excess nitrogen elimination Articles

  • Argon and Nitrogen in Glove Boxes and Blanketed Chambers case study

    Application Moisture is measured in argon or nitrogen when it is used as a blanketing gas in glove boxes and other blanketed applications. Problem The presence of moisture in the blanket gas for a glove box causes serious contamination problems especially when welding or conducting moisture-sensitive chemical reactions. Moisture causes product contamination, ...

  • Addressing the nutrient crisis: evaluation of a biological filter to meet low total nitrogen discharge limits

    New regulations aiming to reduce total pollutant loads entering receiving waters are emphasizing more stringent nutrient discharge limits for wastewater treatment plant (WWTP) effluents. Numerous state Departments of Environmental Quality and Protection have proposed regulations to lower nitrogen pollutant discharge ...

  • Nitrogen and carbon removal thanks to bacterial processes in a single stadium system ( PRiBioAC 3S ) in wastewaters with high organic and nitrose load

    Biologic procedure for nitrogen and carbon removal in a single step system (PriBioAC 3S) from zootechnical sewage with an high organic and nitrogen level. A solution for nitrate problem Paolo Broglio (paolo.broglio@ecologia-applicata.it) - Ecologia Applicata S.r.l. Services for Ecology Scientific Organization of Environmental ...


  • Assessing long-term water quality impacts of reducing phosphorus fertilizer in a US suburban watershed

    Phosphorus run-off from urban lawn care is a significant water quality concern in many US suburban communities. Many state and municipal governments in the USA adopt urban fertilizer laws or ordinances that prohibit the use of phosphorus-containing lawn fertilizers. This study assesses the long-term water-quality impacts of two phosphorus-reduction scenarios in a suburban watershed in Central ...


    By IWA Publishing

  • What to know about tiling when it comes to water quality concerns

    Would you know what agricultural drainage was if you weren’t in the industry? Water quality issues continue to dominate the headlines and agriculture is getting caught in the blame game when water pollution sources are noted. As farmers and drainage contractors, ...


    By Prinsco, Inc.

  • Effect of Process Configurations and Alum Addition on EBPR in Membrane Bioreactors

    ABSTRACTBench-scale studies were undertaken to explore the relative efficiency of three different process configurations for enhanced biological phosphorus (EBPR) removal; the University of Cape Town (UCT) process, the Sammamish Biological Nutrient Removal (SmBNR) process, and the University of Washington Membrane Biological Nutrient Removal (UW-MBNR) process. In this study, they all had the same ...

  • Flexibility Makes Geotube Dewatering Technology Ideal For Processing Facilities - Case Study

    Processing plants around the world all have something in common—they almost inevitably create waste streams that involve large amounts of water which must be treated before it can be released. The sheer volume of the material often means significant expense. And many systems for dewatering are complicated, expensive, and hard to adapt to different plant situations. TenCate develops and ...

  • NOx Scrubbing Technology Breakthrough

    Pacific Rim Design and Development and Dupont are proud to introduce a technology breakthrough in the treatment and safe elimination of problematic nitric oxide (NO) and nitrogen dioxide (NO2 ).  There are six forms of nitrogen oxide (NOx); the drawings to the right show the two most problematic forms.  These two are of particular interest because they are identified as atmospheric ...


  • Least-Cost Approaches to Reducing Acid Emissions

    ' The costs of meeting sulfur emission targets can be high. It is essential, therefore, that countries adopt policies which (a) minimize the net economic and social costs of reducing emissions to the agreed target levels, and (b) maximize the overlap between measures designed to reduce acidifying emissions and those addressing other forms of air pollution. This note discusses alternative ...


    By The World Bank

  • The Chemical Aspect of NOx Scrubbing

    With the passage of the 1990 Clean Air Act Amendments, many chemical and metal industries and utility producers will now be required to further limit the amount of NOx (Nitrogen Oxides) produced. NOx is a precursor to ozone in the atmosphere, and is believed to be a major contributor to acidic deposition (acid rain). Formation of ozone: NOx is produced in a variety of ...


    By CR Clean Air Group, LLC

  • Benefits of the CFC Phaseout

    Benefits of the CFC Phaseout The CFC phaseout is already producing benefits for the environment, businesses, and individuals. This fact sheet explains some of these benefits. Several case studies of successful conversions to alternatives are listed also. Protection of the Ozone LayerThe chlorofluorocarbon (CFC) production phaseout is an important turning point in ...

  • NOx in Non-Utility Industries - Part II - Control options and monitoring methodology

     This the second in a two-part series. Part I, which appeared in our June 2001 issue focuses on air emission origins of nitrogen oxides (NOx) in non-utility industries. Choice of the NOx control technology is dependent on many factors, including regulatory requirements, technical feasibility, cost and public perception. Figure 1, compiled based on publications [1-5], presents a summary of ...


  • Biofiltration systems for the treatment of waste gas from industrial plants

    Bord na Móna Environmental Ltd have considerable experience in the field of biological air filtration (600 installations). Initially, the majority of installations were on Municipal and Industrial Wastewater applications. This was quickly followed by Municipal Solid Waste, an application Bord na Móna jointly developed with its Italian partners Air Clean srl. Since 2000, Bord na Móna have ...


    By Anua - Bord na Móna Limited

  • Introduction to the BioCar Nature Based Transportation Systems

    The people of the world are rapidly growing aware of the full impact of current transport systems upon their safety, economy, health and environment. This has not been lost on the major auto companies who have spent millions of man-hours and billions of dollars over the last decade in pursuit of the Next Generation Vehicle. But they have little to show for their efforts having been increasingly ...


  • Case study - Amine tail gas treatment

    COVERING YOUR TAIL GAS The discovery of new shale formations throughout the world and the development of new drilling technologies have increased natural gas production and prompted government agencies to instigate tighter air-pollutioncontrol regulations on processing operations. Unfortunately, meeting environmental regulations is not a profit-generating endeavor. Simply put, the time ...

  • Growing water shortages, air & water pollution challenge US to take a sustainable approach to the environment

    With 36 states expected to experience moderate to extreme water shortages by the year 2013, the time has come for the United States to rethink its approach to the treatment, storage and reuse of water on a residential, industrial, and municipal level, according to Bord na Móna Environmental Products U.S. Inc. President Shane Keaney. “The aging United States water treatment infrastructure now ...


    By Anua - Bord na Móna Limited

  • Energy from waste: the recycling of limed fleshings

    Leather products have been around a long while - there are those who claim that it is the second oldest business in the world. Going back a few millennia, when our earliest ancestors decided that sitting on hard rock was not a soft option, they turned to other materials in order to create more comfortable seating, as well as warmer bedding and improved clothing. Animal skins became the fabric ...


    By Flottweg SE

  • Connections: Toasty Toes

    After 14 years of living on a houseboat we have now moved into an apartment in a private home. There are many wonderful things about this apartment - the lack of dry rot and any concerns about the wind direction are two of them. Perhaps my favorite is the radiant floor heat. Radiant heat, hot water piped under the floors, keeps your toes and the rest of your body toasty. Water is great for this ...


    By BioCycle Magazine

  • Wireless monitoring for a safe indoor environment

    This article discusses the benefits of wireless technology for continously monitoring the indoor environment. In striving for the construction of energy efficient and cost-effective buildings, the imperative issue of the buildings Indoor Air Quality (IAQ) is often overlooked. This can often lead to a unhealthy indoor environment and even to conditions such as Sick Building Syndrome (SBS) or other ...


    By PPM Technology

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