Water Treatment Chemicals Articles

  • 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 ...

  • Professional Papermaking: New published article about Kurita Europe

    "Professional Papermaking” published a title story about Kurita, including interviews with Thomas Wilhelm (Business Manager Paper Solutions) and Toshinori Maema (Sales Director Europe for Paper Solutions). “Professional Papermaking” is an international magazine with 2 issues per year. Readership is the pulp & paper industry. A new name, but by no means a ...


    By Kurita

  • Physical and chemical impacts of conventional unit processes and coagulants on the dinoflagellate, Ceratium hirundinella

    The freshwater dinoflagellate, Ceratium hirundinella (C. hirundinella) with its complex morphology and robust thecal plate cell covering, is responsible for extensive problems during drinking water production. To have a better understanding of these problems, knowledge of what happens to the integrity of the cells after each step of the conventional water treatment process is ...


    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

  • Experimental paradigm for in‐laboratory proxy aquatic studies under conditions of static, non–flow‐through chemical exposures

    Endocrine‐disrupting chemicals (EDCs) such as 17α‐ethynylestradiol, 17β‐estradiol, estrone, and para‐nonylphenol have been measured in wastewater‐treatment plant effluents, surface waters, sediments, and sludge and have been shown to induce liver‐specific vitellogenin (vtg) messenger RNA in male fathead minnows (Pimephales promelas). The purpose of the present study was to establish minimal ...


    By John Wiley & Sons, Ltd.

  • INNOVATIVE CHEMICALS FOR DETERIORATED RO MEMBRANES

    The new rejuvenation chemical treatment is introduced in this paper. This chemical treatment repairs the deteriorated RO membranes, and recovers the salt rejection ratio immediately. In the past, such kind of rejuvenation methods have been developed and reported only with table test basis and pilot plant test basis as seen in the IVREFERENCES ...


    By Kurita

  • Removal and transformation products of ibuprofen obtained during ozone- and ultrasound-based oxidative treatment

    The oxidation of ibuprofen (IBP) in water was evaluated using oxidative treatments: ozonation, sonication, hydrogen peroxide addition and combinations of these processes. After 20 minutes of treatment, ozone coupled with hydrogen peroxide at pH 7, 15 °C, an ozone dose of 16 mg/L and a hydrogen peroxide concentration of 7.1 mg/L was found to have the highest IBP (95%) and chemical ...


    By IWA Publishing

  • Legionella, water treatment and energy saving

    We can help improve health and safety and increase energy reduction. At the moment you probably keep water temperatures above 60°C and you probably undertake regular chemical or thermal water system treatments and shower head treatments, all to prevent the growth of Legionella in your water system. There are several reasons to do this including legal, safety, ...


    By Aquadron

  • Kurita chemical deal solves sales dilemma

    The Japanese company has drastically ramped up its presence abroad with its first foreign acquisition in 16 years. The European sales boost will see the overseas chemicals business streak ahead of the facilities division. Kurita Water Industries has made a crucial step away from a sluggish home market in Japan with its first overseas acquisition since buying Hansu Technical Service in 1998. It ...


    By Kurita

  • Verderflex peristaltic pumps replaces mag drive pumps in water treatment

    Verderflex provided a cost effective solution to a Swiss airport that had been experiencing significant problems with their water softening treatment. The local water supply required treatment to prevent scaling in the pipework.  The Challenge The existing treatment system required a salt solution to be dosed from a storage tank close to the pumps ...

  • Case study - Sea water treatment for offshore oil & gas pipeline hydrotesting

    atg UV Technology have recently designed and manufactured a state of the art, containerised UV disinfection package for the treatment and removal of SRB's (Sulphate Reducing Bacteria) from sea water. The system incorporates two parallel trains of three SX-635-16 UV Systems in series.  To avoid problems associated with maintenance and corrosion, atg UV Technology manufactured all UV systems, ...


    By atg UV Technology

  • Ozone disinfection: main parameters for process design in wastewater treatment and reuse

    Wastewater disinfection by ozone was investigated at pilot and full scale on different wastewater effluents and two types of ozone reactors. It was demonstrated that water quality and, in particular, suspended solids and organic content strongly influence the required ozone dose for a given level of disinfection. The increase in contact time and residual ozone concentration did not improve the ...


    By IWA Publishing

  • Understanding the impacts of allocation approaches during process‐based life cycle assessment of water treatment chemicals

    Chemicals are an important component of advanced water treatment operations not only in terms of economics, but also from an environmental standpoint. Tools such as life cycle assessment (LCA) are useful for estimating the environmental impacts of water treatment operations. At the same time, LCA analysts must manage several fundamental and as yet unresolved methodological challenges, one of ...


    By John Wiley & Sons, Ltd.

  • Kinetic modelling approach as a decision support tool for chloraminated distribution systems

    Disinfection and distribution system management of chloraminated systems can be a challenging task for water operators due to the complexity of chloramine chemistry. Formation of chloramines and maintenance of a suitable disinfection environment requires careful control of several operational parameters at the plant and at different locations along the distribution system. A mathematical model ...


    By IWA Publishing

  • Alto Lampa, Chile - Case Study

    Fast Facts Contaminant: Arsenic Flow Rate: 800 gpm The residential subdivision of Alto Lampa is a rapidly developing neighborhood located just outside of Santiago de Chile. The community is served by two wells, each with a flow of 800 gallon per minute (50 liters per second), running one at a time. Both wells produce raw ...

  • Modeling NOM removal by softening in a surface water treatment plant

    Phenomenological models and hybrid phenomenological–chemometric models were developed to predict natural organic matter (NOM) removal based on the real water treatment data from the city of Minneapolis over a 3 year period. The analysis of the modeling results showed that the phenomenological model was able to capture the major variations of NOM removal but it tended to over predict the ...


    By IWA Publishing

  • UV/H2O2 treatment: an essential process in a multi barrier approach against trace chemical contaminants

    The presence of pesticides, endocrine disruptors and pharmaceuticals caused PWN to implement multiple barriers for organic contaminant control in their surface water treatment plants. A combination of advanced oxidation by UV/H2O2 treatment and granular activated carbon (GAC) filtration is installed. Medium pressure UV experiments in a standard pilot reactor have been carried out into ...


    By IWA Publishing

  • City of Roswell, Georgia - Case Study

    In late 2011, the United States Army Corps of Engineers (USACE) approved plans to install a new well and build a new water treatment facility for the City of Roswell, Georgia. Barlovento LLC was selected during a competitive bidding process to provide an iron and manganese removal system for the new water supply. AdEdge Water Technologies, LLC was contracted to design, manufacture, and commission ...

  • Removal of ZnO nanoparticles in simulated wastewater treatment processes and its effects on COD and NH4+-N reduction

    For many engineered nanoparticles, the primary pathway of release into the environment is via sewage and industrial wastewater discharges. In this work, the removal of uncoated ZnO nanoparticles (ZnO NPs) during simulated wastewater treatment processes and its impact on treatment performance were examined. Simulated primary clarification removed the majority (about 70%) of the dosed ZnO ...


    By IWA Publishing

  • Sustainable wastewater treatment chemicals in a dairy

    Problem/Definition Atana Ltd has been tasked in reducing sludge generation produced at the sites effluent plant by introducing a new chemical regime. This would bring considerable savings on their daily running costs; reduce the need for hazardous substances and prevent any corrosive issues through the removal of inorganic chemicals. The plant also has consent issues with FOG and ...


    By Atana Limited

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