dissolved nitrate News

  • Capillary electrophoresis method according to EPA 6500 and ASTM D6508-10

    Lumex Instruments introduces a capillary electrophoresis method for determination of inorganic anions; fluoride, bromide, chloride, nitrite, nitrate, ortho-phosphate, and sulfate in drinking water, wastewater and ground water according to EPA 6500 and ASTM D6508-10 test methods. This test method is applicable for ...


    By Lumex Instruments Group

  • News, release of a new groundwater software

    VisualRflow is a completely new reactive transport software, it is as fast as Bioscreen but as powerfull as RT3D. VisualRflow is dedicated ot 2D horizontal saturated flow and transport of dissolved reactive species. It is largely oriented towards natural attenuation, but can deal with other cases. The interface is a simplified pre- and post-processor for Modflow, when flow has been calculated, ...


  • Seeps important in watershed nitrogen retention

    Globally, the mobilization of nitrogen has increased significantly due to human activities, such as industrial and agricultural development. As a result, over the past decades, eutrophication in coastal ecosystems has increased. Watershed nitrogen retention is an important mechanism to decrease nitrogen loading to downstream water bodies. Generally, in the northeastern U.S., the amount of ...

  • New Bionoxsolver(TM) Nox Scrubbing Solution Simplifies Wet Scrubbing System Operation and Reduces Scrubber System Complexity and Cost

    Bionomic Industries, Inc., an industry leading manufacturer of proven air pollution abatement, product and heat recovery technologies, has announced introduction of the first major breakthrough NOx control chemistry for a wide range of scrubber system operations and applications. Unlike typical NOx sulfide/caustic control chemistry, low toxicity BIONOxSOLVER will not liberate flammable and ...


    By Bionomic Industries Inc.

  • HPR-40 MIMS System Assists in Denitrification Studies

    Denitrification is the process carried out by bacteria that converts nitrites and nitrates to nitrogen, nitric oxide and nitrous oxide gases. Two of these gases have been linked with ozone layer depletion and global warming. Denitrification is an anaerobic process and occurs in environments where oxygen levels are depleted, such as within soils and groundwater. The Hiden HPR-40 membrane inlet ...


    By Hiden Analytical

  • Determination of fluoride species in etching baths used in the manufacturing process of solar cells

    Metrohm presents a method for the straightforward ion chromatographic determination of HF, HNO3, short-chain organic acids and H2SiF6 in acidic texturing baths used in the manufacturing process of solar cells. Standard ions such as fluoride, nitrate, acetate and sulfate are determined via suppressed conductivity detection while dissolved silicate is spectrophotometrically detected in the same run ...


    By Metrohm AG

  • Chlorine monitoring in water with high Mn/Fe salts

    In 2012, Intellitect Water launched the new V2 Intellisonde (IV2) in-pipe water quality monitor, which offered two new advantages; retained calibration data and improved chlorine measurement. Since that time, IV2 sondes have been successfully installed around the world offering users easier access to water quality data. However, now that the IV2 sondes have been in operation for nearly a year, ...


    By Intellitect Water Ltd

  • Estuary research project highlights advantages of continuous monitoring

    Researchers from the south coast of England have established a small network of monitoring instruments in Christchurch Harbour and associated rivers to study the effects of weather events on water quality, and to better understand the magnitude and spatial/temporal variation of macronutrient fluxes - nitrogen (N), carbon (C) and phosphorus (P). The project, which is financed by a Natural ...


    By Xylem Analytics

  • Stimulus Funded MIEX® System Improving Quality of Life on Washington’s Coast

    This summer, the City of Ocean Shores, Washington has had more to celebrate than its annual summer kite festivals. The city finally has the new water treatment plant it has been working towards for nearly 20 years, commissioned in time to meet the peak demands of tourist season. Funded by $6 million provided by the ...


  • Membrana and Layne Christensen Company sign limited agreement for VOC, radon removal

    Membrana-Charlotte, a division of Celgard, LLC has entered into a limited exclusive agreement with Layne Christensen Company for Radon and VOC removal for municipal water applications in the continental United States. Liqui-Cel® Membrane Contactors are leading-edge technology in gas transfer applications and are the accepted norm in many markets. As a market leader, Layne has strong ...


  • EPA Encourages Homeowners and Communities to Maintain Septic Systems During SepticSmart Week

    Contamination of surface waters and ground water with disease-causing pathogens and nitrates Excessive nitrogen discharges to sensitive coastal waters Phosphorus pollution of inland surface waters Increased algal growth and lowered dissolved oxygen levels Contamination of shellfish beds and swimming beaches by pathogens “Proper septic ...

  • Treatability study of bioremediation of dinitrotoluene

    Dinitrotoluene (DNT) ground water contamination at the Propellant Burning Ground has been controlled by a pump and treat system since 1990. Alternative approaches to improve the cost effectiveness are under evaluation, including reducing the amount of ground water extraction by treating contaminants in place. Bioremediation has been evaluated and shown to be effective, but required an engineered ...


    By CL Solutions, LLC

  • Treatment options for groundwater focus of 2016 McEllhiney Distinguished Lecturer

    Peter S. Cartwright, PE, named the 2016 McEllhiney Distinguished Lecturer, will present “Water Well Contaminants and Treatment Options,” the National Ground Water Research and Educational Foundation announced today. Cartwright, who owns and operates Cartwright Consulting Co. with offices in Minneapolis and the Netherlands, has been in the treatment side of the water industry since ...

  • Advanced Rio lab warns of Olympic water quality danger

    Scientists at the Federal University of Rio de Janeiro, who have been testing the waters around Rio for the last 20 years, have expressed disappointment with the lack of progress being made in preparation for the 2016 Olympics. Employing advanced technology from SEAL Analytical, the university’s marine biology laboratory has revealed worrying trends for parameters such as ammonia, nitrates ...

  • Process optimisation by Real-Time Control at Taunton STW

    Wessex Water is investing around £20m at Taunton (Ham) sewage treatment works to improve the facilities for wastewater and sludge treatment in a project that is due for completion by the end of March 2015. The upgrade to the works under the DWF Improvements Scheme will increase the site’s treatment capacity whilst also improving the efficiency and quality of the treatment process, ...


  • Understanding Chesapeake Bay nutrient trends

    Reducing the delivery of nutrients to the Chesapeake Bay (USA) is one of the most important components of restoration efforts to achieve a healthy Bay ecosystem. The USGS has developed a new method for tracking the progress toward reducing nitrogen and phosphorus delivery from the watershed to the Bay. According to Robert Hirsch, USGS Research Hydrologist who led the development of this ...


  • Pesticides persist in groundwater, say SSSA

    Numerous studies over the past four decades have established that pesticides, which are typically applied at the land surface, can move downward through the unsaturated zone to reach the water table at detectable concentrations. The downward movement of pesticide degradation products, formed in situ, can also contribute to the contamination of ground water. Once in ground water, pesticides and ...

  • 50 Years of WTW at the IFAT

    The history of the IFAT began in 1966 with 147 exhibitors and 10,200 visitors. 50 years later, these numbers are quite a bit more impressive: As a world fair for environmental technoloqy, the IFAT welcomed 138,000 visitors from 170 countries between May 30 and June 3. WTW was an exhibitor fifty years ago and has been every year since. In our booth, together with our sister company MJK under the ...


    By WTW - a xylem brand

  • Peterborough students celebrate British Science Week with a day at Flag Fen

    The Museums and Schools project is funded by DfE through an Arts Council England programme that has partnered 10 regional museums with national museums with the aim to develop high quality visits and learning opportunities for ...


    By Camlab Limited

  • Water quality is top priority at Brighton aquarium

    The SEA LIFE Centre next to the pier in Brighton is the world’s oldest operating aquarium. Originally designed by Eugenius Birch in 1872, the popular attraction has recently benefited from substantial renovation and now offers a range of new attractions including a Jellyfish Discovery & a Behind the Scenes tour. With hundreds of highly valuable marine creatures to protect, water quality ...


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