as a lake or river, or a groundwater source, such as a well or spring. This water requires treatment before it can be safely consumed; the level to which the water is treated depends on the source of the water and also on federal regulations. In the United States, for example, the Safe Drinking Water Act was created by the Environmental ...


    By Brentwood Industries, Inc.

  • Removal of NOM-constituents as characterized by LC-OCD and F-EEM during drinking water treatment

    Natural organic matter (NOM) is of concern in drinking water because it causes adverse aesthetic qualities such as taste, odour, and colour; impedes the performance of treatment processes; and decreases the effectiveness of oxidants and disinfectants while contributing to undesirable disinfection by-products. The effective removal of NOM during drinking water treatment requires a good ...


    By IWA Publishing

  • Instrumentation, control and automation in wastewater – from London 1973 to Narbonne 2013

    Key developments of instrumentation, control and automation (ICA) applications in wastewater systems during the past 40 years are highlighted in this paper. From the first ICA conference in 1973 through to today there has been a tremendous increase in the understanding of the processes, instrumentation, computer systems and control theory. However, many developments have not been addressed here, ...


    By IWA Publishing

  • Influence of density flow on treated water turbidity in a sedimentation basin with inclined plate settler

    The removal efficiency of particulate matter from a sedimentation basin with an inclined plate settler in drinking water treatment facilities is sometimes reduced by density flow caused by temperature increases in the raw water. In this study, the structure of the density flow and its prevention are investigated by means of three-dimensional computational fluid dynamics (CFD). The results of ...


    By IWA Publishing

  • Instrumentation, Control and Automation in wastewater ? what happened from London 1973 to Narbonne 2013. Water Science & Technology

    Abstract: Key developments of instrumentation, control and automation (ICA) applications in wastewater systems during the past 40 years are highlighted in this paper. From the first ICA conference in 1973 through to today there has been a tremendous increase in the understanding of the processes, instrumentation, computer systems and control theory. However, many developments have not been ...


    By inCTRL Solutions

  • Ultrasonic removal of cyanobacteria

    This paper studies the ultrasonic removal of cyanobacteria. The results show that ultrasound is an effective way to reduce the water turbidity and to damage chlorophyll a, the antenna complex. Furthermore, 55% of the cyanobacteria were removed after 5 min treatment and no rebound was observed after 3 h. The ultrasonic cyanobacteria removal followed a pseudo first-order reaction and the rate ...


    By Inderscience Publishers

  • Drinking water treatment - understanding the processes and meeting the challenges

    On and follow Natural organic matter (NOM) derived from soil and vegetation in water catchments is the key factor influencing most, if not all water treatment processes. The structure of the NOM and its involvement in water treatment processes requires better understanding. It seems likely that a better understanding of NOM reactions could lead to far better predictive capacity for water ...


    By IWA Publishing

  • United Utilities - Case Study

    Drinking water treatment at Rigdaling WTW Rigdaling water treatment works (WTW) from United Utilities has a daily treated water output of 12 Ml/d. For this WTW, Paques supplied the flocculation/clarification stage comprising ASTRASEPARATOR® lamella packs for the removal of suspended solids and turbidity. Furthermore, Paques supplied the flocculation and ...


    By Paques Technology B.V.

  • Dissolved organic nitrogen (DON) in a full-scale drinking water treatment plant

    Dissolved organic nitrogen (DON) is currently considered as one of the most important parameters in drinking water treatment due to its potential to form toxic nitrogenous disinfection by-products (N-DBPs). A comprehensive investigation was made in this study on the variation of DON in a full-scale drinking water treatment plant with a treatment train of coagulation/sedimentation, biofiltration ...


    By IWA Publishing

  • Why is drinking water treatment necessary?

    Water is found in ample amount almost everywhere on earth. The natural water resources such as lakes, rivers, etc. that provide water contain a lot of pollution, garbage which is unfit for human consumption. To clean the water, it should undergo numerous water treatment media procedures that make it suitable to drink. The water ...

  • Control-design methodology for drinking-water treatment processes

    The performance of a drinking-water treatment plant is determined by the control of the plant. To design the appropriate control system, a control-design methodology of five design steps is proposed, which takes the treatment process characteristics into account. For each design step, the necessary actions are defined. Using the methodology for the pellet-softening treatment step, a new control ...


    By IWA Publishing

  • Identification, assessment, and control of hazards in water supply: experiences from Water Safety Plan implementations in Germany

    According to the recommendations of the World Health Organization (WHO) for Water Safety Plans (WSP), a Technical Risk Management was developed, which considers standard demands in drinking water treatment in Germany. It was already implemented at several drinking water treatment plants of different size and treatment processes in Germany. Hazards affecting water quality, continuity, and the ...


    By IWA Publishing

  • Effect of advanced oxidation processes on nonylphenol removal with respect to chlorination in drinking water treatment

    Any nonylphenol compounds found in water have to be removed since they are endocrine disruptors. In this study, natural water from the river Ebro fortified with nonylphenol compounds (4n-nonylphenol and technical nonylphenol) is used as a sample in order to simulate a real situation in drinking water treatment plants. The aim is to compare conventional disinfection with advanced oxidation ...


    By IWA Publishing

  • MIEX® DOC Process - A New Ion Exchange Process

    The MIEXÒ DOC Process is a novel process that utilises ion exchange for the removal natural organic matter (NOM) in drinking water treatment. The process was developed by Orica Watercare in partnership with the CSIRO Molecular Sciences and SA Water AWQC. A detailed description of the MIEXÒ DOC Process and trial results from several development stages can be found elsewhere (Nguyen et al., 1994 ...


    By Orica Australia Pty Ltd

  • YANG PYUNG, Korea: Ecoskid–Elimination of turbidity and microbiological retention

    The Yang Pyung drinking water treatment plant was equipped with a sand filter process up until 2005. To improve water quality, the city chose the Aquasource technology to modernize its plant. It is the first unit equipped by Aquasource in ...

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