dissolved oxygen monitor Articles

  • Dissolved oxygen’s effect on ecosystems

    Dissolved oxygen (DO) is a measure of the amount of oxygen dissolved in water. It can be caused by a process of aeration of water flowing through rapids or falls, a byproduct of photosynthesis and the atmosphere. Monitoring DO levels in water may be more important than you think. From dead fish washing up on the shores of Singapore, to historically low levels of brown shrimp, DO is having an ...


    By Aquaread Limited

  • 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.

  • Boiler Dissolved Oxygen Control

    DISSOLVED OXYGEN CHEMISTRY Dissolved Oxygen (DO) is a measure of the amount of oxygen, usually thought of as a gas, that is dissolved in a liquid such as water. Oxygen is essential to life and is also the most common element found taking part in corrosion reactions. DO can be thought of as the fuel needed for the corrosion process to proceed. It is the corrosion reactions that necessitate ...


    By IC Controls Ltd.

  • 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.

  • High frequency monitoring needed to protect UK rivers - Case Study

    The science behind nutrient pollution in rivers is still poorly understood despite the fact that nitrate and phosphate concentrations in the UK’s rivers are mostly unacceptable, although an element of uncertainty exists about what an acceptable level actually is. Key to improving our understanding of the sources and impacts of nutrient pollution is high-resolution monitoring across a broad ...


    By OTT HydroMet

  • 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.

  • Northern Rivers Ecosystem Initiative: Nutrients and Dissolved Oxygen – Issues and Impacts

    Anthropogenic inputs of nitrogen (N), phosphorus (P) and oxygen-consuming material to aquatic ecosystems can change nutrient dynamics, deplete oxygen, and change abundance and diversity of aquatic plants and animals. The Northern Rivers Ecosystem Initiative required a research and assessment program to establish the contribution of pulp mill and sewage discharges to eutrophication and depressions ...


    By Springer

  • 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.

  • Trends in Temperature, Secchi Depth, and Dissolved Oxygen Depletion Rates in the Central Basin of Lake Erie, 1983–2002

    We examined temperature trends in a 20-year set of monitoring records collected at mul- tiple deep-water stations in the central basin of Lake Erie. Data collected were statistically corrected (“deseasonalized”) to remove biases resulting from irregular sampling intervals within years. Depth- integrated summer temperature has increased by an average (±SE) of 0.037 ±0.01°C per year. An observed ...


    By EarthSoft, Inc

  • Monitoring watershed health

    Background Municipal water quality managers recognize the need for data that can be used to monitor and assess the impact of urbanization on the condition of natural watersheds. Storm events, in conjunction with the alteration of native landscape, building of roads and overuse of fertilizer, can contribute to excess nutrients, sediment and other pollutants in environmentally significant ...


    By The OTT Hydromet Group

  • Preparation of slow-releasing oxygen materials and study on their properties

    Slow-releasing oxygen materials were prepared to overcome some limitations regarding the low dissolved oxygen (DO) concentration and the low efficiency of in-situ purification in groundwater. Tests on slow-releasing oxygen materials that could be used to change the reductive environment in groundwater by slowly releasing oxygen were carried out. Oxygen-releasing laboratory experiments were ...


    By IWA Publishing

  • Leachate dissolved organic matter characterization using spectroscopic methods

    This study investigated the use of ultraviolet (UV) and fluorescence spectroscopy to monitor the changes in biodegradability of dissolved organic matter (DOM) in landfill leachates. Experiments to investigate aerobic biodegradation of leachate DOM were carried out using untreated and treated leachate samples collected from two UK municipal solid waste landfills, L1 and L2. Leachate samples ...


    By IWA Publishing

  • Improved UV/O3 method for measuring the chemical oxygen demand

    We improved the ultraviolet (UV)/O3-based method for measuring chemical oxygen demand (COD) in water. An on-line COD monitoring device was developed and the UV/O3 method was used to oxidize sample solutions. A model was established by using support vector machines (SVM) algorithm to estimate dissolved oxygen and CO2 in solutions. Based on the measured data by each sensor ...


    By IWA Publishing

  • Organics Monitoring: A Practical Guide

    Preventing product loss, lowering waste treatment costs, and reducing system maintenance and energy consumption through organics monitoring in the chemical, refining, food, and wastewater treatment industries. Summary Process water and steam condensate contamination includes organic, inorganic, and biological components. Sources of organic contamination include process ...


    By GE Analytical Instruments

  • Remediation of BTEX in Groundwater with LNAPL Using Oxygen Releasing Materials (ORM).

    Abstract: A field scale study was conducted at a former gasoline service station to evaluate the remediation of groundwater contaminated with dissolved benzene, toluene, ethylbenzene, and xylenes (BTEX) using oxygen-releasing materials (ORM). The injection of oxygen through ORM slurry was the remedial alternative chosen to enhance the in-situ microbial degradation of the BTEX in groundwater. ...


    By Regenesis

  • Understanding and Monitoring Hydrocarbons in Water

    Untitled Document 1. Introduction Oil contamination continues to be a very hot topic, due largely in part to recent catastrophic events with shipping ...


    By Arjay Engineering Ltd.

  • Monitoring pH and ORP in a SHARON reactor

    This paper analyses the valuable information provided by the on-line measurements of pH and oxidation reduction potential (ORP) in a continuous single high ammonia removal over nitrite (SHARON) reactor. A laboratory-scale SHARON reactor equipped with pH, ORP, electric conductivity and dissolved oxygen (DO) probes has been operated for more than one year. Nitrogen removal over nitrite has been ...


    By IWA Publishing

  • 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.

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