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Acidic Wastewater Treatment Applications

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    Determination of acetic acid (acetate anions) in natural, drinking, and waste water

    Introduction

    The method is used for the determination of acetic acid (as acetate ions) in the samples of natural water, drinking water, and waste water by capillary electrophoresis.

    By Lumex Instruments Group based in Mission, BRITISH COLUMBIA (CANADA).

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    Chemical Water Treatment for cleaning

    Deposits in water systems, especially in heat exchangers, result in a significant heat transfer reduction, in low efficiency and a loss of cooling capacity. Some systems, after long operational periods without any water conditioning or with inadequate treatment, need cleaning. Therefore Kurita Water Solutions proposes acidic, alkaline and neutral cleaners to remove deposits, scale, fouling, dirt, grime or impurities.

    By Kurita based in Tokyo, JAPAN.

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    Water Treatment Solutions for Radium Removal

    Radium is found naturally in uranium ores. It is an alkaline earth metal that decomposes in water and  it is over a million times more radioactive than the same mass of uranium. As a radiological hazard that emits alpha, beta, and gamma rays, it is a carcinogen.

    By Adedge Water Technologies, LLC based in Buford, GEORGIA (US) (USA).

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    Lime Milk Pumping

    By Albin Pump SAS based in Montelimar, FRANCE.

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    Lime Cream Pumping

    By Albin Pump SAS based in Montelimar, FRANCE.

  • 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).

  • Mixers, dryers, innovative solutions for starch industry

    Chemically modified starches (from potatoes, corn, tapioca, wheat, peas, and others) are used in papermaking, among other applications, to improve paper strength. The wet process is used most frequently in this case. The starch is slurried in water, then the cationizing agent is added to cause it to react. The starch remains in a suspension throughout the entire process until drying. However the drying method is more economical. In this process, natural starch powder is intensively mixed with the cationizing agent. The etherification reaction then takes place in a reactor. The reactor is connected downstream to a second neutralizing mixer. The starch consistency remains powdery throughout the process.

    By AVA GmbH u. Co. KG based in Herrsching, GERMANY.

  • High-calcium lime slurry for water & wastewater treatment industry

    Our NSF certifications allows our product to be used for both the treatment of drinking water as well as the operation of sewage treatment and bio-solid management.

    By Sudbury Lime Ltd. based in Copper Cliff,, ONTARIO (CANADA).

  • Solutions for wastewater treatment industry

    Sodium Hypochlorite. Sodium Hydroxide (Caustic Soda) 20%-50%. Sodium Bisulfite. Hydrochloric Acid. Lime. Chlorine. Soda Ash. Sulfur Dioxide. Sulfuric Acid. Citric Acid. Aluminum Sulfate. Permanganate.

    By Carus Corporation based in Peru, ILLINOIS (USA).

  • Industrial water Zinc recovery from pickling acid solution

    The zinc chloride is to be removed from pickling acid at 6N concentration. Under these conditions, the ZnCl2 will form a stable complex and may be removed by PuriTech`s ION-IX technology using an anion resin. The resin is then eluted with water.

    By PuriTech Ltd based in Herentals, BELGIUM.

  • Industrial water boiler feed water

    Ion exchange is an effective, versatile means of conditioning boiler feedwater. The term “ion exchange` describes the process : as water flows through a bed of ion exchange material, undesirable ions are removed and replaced with less objectionable ones. For example, in softening processes, calcium and magnesium ions(hardness) are exchanged for sodium ions. In dealkalization, the ions contributing to alkalinity(carbonate, bicarbonate, etc.) are removed and replaced with chloride ions.

    By PuriTech Ltd based in Herentals, BELGIUM.

  • Plating rinse wastewater solution

    Plating rinse wastewater is one of the most common applications for ENCON Wastewater Evaporators. Wastewater from plating rinse tends to be rather corrosive. The chemistries used in the plating process can include a wide range of acids such as nitric acid, chromic acid, hydrochloric acid, sulfuric acid, hydrofluoric acid, as well as other non-acid chemistries like ammonium bifluoride and nickel sulfamate. Typically, the waste stream has a transparent, relatively clean look because they are dilute and the contaminants are in solution.

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

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