chlorine reagent Articles

  • Chlorine mystery solved

    Following the installation of in-pipe drinking water quality monitoring sondes, distribution engineers discovered an occasional significant disparity between the Intellisondes’ data and results from grab samples tested by a photometer tablet (DPD) method. For most of the time, there was close agreement between the two methods, but periodically, the photometer results varied wildly, whilst ...


    By Intellitect Water Ltd

  • Amperometric Free Chlorine Measurement without pH Compensation

    Accurate measurement and control of free chlorine in water is critical in many applications. Amperometric sensors are a popular alternative to colorimetric analyzers since the measurement is continuous and no reagents are required, however most sensors are extremely sensitive to pH fluctuations and have a limited pH range where they will function. Expensive pH measurement and control is one ...


    By Walchem, Iwaki America Inc.

  • Hydrogen Equivalents: Comparison of Simple Electron Donors to EHC In-Situ Chemical Reduction (ISCR) Reagents

    Biodegradation via reductive dechlorination processes occurs when microbes directly remove chlorine atoms from a chemical in order to derive energy from other organic compounds. This occurs under reducing, anaerobic conditions. A more effective remedial strategy, however, entails in situ chemical reduction (ISCR) using EHC as the reductant. As described herein, EHC™ is the patented combination of ...


  • High range chlorine testing – what are the options?

    Higher range chlorine solutions are typically used for disinfecting products but standard chlorine meters often cannot measure to higher ranges. For example the Hach Pocket Colorimeter II for chlorine measures to a maximum of 2mg/L, and the ...


    By Camlab Limited

  • Dehalogenation

    Introduction: Contaminated soil is screened, processed with a crusher and pug mill, and mixed with reagents. The mixture is heated in a reactor. The dehalogenation process is achieved by either the replacement of the halogen molecules or the decomposition and partial volatilization of the contaminants. Base-catalyzed Decomposition (BCD) Base-catalyzed ...

  • Analysis of PCB in water using the Dtech test system

    MATRIX: Water ANALYTE: PCB LIMIT OF DETECTION: Color Card: 100 ppb (as aroclor 1254), DTECHTOR meter: 50 ppb (as aroclor 1254) BACKGROUND: This application describes a field screening method for determining PCB concentrations in water. A 1:2 dilution of the sample in methanol is made to minimize adsorptive losses. A ...


  • Aqua magazine features quotes from ITS Vice President

    Testing water seems like it should be quick and easy. You just dip a strip anywhere in the pool water and read, right? Wrong. If you’re giving your customers the best service you can, you know it’s not that simple. In fact, there are a number of critical factors to keep in mind as you test pool water, so with the help of a few industry experts, AQUA has compiled a list of 10 water ...

  • Can I expand my Checkit Test kit to measure other parameters?

    Q: I already have a Checkit Test kit and now I want to expand it to measure another parameter – what’s the best way to do this? A: The Lovibond Checkit Test kits can easily be expanded to cover new parameters with a Testpak Testpak add-on packs let you test a new parameter without purchasing a whole new kit – ...


    By Camlab Limited

  • Pasco County Uses Total Life Cycle Costing to Select Chloramination Analyzers

    Pasco County, Florida Water Utilities serves its customers with water from its 58 permitted wells blended with the water supplied by its large regional supplier, Tampa Bay Water. In 2002 Tampa Bay Water converted to monochloramine disinfection because of its advantages over free residual chlorine. Monochloramine is more stable and better extends the disinfectant residual throughout the ...

  • In Situ Remediation of PCE at a Site With Clayey Lithology and a Significant Smear Zone

    Groundwater at the former Serry’s Dry Cleaning site in Corvallis, Oregon, was impacted by chlorinated volatile organic compounds (CVOCs). The primary CVOCs impacting the site include tetrachloroethene, trichloroethene, dichloroethene, and vinyl chloride, which were detected at concentrations up to 22,000, 1,700, 3,100, and 7 μg/L, respectively, prior to treatment. Large ...


  • The use of antibacterial activity of ZnO nanoparticles in the treatment of municipal wastewater

    Nanotechnology holds great potential in advanced water and wastewater treatment to improve treatment efficiency. Zinc oxide nanoparticles (ZnO NPs) have received considerable attention due to their unique antibacterial activities toward various microorganisms that are commonly found in the environment. In the present study, ZnO NPs were synthesized through both mechano-chemical and ...


    By IWA Publishing

  • Technology Spotlight: BIONOxSOLVER NOx: An Eco-Friendly Scubbing Solution

    NOx scrubber installations employing Bionomic Industries' BIONOxSOLVER have proven to be simpler, safer and considerably more cost effective than systems using sodium sulfide or hydrosulfide scrubbing reagents. Sodium sulfide and hydrosulfide are DOT libeled hazardous compounds that require dealing with major worker safety issues. They are extremely corrosive, causing difficulties in safe ...


    By Bionomic Industries Inc.

  • A Citizen`s Guide to Chemical Dehalogenation

    What is chemical dehalogenation? Chemical dehalogenation is a chemical process to remove halogens (usually chlorine) from a chemical contaminant, rendering it less hazardous. Halogens are a class of chemical elements that include chlorine, bromine, iodine, and fluorine. Polychlorinated biphenyls are halogenated compounds that once were used in high voltage electrical transformers because they ...

  • PlumeStop Colloidal Biomatrix White Paper

    Securing rapid contaminant reduction and accelerated bioremediation using a dispersive injectable reagent Executive Summary PlumeStop Colloidal Biomatrix (PlumeStop) represents a new (patent pending) technology innovation designed to address the challenges of excessive time and end‐point uncertainty in groundwater bioremediation. The technology secures rapid ...


    By REGENESIS

  • Buy Smarter – what questions should you ask when buying a Spectrophotometer?

    Spectrophotometers are relied on by a wide range of laboratories, for tests ranging from specific parameters, like chlorine or metals concentrations, right through to complex analyses of reaction kinetics. When choosing a spectrophotometer the range of specifications and price is vast, so take the time to list the features you need before you buy and make sure you choose the right one. ...


    By Camlab Limited

  • Unique technology for monitoring piped water

    INTELLITECT WATER has launched a unique, highly innovative drinking water monitoring technology that will revolutionise the delivery of drinking water. The new technology monitors the quality of water in pipeline distribution networks and for the first time provides reliable data to protect the integrity of the water quality, to enhance customer satisfaction and to improve operational efficiency. ...


    By Intellitect Water Ltd

  • Managing Water Pollution

    Untitled Document Equipment and ideas abound for cleaning up plant wastewater and polluted groundwater Groundwater, surface water, wastewater, drinking water: ...


  • Analysis of Anionic Contamination & General Quality Testing in Water from Sewage Treatment Plants and Industrial Discharge & Effluents by Colorimetry

    Problem The high concentration of Industry, Agriculture and People in and around the United States has changed the “nature” of our environment. There are Toxic Metals coming from various metallurgical processes; Plating, Foundry, Smelting, Milling, etc., which are readily determined by Atomic Absorption Spectroscopy (AAS). Volatile Organics from the many Petrochemical-based operations are ...


    By Buck Scientific Inc

  • Q&A with Dr Ashi Tudugalle

    Ashanthie Tudugalle (Ashi) is the newest member of the DelAgua team and is the company’s Technical Services Executive. Ashi recently completed a PhD at the University of Surrey in Microbiology & Immunology where she spent the last 6 years conducting research into microbial diseases. Ashi has vast experience ...


    By DelAgua Group

  • On-Line Nitrate/Nitrite Probes for BNR Process Control

    ABSTRACTReal time nitrogen monitoring plays an increasingly important role for the successful biological nutrient removal at wastewater treatment plants. Though traditionally dissolved oxygen has been the main process control parameter a greater understanding of the biological mechanisms and process conditions like nitrite/nitrate concentrations to achieve lower effluent values becomes necessary, ...

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