Drinking Water Treatment Articles

  • Water Security – A Growing Issue with No Easy Fixes

    The issue of water security – access to enough quality water to make it possible to live safely – is a growing concern for many, just ask the communities of Flint and Corpus Christie. The problem is exacerbated when communities and companies come face-to-face over access to water supplies. Wouldn’t the nice idea be to share?  That’s met with disagreements as ...


    By LuminUltra Technologies Ltd.

  • Treating drinking water with 99% removal - Case Study

    QED E-Z Tray® Air Stripper Treating Drinking Water with 99% Removal in Cedarburg, Wisconsin In October 2011, the Cedarburg, Wisconsin Light and Water Utility installed a QED E-Z Tray® (U.S. Patent Number 5,518,668) Air Stripper in a discreet addition to their existing production pump building. The E-Z Tray 72.6 handles a flow rate of ...


    By QED Environmental Systems

  • Inactivation of E. coli by copper and silver wire in the presence of synthetic sunlight for safe drinking water

    Bacterially-contaminated water is a major health concern leading to infectious diseases in emerging nations. The use of copper (Cu) and silver (Ag) wire independently, and Cu wire in combination with synthetic sunlight (SySu), were investigated as a low-cost water treatment method. Water inoculated with 1,100 colony forming units/mL of Escherichia coli was treated with one of these four ...


    By IWA Publishing

  • Zirconium and chitosan coagulants for drinking water treatment – a pilot study

    Scientists continuously search for alternative coagulants that would be able to outperform traditionally used aluminium (Al) and iron (Fe). Use of a novel metal coagulant zirconium (Zr) has been associated with enhanced organic matter reduction. On the other hand, eco-friendly non-metal solutions, such as chitosan, can provide non-toxic sludge and water with no metal residue. In fact, Zr and ...


    By IWA Publishing

  • Professional Advice for NEBOSH Success

    Maximising your Study and Exam Approach Following the success of our NEBOSH Quick Reference Sheet we released last week, I thought I would build on this with some extra advice for those students who really want to go the extra mile. Do you just want to pass? Or do you want to get a Distinction? Maybe even a Best Candidate Award? If you’re ambitious, ...


    By SHEilds Ltd

  • Radon-222 from different sources of water and the assessment of health hazard

    Water samples collected from different sources were analysed for radon concentrations in order to evaluate the health effect associated with radon in water. The radon concentrations were in the range of 3.56–98.57, 0.88–25.49, 0.73–1.35 and 0.24–1.03 Bq.L−1 for borehole, well, packaged and utility water, respectively. Samples from boreholes had the highest radon concentrations with about 67% ...


    By IWA Publishing

  • Adsorption of methylene blue from aqueous solutions using water treatment sludge modified with sodium alginate as a low cost adsorbent

    In this research, aluminum-based drinking water treatment sludge is used as a starting material and immobilized by sodium alginate to develop low cost adsorbent for the removal of methylene blue (MB) from aqueous solutions. The studied variables included pH, adsorbent dose, initial MB concentration and contact time. Characteristics of the adsorbent were also studied using scanning electron ...


    By IWA Publishing

  • The Low Down on Pipes: A Look at Municipal Water

    We manufacture our portable remotely operated vehicles (ROVs) and pipe crawlers for a variety of different industries and applications. Due to their robust design and versatility, Deep Trekker products have proven to be the ideal tools for many professionals and ...


    By Deep Trekker Inc.

  • Safe drinking water and waterborne outbreaks

    The present work compiles a review on drinking waterborne outbreaks, with the perspective of production and distribution of microbiologically safe water, during 2000–2014. The outbreaks are categorised in raw water contamination, treatment deficiencies and distribution network failure. The main causes for contamination were: for groundwater, intrusion of animal faeces or wastewater due to ...


    By IWA Publishing

  • Modeling and analysis of chlorine dioxide, chlorite, and chlorate propagation in a drinking water distribution system

    The drinking water distribution system of Cremona, in the north of Italy, was monitored for 6 years (2006–2011) analyzing chlorine dioxide, chlorite, and chlorate concentrations. The software Epanet 2.0 (USEPA) was applied to the distribution system. The mixing zone of the water coming from the two drinking water treatment plants, respectively located to the west and east of the city, was ...


    By IWA Publishing

  • Perfectly clean water without the use of chemicals - Waste Water - Case Study

    Wastewater treatment plant successfully cut down costs and environmental impact Thanks to the disinfectant system from Danish Clean Water, the Danish wastewater treatment plant Fredericia Spildevand is now saving yearly 75.000 € and reusing 70,000 m3 wastewater for cleaning – saving both money and drinking water. The employees at Fredericia Spildevand were quite ...

  • WWEM-Day: Undercover WWEM Information

    In Part 2 of our WWEM-Day installments we’re talking about our exciting undercover news… we have an updated model of one of our classic products about to launch! There will be a simplified design and less parts to make an already low maintenance product even better! This means greater accuracy, not to mention more ease and efficiency! Our new ...


    By Partech (Electronics) Ltd.

  • Limited effectiveness of household sand filters for removal of arsenic from well water in North Vietnam

    Since well water utilized for domestic purposes in the Red River Delta of North Vietnam has been reported to be polluted by arsenic, barium, iron, and manganese, household sand filters consisting of various components are used. Information regarding the effectiveness of various sand filters for removal of the four toxic elements in well water is limited. In this study, arsenic levels in 13/20 ...


    By IWA Publishing

  • Four steps well owners can take to protect their water wells, health during flooding

    The owners of private household water wells in areas of flooding should act to address possible threats to their drinking water quality, the National Ground Water Association said today. If a well has been flooded: Do not drink the water or wash with it, but use an alternative supply such as bottled water Stay away from the well pump ...

  • Glyphosate and AMPA in drinking water

    Carcinogenic or not? The broad-spectrum herbicide glyphosate is used all over the world in agriculture. Alongside farming, the chemical is also used for weed-killing in domestic gardens and in public and private spaces kept free from «vegetal invasion», such as railway tracks. Glyphosate has been used since the 1970s in pesticides and was hitherto thought to be harmless at ...


    By Metrohm AG

  • Drinking water quality control: control charts for turbidity and pH

    Water treatment processes are required to be in statistical control and capable of meeting drinking water specifications. Control charts are used to monitor the stability of quality parameters by distinguishing the in-control and out-of-control states. The basic assumption in standard applications of control charts is that observed data from the process are independent and identically ...


    By IWA Publishing

  • Short-term demand forecast using a bank of neural network models trained using genetic algorithms for the optimal management of drinking water networks

    Efficient management of a drinking water network reduces the economic costs related to water production and transport (pumping). Model predictive control (MPC) is nowadays a quite well-accepted approach for the efficient management of the water networks because it allows formulating the control problem in terms of the optimization of the economic costs. Therefore, short-term forecasts are a ...


    By IWA Publishing

  • Seasonal organics variations: effects on the efficiency of water treatment processes

    Natural organic matter (NOM) in source water has created a lot of interest in the field of water purification. It is of particular concern for surface water treatment plants since it can produce undesirable disinfection by-products (DBPs), interferes with the performance of water treatment processes such as coagulation, membrane filtration, and oxidation processes, and leads to ...


    By Real Tech Inc.

  • Exploring the relationships between small non-community drinking water system characteristics and water system performance in Ontario, Canada

    The objectives of this work were to investigate the relationships between characteristics of small non-community drinking water systems (SDWSs) and the performance of these systems with respect to Escherichia coli testing and risk ratings. Ontario-wide SDWS data were analysed using regression models with outcomes of (1) having an adverse E. coli test result in the 12 months ...


    By IWA Publishing

  • Water markets can support an improved water future

    Fresh water touches every part of daily life – from drinking water and sanitation, to agriculture and energy production. Unfortunately, for nearly half of the world’s population, water scarcity is a growing issue with devastating impacts to our communities, economies and nature. In the past, countries have primarily turned to more supply-side infrastructure, including reservoirs and ...


    By IWA Publishing

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