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wastewater chlorination Applications

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    Chlorine removal for the wastewater treatment industry

    By Jet Inc. based in Cleveland, OHIO (USA).

  • 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).

  • Chlorine dioxide for industrial water treatment

    Chlorine dioxide is used as a biocide in many industrial water treatment applications including cooling towers, process water and mill water.  Its selective oxidative properties usually results in lower dosages of ClO2 while also achieving improved microbial performance.

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

  • 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).

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    Wastewater solutions for wastewater UV disinfection performance

    Problem: Prior to environmental discharge, wastewater is disinfected to ensure pathogens present in the water are inactivated. Ultraviolet (UV) disinfection is becoming a widely accepted treatment technology for wastewater disinfection due to the deleterious effects of chlorine on aquatic life. The ability for the UV light to penetrate the water is directly related to the concentration of suspended particles and organic matter in water that absorb or scatter the light.

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

  • Parts cleaning wastewater solution

    Parts cleaning wastewater is a common application for ENCON Wastewater Evaporators. Parts cleaning is almost entirely water-based since the Montreal Protocol forced companies to abandon chlorinated fluorocarbons (CFC’s) and solvent degreasers. The wastewater is generally brownish gray and translucent with a soapy appearance. It may have trace settled solids and floating oil.

    By ENCON Evaporators based in Hooksett, NEW HAMPSHIRE (USA).

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    Algae control

    Excessive algae growth can throw even the best water treatment processes out of balance. Algae can clog intake screens, fluctuate pH levels, increase chlorine demand, and negatively affect the taste and smell of water. By blocking sunlight within water treatment tanks, you can stop algae growth, reduce chemical usage, and minimize the formation of disinfectant by-products (DBPs). Temperature is better controlled and maintenance associated with algae cleaning is simplified. The results? Better water treatment and lower operating costs.

    By Geomembrane Technologies Inc. (GTI) based in Fredericton, NEW BRUNSWICK (CANADA).

  • 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 based in Albuquerque, NEW MEXICO (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.

  • Municipal Wastewater treatment for drinking water

    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 based in Albuquerque, NEW MEXICO (USA).

  • 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 quality monitoring systems for wastewater & effluents monitoring industry

    Instruments for monitoring the aeration-process, nitrification and de-nitrification; chlorination and de-chlorination; as well as the final discharge into the environment.

    By SWAN Analytische Instrumente AG based in Hinwil, SWITZERLAND.

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    Oxidation Reduction Potential (ORP)/Redox

    Oxidation Reduction Potential or Redox is the activity or strength of oxidizers and reducers in relation to their concentration. Oxidizers accept electrons, reducers lose electrons. Examples of oxidizers are: chlorine, hydrogen peroxide, bromine, ozone, and chlorine dioxide. Examples of reducers are sodium sulfite, sodium bisulfate and hydrogen sulfide. Like acidity and alkalinity, the increase of one is at the expense of the other.

    By Myron L Company based in Carlsbad, CALIFORNIA (USA).

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    Swimming Pool Water Treatment

    Modern disinfection procedures improve swimming enjoyment. Our UV and ozone systems make swimming pool water hygienically pure. In addition to conventional disinfection with chlorine, unpleasant smells are also avoided, for example.

    By ProMinent Group - ProMinent GmbH based in Heidelberg, GERMANY.

  • Ozone generators for swimming pools & spas application

    Ozone is a very effective alternative to chlorine and other chemicals as a disinfection agent in swimming pools. Ozone can safely prevent the formation of chlorine byproducts, such as chloramines and trihalomethanes which are potentially carcinogenic.

    By Absolute Systems Inc. based in Edmonton, ALBERTA (CANADA).

  • Water Disinfection for Swimming Pools

    Better Water Quality – without the undesired side-effects Characteristic of swimming pools, saunas and spa facilities in the past the were the “chlorine smell” and “red eyes”. They are caused by the disinfectant solution chlorine, which is added to the water in the swimming pools. Even here the REDO method is an alternative that can be applied – REDOpool guarantees a better effect to treating the water, in comparison to the traditional methods and at the same time reduces the unwanted side-effects for the swimmers.

    By REDO Water Systems GmbH based in Groß-Zimmern, GERMANY.

  • 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 based in Albuquerque, NEW MEXICO (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).

  • 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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