optical dissolved oxygen sensor Articles

  • Dissolved Oxygen – the discussion moves on

    Do Dissolved Oxygen Sensors need Cleaning? The re-emergence of Optical Dissolved Oxygen Sensors around 6-7 years ago generated a lively and interesting discussion which revolved around the relative merits of Optical and Galvanic Dissolved Oxygen sensors. We understand that opinions will differ, so in order to accommodate our customers preferences we are pleased to offer our OxyTechw² ...


    By Partech (Electronics) Ltd.

  • Dissolved oxygen measurements in aquatic environments: The effects of changing temperature and pressure on three sensor technologies

    Dissolved oxygen (DO) is probably the most important parameter related to water quality and biological habitat in aquatic environments. In situ DO sensors are some of the most valuable tools used by scientists and engineers for the evaluation of water quality in aquatic ecosystems. Presently, we cannot accurately measure DO concentrations under variable temperature and pressure conditions. ...

  • 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 ...

  • Optical DO Sensors Opening Doors to Online Aeration Control

    BACKGROUNDThe benefits of using online, automated control of aeration systems using dissolved oxygen (DO) sensors are well known in the industry and have been widely documented (e.g. Olsson et al, 2005). In most wastewater treatment facilities using activated sludge, the electricity provided to the aeration system is one of the most significant operating costs and a good control system can help ...

  • A method for on-line measurement of wastewater organic substrate oxidation level during aerobic heterotrophic respiration

    A method for on-line measurement of the organic carbon oxidation level (OXC) during aerobic heterotrophic respiration in domestic wastewater was developed and tested. The method is based on batch incubation of sewer wastewater in an intermittently aerated respirometric reactor. Between aeration cycles, measured pH, dissolved oxygen (DO) and dissolved carbon dioxide (CO2) were used to ...


    By IWA Publishing

  • In-situ quality monitoring station in Lower Saxony

    Background 'Duemmer' is a shallow lake in the south-west of Lower Saxony; through the lake flows the river 'Hunte'. The catchment area spans 426 km2. With a surface of 12.4 km2 and an average depth of 1.1 m there is a water volume of approx. 14 million m3. Large parts of the lakeside are a nature reserve and the lake is a popular local recreation area. The lake suffers from strong nutrient ...

  • On-Line Nitrate/Nitrite Probes for BNR Process Control

    ABSTRACTReal time nitrogen monitoring plays an increasingly important role for the successful biological nutrient removal at wastewater treatment plants. Though traditionally dissolved oxygen has been the main process control parameter a greater understanding of the biological mechanisms and process conditions like nitrite/nitrate concentrations to achieve lower effluent values becomes necessary, ...

  • Reliable silica monitoring supports power station efficiency

    West Burton B CCGT is a Combined Cycle Gas Turbine power station near Nottingham in the UK. It has three open-cycle gas turbines capable of generating enough electricity for approximately 1.5 million UK homes. In common with all combustion based power stations, the CCGT has a requirement to monitor silica levels in the Plant’s water and steam processes. Sean Todd, the Plant’s Control ...

  • Water quality in the Arosa Bay

    Background One of the great impediments to further development of shellfish aquaculture in the north-west region of Spain isa perception that industry expansion and tourism could have negative environmental effects on the coastal waters. Especially the bay around Villagarcia de Arosa is very famous because of its excellent areas for shellfish farming. The government of Spain is ...

  • Advanced Water Quality Techniques Course

    Abstract:The development of a strategic water quality monitoring program is based on prioritizing risks to public safety and economic reality. The development of global standardized methods and protocols for automated water quality monitoring would facilitate international communication of water quality information and comparison of standardized methods and protocols. The three primary methods ...


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