dissolved oxygen instrument Articles

  • ppb Dissolved oxygen measurement

    Dissolved oxygen (D.O.) measurement is one indicator of water quality because oxygen is a common element contributing to corrosion reactions. This corrosion reaction provides the need for low level D.O. control since dissolved oxygen is responsible for costly replacement of piping and equipment by corrosive attack on metah. what is Dissolved Oxygen? Dissolved axygan (D.O.f is the ...


    By IC Controls Ltd.

  • ppm Dissolved oxygen measurement

    Dissolved oxygen (D.O.) levels are used as a general indicator of water quality. Oxygen is essential to life and vital for countless aquatic forms. D.O. level control is critical in numerous applications ranging from the monitoring of industrial waste water to environmental surveillance. What is Dissolved Oxygen? Dissolved oxygen (D.O.) is the amount of oxygen gas dissolved in a ...


    By IC Controls Ltd.

  • Why it is important to measure Dissolved Oxygen in aeration lanes

    Dissolved Oxygen is a key parameter in the efficient treatment of waste water during the secondary treatment stage; the point at which organic waste is oxidised to form carbon dioxide, water and nitrogen compounds. It is important to act on accurate measurements of Dissolved Oxygen in activated sludge plants for the following reasons: To ...


    By Partech (Electronics) Ltd.

  • Why it is important to measure Dissolved Oxygen in aeration lanes

    Dissolved Oxygen is a key parameter in the efficient treatment of waste water during the secondary treatment stage; the point at which organic waste is oxidised to form carbon dioxide, water and nitrogen compounds. It is important to act on accurate ...


    By Partech (Electronics) Ltd.

  • Product of the Month – Handy Polaris 2 Portable Dissolved Oxygen Meter with Datalogger

    This month the focus is on the Handy Polaris 2 Portable Dissolved Oxygen Meter with Datalogger. Over the summer months we have seen increased interest in the instrument. Warmer temperatures can affect the chemistry, biological processes and dissolved oxygen levels in water, making the Handy Polaris 2 a popular ...


    By Partech (Electronics) Ltd.

  • Optical measurement of oxygen concentration in water

    The optimisation of oxygen transfer is a key element of control and regulation strategies in municipal and industrial sewage treatment plants. In 2003, HACH LANGE became the first instrument manufacturer to launch the LDO (Luminescent Dissolved Oxygen) method for determining dissolved oxygen in water. The LDO technology is based on pulsed blue light, which brings benefits such as high precision, ...


  • Rainy Day Session Instruments

    Rainy Day Session Instruments Rain and melted snow in the United States winter can cause runoff.  Such winter runoff causes the movement of soil or at least cloudy turbid water. This had been known to occur on native undisturbed lands. However, with the growth of the population, we see more and more development ...


    By Geotechnical Services, Inc

  • Energy Optimisation by Determination of Critical Oxygen Point in WWTP Operations

    The control of dissolved oxygen levels in Waste Water Treatment plants has been the subject of considerable technological improvement over the past 2 decades. Typically the energy required for aeration purposes in aerobic activated sludge plants is in the region of 35% to 65% of the total energy costs for the facility. On a global basis energy conservation is taking on greater and greater ...

  • Case study - Pure oxygen injection into a pipeline. Hagerstown, Maryland

    The Problem: In 2010, the Hagerstown Wastewater Treatment Plant in Maryland incorporated several plant modifications, one of which was the conversion of their disinfection process from the use of ozone to that of ultraviolet (UV). In their previous system, due to the ozone being produced by an oxygen-fed ozone generator, the dissolved oxygen (DO) levels of the effluent being discharged into a ...

  • Controlling the COD removal of an A-stage pilot study with instrumentation and automatic process control

    The pursuit of fully autotrophic nitrogen removal via the anaerobic ammonium oxidation (anammox) pathway has led to an increased interest in carbon removal technologies, particularly the A-stage of the adsorption/bio-oxidation (A/B) process. The high-rate operation of the A-stage and lack of automatic process control often results in wide variations of chemical oxygen demand (COD) removal that ...


    By IWA Publishing

  • Instrumentation, methods & analysis tools for comprehensive condenser testing, monitoring & troubleshooting

    Abstract Proper monitoring philosophy in combination with available, accurate and reliable instrumentation for comprehensive condenser performance testing, monitoring and troubleshooting is presented. Practical engineering guidance resulting from the use of advanced instrumentation with proven utility has contributed to the identification of new beneficial performance indicators. ...


    By Intek, Inc.

  • Dairy Crest – Dairy Effluent Treatment Case Study and Partech Water Instruments

    In order to comply with environmental regulations, the food and beverage industry relies heavily on constant monitoring and control of wastewater and effluent, before discharge from the plant. Additionally, if process plants fail to be vigilant when it comes to monitoring all areas of waste treatment, the results can be unsuccessful. Partech’s water instruments are ...


    By Partech (Electronics) Ltd.

  • Salinity and miniDOT

    The miniDOT and other optical dissolved oxygen sensors measure oxygen within a special plastic material that has the property of changing its fluorescence in response to the amount of oxygen present. Oxygen arrives within this material by diffusion from the surrounding environment, which is usually water.  The miniDOT determines oxygen concentration in water dissolved oxygen  by ...

  • Long-Term Water Quality Monitoring Deployments with the Sea-Bird Hydrocat-Ep - Case Study

    The new Sea-Bird Scientific HydroCAT-EP incorporates a suite of physical and biogeochemical sensors into a single, robust instrument designed to maximize water quality parameters and give sustained accuracy. The instrument uses the same high quality Sea-Bird and WET Labs sensors found on their industry    leading    CTDs    and    ocean ...

  • Cardiff WWTW aeration optimisation through scientific control

    Aeration optimisation of a 16 basin SBR plant running in ICEAS (Intermittent Cycle Extended Aeration System) mode was under taken by changing the operating parameters from the traditional design of dissolved oxygen (DO) control to a scientific approach using respirometry. Measuring the critical oxygen point for carbonaceous and nitrification bacteria and combining this with in-situ Oxygen Uptake ...

  • Customer Case - Hampton Roads Sanitation District

    At HRSD, the regional wastewater treatment utility that serves southeast Virginia, process engineers and researchers are working with the development of novel processes for nutrient removal from wastewater. One of the primary focuses is the application of the deammonification process directly in the mainstream. Currently, HRSD is operating a fully integrated pilot process and as part of the ...


    By Unisense Environment A/S

  • Liqui-Cel® membrane contactors can help meet pure steam requirements in pharmaceutical industry

    Pure SteamPure steam is used in sterilization chambers as a common method to sterilize pharmaceutical products, such as equipment parts, instruments, containers and materials for sterile environments. Although regional Pharmacopeias in Europe, Canada, Japan, India and China have minor differences in limits and measurement techniques, they each have similar specifications on pure steam ...


  • Condenser performance monitoring, control and optimization

    Abstract During the past sixteen years, understanding of the condensation process within condensers has been advanced through the introduction of new monitoring and control instrumentation. Data gathered from a variety of condenser types employing these instruments have allowed comprehension of the condensation process to be advanced to the point where underperforming regions of tube ...


    By Intek, Inc.

  • Search Query What are you looking for? How our minidot was swept up in a flood — and survived

    The miniDOT logger is a submersible water logger that measures dissolved oxygen and water temperature. Scientists working in aquaculture are familiar with the quality of PME instruments, which range from small loggers to larger monitoring systems. But what they may not be aware of is that PME’s innovative products occasionally become ...

  • Tech Tip: Deploying Sea-Bird CTD in Ice

    Large numbers of Sea-Bird conductivity instruments have been used in Arctic and Antarctic programs. Special accommodation to keep temperature, conductivity, oxygen, and optical sensors at or above 0° C is advised. Often, the CTD is brought inside protective doors between casts to achieve this. Conductivity Cell When freezing is possible, we ...

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