Water Dechlorination Articles

  • A comparative treatment of bleaching wastewater by physicochemical processes

    The bleaching effluent discharged from a pulp and paper mill contains chlorinated organic compounds which are toxic to living matter. Physicochemical treatments such as coagulation and different advanced oxidation processes (AOPs) were employed for combined bleaching effluent generated from the first two stages (i.e. chlorination and alkali extraction) (pH = 3.5, chemical oxygen demand (COD) = ...


    By IWA Publishing

  • How Arsenic Is Removed from Drinking Water

    Drinking water is a vital and life-giving resource. Clean and filtered drinking water keeps you healthy and safe from harmful chemicals that can immediately harm you or slowly damage your body. That is why arsenic removal from drinking water should be handled by professionals, and it should be done to all possible sources of water that supply homes and businesses. Those who are dedicated to ...

  • N. Railroad Ave. Plume Superfund Site - New Mexico

    The NRAP site is a state-lead site in its 7th year of groundwater treatment operations by in-situ enhanced reductive dechlorination. The site’s lead agency, the New Mexico Environment Department (NMED), recently completed a response action report to document ongoing progress in their remediation efforts. NMED utilized EnviroInsite in that effort to assist in the interpretation of sampling ...


    By EarthSoft, Inc

  • Atomic Layer Etching – Changing the Art of the Possible

    The society of vacuum coaters (SVC) deserves to be better known. It was founded in 1957 during a surge in the use of vacuum coating techniques such as sputtering and evaporation. The techniques go back a very long way: that man Edison filed a patent for coating phonograph cylinders in 1892 (It will never catch on). Did you know that the shiny surface inside your crisp packet is a vacuum ...


    By Oxford Instruments plc

  • New Paper: Atomic layer etching using advanced plasma etch technology

    Scientists at Plasma Technology demonstrate Atomic Layer Etching (ALEt) of Silicon, using advanced technology  and plasma process knowledge. Read the article in JVST by Andy Goodyear and Dr Mike Cooke, Oxford Instruments Atomic layer etching using plasma is a cyclical etching process of gas dosing and surface bombardment that removes material layer ...


    By Oxford Instruments plc

  • People Power Leads to Shower Power at Thames Water - Case study

    Thames Water purchased a large number of Emergency Tank Showers from Hughes Safety Showers. And who better to make the decision as to what showers should be installed than the users themselves. Learn more about their unique decision making process. Article originally written for the Thames Water ...

  • Treatment of a mixed wood preservative leachate by a hybrid constructed wetland and a willow planted filter

    The performance and removal mechanisms of a hybrid constructed wetland (HCW) followed by a willow planted filter (WPF) were evaluated for the treatment of a leachate contaminated by wood pole preservatives (pentachlorophenol (PCP) and chromated copper arsenate) to reach the storm sewer discharge limits. The HCW aimed to dechlorinate the PCP and ...


    By IWA Publishing

  • Treatment and potential reuse of greywater from schools: a pilot study

    This study presented performance data on a low cost and easy maintenance pilot system for on-site treatment and reuse of water collected from wash sinks and fountains, as major sources of greywater (GW) at schools. Various treatment options were studied including screening, sand filtration, chlorination, and UV disinfection operated at different flow rates. Results showed that filtration ...


    By IWA Publishing

  • Effect of total organic carbon and aquatic humic substances on the occurrence of lead at the tap

    Homes with lead service lines (LSLs) in the City of Brandon, Manitoba, Canada, were found to exceed the provincial standard of 10 μg/L for lead in drinking water. Solids identified by X-ray diffraction of LSL scale were Pb5O8 and PbO2, indicating that lead(II) solids in the LSL scale have been oxidized to lead(IV) solids by free chlorine residuals. Natural organic matter (NOM) ...


    By IWA Publishing

  • Case study - CAIROX Potassium Permanganate

    BACKGROUND The Carbondale Water Treatment Plant (Carbondale, Illinois) with a design capacity of 8 MGD and an average flow of 4.6 MGD draws its water from Cedar Creek Lake. Because of moderately high raw water TOC levels (4.3 - 6.5 mg/L) and low alkalinity (36 - 40 mg/L as CaCO3), Carbondale is required to attain 45 percent TOC removal under the Disinfection/Disinfection By-Product ...


    By Carus Corporation

  • Low-temperature effects on the removal of soluble manganese in MnOx(s)-coated media systems

    The purpose of this study was to investigate the role of low-temperature conditions in potentially impacting soluble Mn2+ removal in MnOx(s)-coated media systems. The study involved an extensive examination of water quality and process data for a 10-year period (2005–2014) from the Harwood's Mill Water Treatment Plant in Newport News, VA. Additionally, laboratory-scale shallow depth ...


    By IWA Publishing

  • Degradation of 4-chlorophenol by mixed Fe0/Fe3O4 nanoparticles: from the perspective of mechanisms

    Fe0 nanoparticles have been widely studied for pollution abatement in recent years; however, regarding the mechanism for pollutant degradation, studies have mainly focused on the reductive dechlorination by Fe0, and the dynamic process has not been clarified completely. As reported, some organics could be degraded during the oxidation of Fe0 by O2, and hydrogen ...


    By IWA Publishing

  • A study of the reaction of ferrate with pentachlorophenol – kinetics and degradation products

    Pentachlorophenol (PCP) is a persistent pollutant which has been widely used as a pesticide and a wood preservative. As PCP is toxic and is present in significant quantities in the environment, there is considerable interest in elimination of PCP from waters. One of the promising methods is the application of ferrate. Ferrate is an oxidant and coagulant. It can be applied as a multi-purpose ...


    By IWA Publishing

  • Neuthox improves the water quality by removing unwanted bacteria - Case Study

    NEUTHOX removes biofilm in cooling tower and leaves the water system completely free of unwanted bacteria Using an electrolysis process of saltwater the ECA generator produces the liquid NEUTHOX, which contains hypochlorous acid, and is highly efficient in eliminating bacteria. A biofilm consists of living and dead organic and inorganic material collected on a surface, which in ...


    By Danish Clean Water A/S

  • Oxidative transformation of oxcarbazepine by Cl2, ClO2 and O3: characteristics and pathways

    In this research, the degradation efficiency, mechanism and intermediates’ toxicities of oxcarbazepine (OXC) upon chlorination, chlorine dioxide oxidation and ozonation were investigated. Results showed that three degradation approaches followed second-order kinetics, and ozonation had the highest removal efficiency both of OXC and dissolved organic carbon (DOC). Reaction intermediates were ...


    By IWA Publishing

  • Case study - Veolia MPPE Technology - Groupe Fimalac – LBC- NL

    Chemical storage & distribution Rotterdam Harbor Distribution center for Europe Formerly owned by Dow Chemical MPPE and Biotreatment Delivered by Veolia Operational since 2001 Challenge Small irregular heavy waste stream from tank cleaning Big fluctuating ...

  • KDF 85 Process medium removes iron - Case Study

    KDF 85 Process Medium is an Effective Non-Chemical Water Treatment for Iron Removal and Other Heavy Metal Removal A Kalamazoo, Michigan producer of bottled drinking water uses KDF media as a non-chemical method of removing chlorine and sequestered iron from 7,500 gallons of municipal water daily, extending the operating life of downstream RO membranes by as much as 10 years. Redox media alloy ...


    By KDF Fluid Treatment, Inc.

  • Chlorine removal with KDF 55 - Case Study

    KDF 55 Process Medium Helps with Removing Chlorine in a Municipal Water Treatment Facility A Los Angeles-based maker of fashion jeans uses KDF media instead of chemicals for removing chlorine when treating municipal water in their stone-washing process. High-purity copper-zinc redox water filter media consistently provides 99% of free chlorine removal from water by ...


    By KDF Fluid Treatment, Inc.

  • Reference: Outstanding technology delivers outstanding potable water

    Outstanding technology delivers outstanding potable water High-tech comes to the Sauerland region: To supply potable water, Stadtwerke Sundern uses state-of-the-art technology. When the time came to modernise their three waterworks, the first-class quality of ProMinent's products and systems was the deciding factor. Key figures ...

  • Odor removal by powdered activated carbon (PAC) in low turbidity drinking water

    The potential of powdered activated carbon (PAC) adsorption for odor removal in low turbidity drinking water was investigated. The batch experiments were conducted under various conditions including PAC species, dosage, contact time and dosing point. The effects of pre-chlorination and PAC dosage on turbidity were also studied. Results showed that adsorption was quite vulnerable to initial ...


    By IWA Publishing

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