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Chlorine Dosing Applications

  • Water treatment for water distribution systems

    As a selective oxidizing agent, chlorine dioxide possesses several chemical advantages when compared to the traditional use of chlorine in wastewater treatment. Chlorine dioxide does not hydrolyze in water, and thus it retains its biocidal activity over a broader range of pH. It is also non reactive with ammonia and most nitrogen-containing compounds, and thus effective at lower dose levels than chlorine. It also eliminates phenols, simple cyanides and sulfides by oxidation. Likewise it is effective at odor control and will oxidize sulfides. Chlorine dioxide is also effective at oxidizing iron and manganese compounds.

    By Applied Oxidation LLC based in Chattanooga, TENNESSEE (USA).

  • Water treatment for breweries

    A brewery process presents one of the biggest challenges possible to a microbiological control program. Microorganisms are responsible for both the production and the degradation of the product. Microbial control is also critical for production and filling equipment. A brewing environment offers various applications where chlorine dioxide may be employed, like as terminal sanitizing rinse in the CIP systems or sanitizer for pasteurizers or filler head assemblies.

    By Applied Oxidation LLC based in Chattanooga, TENNESSEE (USA).

  • Industrial wastewater treatment for industries

    MIOX is the lowest cost supplier of chlorine for disinfection and oxidation of wastewater prior to discharge. Mixed Oxidant Solution (MOS) chemistry is more effective at biofilm control, Biochemical and Chemical oxygen demand removal (BOD/COD), breakpoint chlorination of ammonia and hydrogen sulfide (H2S) removal.

    By MIOX Corporation - Johnson Matthey`s Water Technologies based in Albuquerque, NEW MEXICO (USA).

  • Water quality monitoring systems for public pools & sanitary

    Public health authorities in some countries regulate the quality of water in public pools and control water treatment tightly. A typical installation comprises several instruments with a common web-server for access via intranet or internet.

    By SWAN Analytische Instrumente AG based in Hinwil, SWITZERLAND.

  • Chlorine dioxide for municipal wastewater treatment industry

    Wastewater Deodorization: The formation of hydrogen sulfide often poses a problem for municipal wastewater treatment.  Chlorine dioxide, a powerful oxidant, can be effectively used to control noxious, irritating, or pungent odors from many operations.  Moreover, its unique selective properties permit more efficient application at a lower dosage and cost than chorine, hypochlorite, permanganate peroxide or ozone.

    By DuPont Chlorine Dioxide based in North Kingstown,, RHODE ISLAND (USA).

  • Water Disinfection for Municipal Water Treatment

    As one of the world`s most precious natural resources, the reuse of water is becoming increasingly important. MIOX is both the most cost-effective solution and the preferred technology for disinfection and oxidation of wastewater for reuse or reintroduction into the environment. MIOX`s hypochlorite generators offer a safer, technologically superior solution to wastewater treatment, virtually eliminating many of the negative problems associated with traditional chlorine disinfection. Safer, economical and significantly more effective, MIOX is revolutionizing the process of making water safe again.

    By MIOX Corporation - Johnson Matthey`s Water Technologies based in Albuquerque, NEW MEXICO (USA).

  • Legionella Control with Chlorine Dioxide

    Chlorine Dioxide has been shown to be extremely effective in the control of legionella bacteria and the prevention of Legionnaires’ Disease and Feedwater’s patented Activ-ox® system is the easiest and safest way to treat drinking, domestic and cooling water with chlorine dioxide.

    By Feedwater Ltd based in Moreton, UNITED KINGDOM.

  • Chlorine dioxide treatment for potable water

    Chlorine dioxide is an effective tool for the treatment of potable water. It is a powerful disinfectant that nicely balances purification performance against disinfection by product formation. It is one of four EPA approved disinfectants for drinking water with CT values second only to ozone in biocidal efficacy but without the ozonation by-products or high capital expense.

    By DuPont Chlorine Dioxide based in North Kingstown,, RHODE ISLAND (USA).

  • Water quality monitoring systems for high water purifier industry

    The monitoring of “Ultra Pure Water” or “High Purity Water” requires the lowest possible detection limits for process analyzers. Resistivity is often around 18 MΩ. Dedicated instruments can detect infinitely small amounts (ppt e.g. parts per trillion) of ions.

    By SWAN Analytische Instrumente AG based in Hinwil, SWITZERLAND.

  • Water quality monitoring systems for portable water plants

    Low maintenance and reliability are key requirements for analyzers in potable water plants. Cost of ownership is another big issue.

    By SWAN Analytische Instrumente AG based in Hinwil, SWITZERLAND.

  • Cyanide Treatment with Hydrogen Peroxide

    Cyanides are used in a number of chemical synthesis and metallurgical processes (as simple salts or cyanide complexes). As a class, cyanides are highly toxic and must be destroyed or removed from wastewaters prior to discharge. The most common method for treating free or simple cyanide is alkaline chlorination. However, chlorination of cyanide results in highly toxic intermediates (e.g., cyanogen chloride) and, if organic material is present, chlorinated VOC’s. These compounds, together with the residual chlorine, create additional environmental problems. Consequently, there is a growing need for alternative, non-chlorine methods for destroying cyanides. Peroxygen compounds such as hydrogen peroxide, peroxymonosulfuric acid (1), and persulfates (1) are effective alternatives to alkaline chlorination for destroying free and complexed cyanides. The choice of peroxygen system depends on the reaction time available, the desired products (cyanate, or CO2 and NH3), the types of cyanides being treated (free, weak acid dissociable, or inert), and the system economics. Treatment with Hydrogen Peroxide While hydrogen peroxide will oxidize free cyanide, it is common to catalyze the reaction with a transition metal such as soluble copper, vanadium, tungsten or silver in concentrations of 5 to 50 mg/L (2).

    By USP Technologies based in Atlanta, GEORGIA (US) (USA).

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    Electrochemical solutions and water technologies for chlorine & caustic industry

    Our commitment is the development of innovative solutions to ensure greater competitiveness to our customers, through better performances in term of energy savings, investment costs, product quality and environmental impact.

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    Industrial solutions for cooling water contamination

    Problem: Large quantities of water are used for cooling in industrial manufacturing. To prevent scaling, corrosion and biofilm in the cooling system, inhibitors and biocides are regularity dosed. Make-up water is continuously added to the system to balance the loss of water from evaporation. As water is added, the concentration of chemicals is diluted and the quality of water changes.

    By Real Tech Inc. based in Whitby, ONTARIO (CANADA).

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    Gray Water remediation utlizing sodium hypochlorite (bleach) Poly Tanks

    Sodium Hypochorite tanks in double wall (safe tanks), vertical, horizontal, cone bottom or IBC tanks. Poly tanks in sulfuric acid service as well as containment assemblies fully manufactured. Custom Fiberglass (FRP) tanks and on-site fiberglass tank repair of existing FRP tanks.

    By Sierra Sales Double Wall Plastic Tanks based in Perkasie, PENNSYLVANIA (USA).

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    Dosing pumps for water and wastewater treatment industry

    Peristaltic pumps are proven performers in water and waste treatment solving problems including: Dosing and metering treatment chemicals and reagents including ferric chloride (“Ferric”), sodium hypochlorite (“Hypo”), chlorine water, lime (Kalic or Kalkmilch), caustic soda, powder activated carbon and polymers, sludge transfer, filter press feeds.

    By Verderflex Peristaltic Pumps - part of the Verder Group based in Castleford, UNITED KINGDOM.

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    Applications and Air Pollutants Removed in the Pulp and Paper Industry

    Equipment and systems for Kraft and Sulfite mills. Control chlorine and chlorine dioxide emissions from bleaching operations. Brown stock washer emissions. Control particulate emissions from lime kilns, lime slakers, black liquor recovery boilers, furnaces and gasification units. Particulate from bark and sludge boilers and sulfur dioxide and trioxide removal from those sources. Control of hydrogen sulfide, TRS and methanol emissions from LVHC and HVLC gas streams. Complete fugitive lime dust collection systems to handle emissions from conveyors, elevators and feeders. Smelt dissolving tank particulate and TRS gases. Direct contact waste heat recovery. Black liquor evaporation. Treatment and subcooling of boiler and kiln gases to remove particulate, sulfur dioxide and TRS for precipitated calcium carbonate production (PCC). Dust from tissue and paper rollers and dryers. NASH and sodium hypochlorite scrubbing. Waste heat recovery with direct contact heat exchangers.

    By Bionomic Industries Inc. based in Mahwah, NEW JERSEY (USA).

  • Enhanced anaerobic biodegradation for the soil and groundwater industry

    Enhanced anaerobic biodegradation is the practice of adding hydrogen (an electron donor) to groundwater and/or soil to increase the number and vitality of indigenous microorganisms performing anaerobic bioremediation (reductive dechlorination) on any anaerobically degradable compound or chlorinated contaminant. The most commonly targeted chlorinated groundwater contaminants are primarily used in industry as degreasing agents and include: Perchloroethylene (PCE), Trichloroethylene (TCE), Dichloroethylene (DCE), Vinyl Chloride (VC).

    Other anaerobically degradable compounds include: carbon tetrachloride, chloroform, methylene chloride, certain pesticides/herbicides, perchlorate, nitrate, nitroaromatic explosives (TNT, RDX), dyes and chlorofluorocarbons (CFC’s).

    By REGENESIS based in San Clemente, CALIFORNIA (USA).

  • Rapid Site Cleanup, Closure & Resale

    We can help you achieve site closure and enable the sale or redevelopment of your site in a predictable timeframe with highly reliable results. This is made possible by: Our broad array of thermal remediation technologies, each tailored to the site-specific conditions and contaminants; Tested and proven field operations, processes, and teams; Expertise in designing projects to ensure outcomes without the need for further remediation; and, Our ability to assure a shorter project cycle and verification that goals are achieved by sampling before we shut down or demobilize.

    By TerraTherm, Inc. based in Gardner, MASSACHUSETTS (USA).

  • Odor Scrubbers Applications with Hydrogen Peroxide

    Hydrogen Peroxide as a Replacement for Sodium Hypochlorite Hydrogen peroxide may be used in both mist scrubbers and packed tower scrubbers as a replacement for sodium hypochlorite (bleach). Like bleach, the process involves two concurrent mechanisms: 1) absorption of the odors (H2S) into the alkaline scrubbing solution; and 2) oxidation of the absorbed sulfide in solution. Step 1: H2S + NaOH → NaSH + H2O Step 2: 4H2O2 + H2S → H2SO4 + 4H2O Typical dose ratios are 5 parts H2O2 per part H2S or, when used in place of bleach, one gallon 50% H2O2 for every 10 gallons of 15% sodium hypochlorite (NaOCl). This generally translates into a break-even cost scenario. Sufficient caustic soda (NaOH) is added to maintain a pH of 10.0 - 10.5 in the scrubbing solution. There is also in practice a process which uses H2O2 in series with bleach to scrub composting odors. This process relies on a series of three packed tower scrubbers: the first is a pH neutral water wash (to remove ammonia and amine odors); the second uses a conventional caustic/bleach solution in which the bleach is purposely overdosed (to oxidize the complex organic sulfur odors); and the third uses a caustic/H2O2 solution (to remove the unreacted chlorine vapors carried over from the second stage). H2O2 + HOCl → HCl + H2O + O2 Typical dose ratios are 0.5 parts H2O2 per part hypochlorite (OCl-), with sufficient caustic soda (NaOH) added to maintain a pH of 8.5 in the scrubbing solution.

    By USP Technologies based in Atlanta, GEORGIA (US) (USA).

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