process ozone monitoring Articles

  • Determination of transport processes of nocturnal ozone in Istanbul atmosphere

    Ozone, usually having a minimum value at night, often increase its concentration level which is known as nocturnal ozone. In this study, the magnitude, frequency and timing of nocturnal ozone maxima were determined between May and September for four years (2001-2004) for stations in the Asian and European sides of Istanbul, Turkey. The magnitude and frequency of late and early peaks for peak ...


    By Inderscience Publishers

  • Hotels Put Ozone to Work

    Growing operational costs and lower-than average occupancy rates spurred Apple Farm Inn and Suites, San Luis Obispo, Ca., to explore economic and facility-efficiency benefits obtained through the installation of an ozone laundry system. At the Apple Farm Inn laundry facility, an evaluation lasting several months was conducted in late 2006 into 2007, comparing the costs of laundering by ...


    By ClearWater Tech LLC

  • Ozone Based AOP process for refractory COD reduction in industrial waster water

    Introduction In recent years improvements  in ozone based advanced oxidation technology efficiencies have lowered capital and operating expenses, improving the viability of the use of ozone as the main oxidant. An investigation into alternatives for refractory COD removal which is economically attractive and do not produce sludge lead to an evaluation of ...


    By ESCO International (EI)

  • Introduction to Ozone Injection Technology

    Untitled Document Ozone is a highly reactive chemical that has proven to be effective in destroying a wide variety of organic chemicals, including MtBE and chlorinated VOCs. ...

  • Ozone-depleting substances 2014

    Aggregated data reported by companies on the import, export, production, destruction, and feedstock and process agent use of ozone-depleting substances in the European Union Background The Montreal Protocol on Substances that Deplete the Ozone layer, which entered into force in 1989, aims to protect the stratospheric ozone layer by phasing out more than 200 ...

  • Automatic Ozone Mapping in France with ISATIS

    In France, air quality data are acquired by associations in charge of the air quality monitoring (Agences Agréées pour la Surveillance de la Qualité de l’Air - AASQA) These associations use the automatic procedures of ISATIS to daily update the pollution maps they publish on their websites. These automatic procedures make use of batch and allow to save time in the cartography because they enable ...


    By Geovariances

  • Pilot scale experiments on surface water treatment sequence including ozonation and adsorption processes

    The paper presents results of the experimental studies on combined ozonation and activated carbon adsorption processes at the Water Treatment Plant (WTP) at Cracow (Poland). The study focused on the selection of an appropriate location of an ozonation process within the treatment scheme and on the choice of activated carbon grade for adsorption. Analysis of process efficiency in the proposed ...


    By IWA Publishing

  • Air pollution by ozone in Europe in summer 2005

    Ground-level ozone is one of the air pollutants of most concern in Europe. Ozone pollution is produced by photochemical processes involving nitrogen oxides and volatile organic compounds in the lower parts of the atmosphere. Ozone levels become particularly high in regions close to high ozone precursor emissions and during summer when stagnant meteorological conditions with high insolation and ...

  • Oxidative degradation of COD in Petrochemical facility using Ozone-based advanced oxidation

    The aim of this study was to investigate the use of ozone-based advanced oxidation processes for the oxidative destruction of COD in a petrochemical facility. Several  AOP experiments were carried out in order to select and optimise the successful treatment option. A LABO3-AOP pilot unit was used where filtered wastewater (COD 1250 ppm) was circulated throughout the AOP reactor and ozone ...


    By ESCO International (EI)

  • Pilot Plant Investigation of Ozone Disinfection of Physicochemically Treated Municipal Wastewater

    Wastewater Treatment Plant (MUCWTP) to assess the feasibility of employing a full scale ozone disinfection system.Wastewater characteristics such as turbidity, COD, TOC, BOD, pH, ORP and suspended solids were monitored to assess their effect on ozone disinfection.  Fecal conforms (FC) were used as indicators to measure disinfection performance. Ozone disinfection was capable of reducing the ...

  • Online Analyzers Improve Control of Chloramination Processes in Milwaukee

    The Milwaukee Water Works is a national leader in providing high quality drinking water and monitoring water quality. Since 1998, it has invested $227 million in its infrastructure, from treatment plants to distribution systems, to ensure high quality drinking water and reliable supply. The Milwaukee Water Works treats Lake Michigan water with Ozone gas as a primary disinfectant because it ...


    By ASA Analytics

  • Photodegradation of 4-chloronitrobenzene in the presence of aqueous titania suspensions in different gas atmospheres

    The photocatalytic degradation of 4-chloronitrobenzene (4-CNB) was carried out using Degussa P25 TiO2 as photocatalyst in three different gas atmospheres: nitrogen, oxygen, and ozone. The total organic carbon (TOC) and inorganic anions including chloride, nitrite, and nitrate anions were measured to monitor the mineralization processes, while the degradation of 4-CNB and the formation of ...


    By IWA Publishing

  • UV-radiation 1983–2003 measured at Norrköping, Sweden

    Total ozone has been monitored with high accuracy at many sites for a relative long period of time. This is not the case for UV. The main reason is that UV is difficult to measure accurately. Extensivemonitoring started first during the 1990s. However, there are some data series still in operation that were initiated at earlier dates. This paperwill discuss one such series from Norrk€oping, ...


    By Springer

  • In-line ASTM- and hazen-color measurement in refineries and chemical industry

    In many production processes of the chemical, petrochemical and pharmaceutical industry, color is an important parameter for the quality of the product or the production process. Might be the exact color value, might be the requirement of an ideally colorless product, might be the color range in a specific production step of a product. Examples are decoloration processes as in phthalic anhydride, ...


    By SIGRIST - PHOTOMETER AG

  • Some early beginning of global warming, its causes, and how we will yet GREEN our earth

    Global warming is the result of mankind’s greed and selfishness. We have known it was going to catch up with us since I was in college in the early 1950's. We were aware fluorocarbons were destroying the ozone layers, yet we were continuing to dump refrigerants into the atmosphere without regard of how they would destroy the beautiful world God created for us. The Corporations that produced the ...


  • How Does a Gas Analyser Work?

    Whatever you want to detect, you need to identify a property of the object that is easy-enough to measure. When it comes to monitoring and analysis of gaseous species (atoms or more commonly molecules), it turns out that it often is possible to utilize the optical properties of the gas. You need a light source, a light detector, and a characteristic behaviour of the gaseous species in question ...


    By Opsis AB

  • Global megatrends assessment - Extended background analysis complementing the SOER 2015 `Assessment of global megatrends`

    Context and use of this report In March 2015, the European Environment Agency (EEA) published its five-yearly flagship report, The European environment — state and outlook 2015 (SOER 2015). The report provides a comprehensive assessment of the European environment's state, trends and prospects, and places it in a global context. It informs European environmental policy ...

  • Real-time TOC tightens effluent control at Greencore

    A food manufacturing facility in Selby has installed a new continuous TOC (Total Organic Carbon) monitor, ‘the BioTector’ which has dramatically improved the site’s capability to refine and improve the plant’s wastewater treatment process. As a result the plant is better able to quickly respond to changes in the influent. Greencore Foods is a leading player in the food ...


  • Case Study: Northern Sonoma County APCD Healdsburg, CA

    In 2009 when Air Quality Specialist George Erdman took over management of his air district’s four station monitoring network located north of the SF Bay Area in Sonoma County, it was clear the entire 35 year old network needed to be overhauled. Not only did equipment need replacing but the way in which data were collected, reviewed and reported needed modernizing as well. After extensive ...


    By Agilaire, LLC

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