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pH & ORP Monitoring 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).

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    Process Analytics - Wastewater Applications

    Control of wastewater is increasingly becoming important to avoid potential environmental and increasing legal consequences. Accurate pH, O2, conductivity and turbidity measurements are critical in modern wastewater treatment. METTLER TOLEDO offers reliable, cost-effective solutions to control industrial effluents.

    By Mettler - Toledo Int. Inc based in Greifensee, SWITZERLAND.

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    pH/ORP Sensors for Metallurigical Applications

    Importance of pH Measurement - Hydrometallurgical concentrating and refining applications require pH/ORP sensors to withstand aggressive environments while maintaining accurate measurement. Processes such as cyanide leaching (e.g gold) and solvent extraction (e.g. copper, nickel, zinc) require pH and ORP to be at very specific values to yield the desired chemical species. pH may need to be controlled as precisely as ±0.05 for some processes. Even where this level of precision is needed, process environments are typically extremely aggressive to the sensor.

    By IC Controls Ltd. based in Orangeville, ONTARIO (CANADA).

  • Wastewater treatment for the winery

    The waste water from the transformation process in wineries has a high organic material content, as well as large pH variations that can be harmful to the environment. This water treatment must be carried out by using the appropriate processes.

    By Aguambiente based in La Cistérniga, SPAIN.

  • Wastewater treatment for the tank cleaning

    The waste water from the transformation process in wineries has a high organic material content, as well as large pH variations that can be harmful to the environment. This water treatment must be carried out by using the appropriate processes.

    By Aguambiente based in La Cistérniga, SPAIN.

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    ph determination for soil testing

    Determination of the pH value provides information about the acid or base action of the soil solution. This in turn is enormously important for the nutrient supply and microbial activity of the soil. For example, many metals (trace elements) are considerably more mobile in acidic soils. If the soil pH values are very low, toxic levels can soon be reached and these can damage the roots of plants. On the other hand, excessively high pH values quickly lead to a shortage of trace elements because of immobilization.

    By Metrohm AG based in Herisau, SWITZERLAND.

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    Process Analytics - Chemical Processes

    METTLER TOLEDO/INGOLD solutions cover a wide range of process conditions found in chemical processes. Our products master even most demanding chemical environments with high temperature and pressure - the industry proven design ensures high safety and reliability. Certificates as ATEX, FM, CSA, 3.1B are available with our products to comply with plant safety requirements. Our application solutions can be integrated into plant wide process control and asset management systems.

    By Mettler - Toledo Int. Inc based in Greifensee, SWITZERLAND.

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    Pool Water Testing / Spa Water Testing

    Anyone and everyone who is responsible for operating and maintaining a swimming pool or spa has to test, monitor, and control complex, interdependent chemical factors that affect the quality of water bathers are immersed in. Additionally, aquatic facilities operators must be familiar with all laws, regulations, and guidelines governing what these parameters should be.

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

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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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    pH value and conductivity measurement for power plants

    The pH value and the conductivity have to be determined quasi-continuously at numerous locations in a power plant. The pH value is a key parameter to control the amount of lithium hydroxide that has to be added to the primary circuit of a pressurized water reactor; in water steam circuits, the pH value controls the amount of added amines. The conductivity indicates the amount of dissolved minerals. It is a measure of the water purity and is one of the most important parameters for any chemical control program in a power plant. It is determined at numerous sampling points in the power plant, for example, in the cooling water circuit, in feed and makeup water, at the outlet of the condensate pump, and in the primary circuit of a pressurized water reactor.

    By Metrohm AG based in Herisau, SWITZERLAND.

  • Energy management

    With energy costs skyrocketing, companies are looking for ways to optimize energy usage and cut costs, but maintain production output. Companies now capture details of energy use, such as peak and non-peak use and type of fuel used— natural gas, steam, coal, etc. There are different programs such as Energy Star that companies are using for guidance and reporting.

    By Perillon Software Inc. based in Acton, MASSACHUSETTS (USA).

  • Energy reduction and coagulation process control for wastewater treatment industry

    One of the biggest costs for water-water treatment is energy consumption; the cost of which is likely to escalate with increased demand. Ineffective process control may not only be costly but environmentally impacts though the inefficient use of an un-renewable resource. Furthermore, poor process control in one area may also impinge on neighbouring processes ultimately affecting effluent water quality.

    By Pollution & Process Monitoring Ltd based in Sevenoaks, UNITED KINGDOM.

  • Wastewater treatment for the lacteal industry

    The most significant problem in the dairy sector is the high concentration of fats and oils involved. This kind of water involves various pH values and peaks in temperature. These characters make a complex treatment system necessary.

    By Aguambiente based in La Cistérniga, SPAIN.

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    Waste Water Treatment

    Very low-impact treatment for waste water. Our water treatment technology delivers thorough yet environmentally friendly waste water treatment. What's more, with precisely metered additives and optimised processes, you also save money.

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

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    pH monitoring in water for pulp and paper mills

    By IC Controls Ltd. based in Orangeville, ONTARIO (CANADA).

  • Process monitoring and controlling for wastewater treatment industry

    Automation can save money, optimise a process and give warning of potential breeches of discharge consent. However, instrument selection is fundamentally important if a control system is to function efficiently. The measurement device must accurately and quickly respond to process variations and it must be reliable in operation if the control system is to function as intended. Designed properly, energy and chemical use can be significantly reduced, saving money and ultimately improving effluent quality.

    By Pollution & Process Monitoring Ltd based in Sevenoaks, UNITED KINGDOM.

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    Laboratory Analytical - pH-Measurement Application

    The right System for the right Application. By choosing the right electrode, instrument and accessories customers can build a dedicated system for their application. A system capable of giving accurate and repeatable results time after time.

    By Mettler - Toledo Int. Inc based in Greifensee, SWITZERLAND.

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    Water Testing for Textile Manufacturing

    The textile manufacturing industry encompasses many and diverse processes that rely heavily on the use of water, energy, chemicals, and other resources. Wet spinning, sizing, desizing, scouring, bleaching, mercerization, dyeing and printing are just a few. Monitoring and controlling the pH, TDS/Conductivity/Salt Concentration, ORP (REDOX), and Temperature of the aqueous solutions used in these processes conserves costly resources, controls quality, and reduces the amount of pollution that must be treated before discharge of effluent wastes. This can be done manually with handheld instruments or automatically with in-line monitor/controllers.

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

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    Fountain Solutions

    Accurate fountain (dampening) solution concentration control is essential for consistent, high-quality results in lithography. Low concentration can cause drying on the non-image area of the plate resulting in tinting, scumming, blanket piling, etc. High concentrations, on the other hand, bring about over-emulsification of the ink. This results in weakening of color strength and changes in ink rheology (body and flow properties). Correct concentration will allow the non-image areas of the plate to be appropriately wetted.

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

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