o3 analyzer Articles

  • Two Detector Solution to Analyzing Sulfur

    Sulfur compounds are reactive, corrosive to pipes, and destructive to catalysts in petroleum refineries. Sulfur emission are strictly regulated globally. When released into the atmosphere sulfur dioxide converts to sulfuric acid resulting in adverse effects on human health and the environment. Sulfur detection is found useful in many other industries; therefore, detection of sulfur compounds in ...


    By Restek Corporation

  • Weekday/Weekend Differences in Ambient Air Pollutant Concentrations in Atlanta and the Southeastern United States

    Abstract The authors quantified changes between mean weekday and weekend ambient concentrations of ozone (O3) precursors (volatile organic compounds [VOC], carbon monoxide [CO], nitric oxide, and oxides of nitrogen [NOx]) in Atlanta and surrounding areas to observe how weekend precursor emission levels influenced ambient O3 levels. The authors analyzed CO, nitric oxide (NO), and NOx ...

  • RO filtration of biologically treated textile and dyeing effluents using ozonation as a pre-treatment

    Bench-scale experiments were conducted to investigate the application of ozonation pre-treatment for biologically treated textile and dyeing wastewater to improve performance of the RO process. Based on ozonation experiments, four specific ozone consumptions (SOC), 0, 0.3, 0.6, 4.0 mg O3/mg DOC0 were chosen for study of the effects of ozonation on the reverse osmosis (RO) process. Membrane flux ...


    By IWA Publishing

  • Effects on Individuals with Cardiovascular Diseases Exposed to Ozone in Mexicali, B.C., Mexico

    Abstract This paper makes a contribution to the study of Environmental Health. This study was done to establish a relation between the ozone levels in Mexicali and residents with cardiovascular diseases (CVD) who attended community clinics (CC's) from 1999 to 2000, which were closed to Enviromental Stations (ES). It was analyzed data of environmental ozone levels and the frecuency of visits of ...


  • Contribution of natural sources to air pollution levels in the EU - a technical basis for the development of guidance for the Member States

    Exceedences of air quality limit values represent breaches of Community law which can have significant legal consequences for the Member States. For some existing limit values, such as those in directive 1999/30/EC (1st Daughter Directive), an exceedence which is caused by particular natural sources can be ignored for the purposes of ensuring compliance with Community law. For example, Article ...


  • 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

  • Tailings Cover Hydrology for the Central Manitoba Mine Site – Undergraduate Thesis for the University of British Columbia

    The hydrology of a proposed cover system, under varying drainage layer conditions, for a mine site rehabilitation project located in Southeastern Manitoba was analyzed with the SoilVision Systems Ltd., SVFlux software. The proposed 1 m thick engineered soil cover included a 0.2 m thick highly permeable basal granular drainage layer, which was replaced with a man-made synthetic ...


    By SoilVision Systems Ltd.

  • Waste Rock Back Analysis

    On October 4, 2004, during field measurements collected in trench LFG-008, a crack developed in the middle of the trench. This occurred during the destruction of the Goat Hill North (GHN) rock pile at the Questa site. The crack varied in width up to a maximum of 100 mm and extended in an arc pattern around the pushed out section of the slope. The slope had been pushed in a convex arc out from the ...


    By SoilVision Systems Ltd.

  • Perfectly clean water - without the use of toxic chemicals - Case Study

    Bacteria-free surroundings breeds healthier and more productive cattle Danish Clean Water A/S is a manufacturer of ECA generators and has successfully marketed and deployed its generator for more than 5 years, sold to more than 20 countries through local partnerships and has thereby gained significant market power. The ECA generator can be used in various industries and production sites, ...

  • Some notes about Fats and Oils in Food and about FAME and FAMEWAX

    In Europe, the last transition periods named in REGULATION (EU) No 1169/2011 on the provision of food information to consumers are running out on Dec. 13th, 2016. Since then, a nutrition declaration is mandatory for nearly all packed food in Europe, wherein the amounts of fat, saturates, carbohydrate, sugars, protein and salt have to be included. The content of the mandatory nutrition ...


    By Restek Corporation

  • BM Respirometry

    BM respirometery is a state of the art technology in where the traditional and most advanced respirometry techniques are gathered in one exclusive design developed by SURCIS Company. BM Respirometry makes use of a single reaction vessel that in certain mode replicates the actions that occur at a treatment plant under the conditions we set for the test. The BM system, under a powerful ...


    By SURCIS, S.L.

  • Hydraulic modeling - Bethel Park Municipal Authority - Case Study

    Treatment plant hydraulics is often overlooked as one of the most important aspects of treatment plant design, especially in plant upgrade scenarios where retrofitting new equipment or processes into the existing treatment train will create additional hydraulic restrictions.  Many existing plants already have a minimal amount of head available for passing peak flows through the system, which ...


    By Innovative Hydraulics

  • Gas Dilution With The Equal Capillaries Technique

    The advantages of the equal capillaries technique are surprising and leads to reach accuracy values of one order of magnitude higher than all the other dynamic dilution techniques. This comparison will be supported by analyzing the accuracy available with two different techniques. Nozzles (sonic or non-sonic) technique With this technique, a series of different size nozzles is used ...


    By Be.T.A. Strumentazione Srl

  • Design and Analysis of a High Pressure Ratio Mixed Flow Compressor Stage

    I. Introduction Smaller frontal area and high thrust to weight ratios of mixed flow compressor stage has resulted in its application for small gas turbine engines in aviation sector [1] . The efficiency and reliability of the compressor depends to a great extent on flow behavior in its flow passage and its interaction between impeller and diffuser. The complex turning of the flow not only ...


    By SoftInWay Inc.

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