process ozone monitoring Articles

  • 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

  • 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

  • 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)

  • 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

  • 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 ...

  • Monitoring Environmental Quality

    ' In order to determine the effectiveness of actions to improve environmental quality it is necessary to be able to measure relevant environmental parameters at a level of detail which is accurate enough to distinguish the anticipated changes. However, the establishment and maintenance of monitoring systems is time-consuming and expensive and therefore the scale of such systems needs to be kept ...


    By The World Bank

  • Monitoring - Pollution Prevention Guidelines

    Introduction Pollution Prevention Guidelines to provide technical advice and guidance to staff and consultants involved in pollution-related projects. The guidelines represent state-of-the-art thinking on how to reduce pollution emissions from the production process. In many cases, the guidelines provide numerical targets for reducing pollution, as well as maximum ...


    By The World Bank

  • Meteorological normalisation and non-parametric smoothing for quality assessment and trend analysis of tropospheric ozone data

    Despite extensive efforts to ensure that sampling and installation and maintenance of instruments are as efficient as possible when monitoring air pollution data, there is still an indisputable need for statistical post processing (quality assessment). We examined data on tropospheric ozone and found that meteorological normalisation can reveal (i) errors that have not been eliminated by ...


    By Springer

  • Degradation and changes in toxicity and biodegradability of tetracycline during ozone/ultraviolet-based advanced oxidation

    Advanced oxidation processes (AOPs) composed of O3, H2O2 and ultraviolet (UV) were applied to degrade tetracycline (TC). Degradation efficiency was evaluated in terms of changes in absorbance (ABS) and total organic carbon (TOC). The change in biotoxicity was monitored with Escherichia coli and Vibrio fischeri. The improvement in ...


    By IWA Publishing

  • 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

  • The effect of pre-ozonation and subsequent coagulation on the filtration of WWTP effluent with low-pressure membranes

    The impact of a pre-treatment by pre-ozonation (2–10 mg O3/L) and subsequent coagulation (FeCl3: 2–6 mg Fe3+/L) on the performance of a polymeric ultrafiltration membrane was investigated in lab scale. The performance was assessed by monitoring the flux decline during filtration of secondary effluent in Amicon test cells. During the filtration process no free dissolved ozone was in contact with ...


    By IWA Publishing

  • EPA mandates proper refrigerant gas recovery processes

    New EPA regulations require facilities that use air conditioning and refrigeration equipment to have a refrigerant recovery plan in place. The plan is needed to make sure that any harmful gases that might leak are captured. Refrigerant gases contain hydrochlorofluorocarbons, known to cause severe damage to the ozone layer and to promote global warming. A comprehensive plan is now in place to ...


    By Verisae

  • Control of dangerous substances in discharges and microbiological abatement: European framework and a case study of an ozone disinfection system

    Directive 2000/60/EC requires the achievement of a ‘good chemical status’ for surface water within pre-established dates. Disinfection is needed to achieve compulsory final microbial limit values (in Italy for wastewater discharges the parameter Escherichia coli – EC – is imposed by law with a maximum limit value of 5,000 cfu/100 mL). Liquid waste and disinfection ...


    By IWA Publishing

  • Case study - Ozone sparging closure of an industrial VOC spill site adjacent to a water supply well site

    Description An undocumented surface spill at an active manufacturing facility located adjacent to a public water supply well field released chlorinated volatile organic compounds (PCE, and its breakdown products: TCE, c-DCE, and VC) into soils and groundwater.  The driver for site cleanup was three water supply wells located 200 feet downgradient of the site bounds.  The chosen ...

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