phosphorus calculation News

  • Europe`s discharge of nitrogen and phosphorus calculated

    Agriculture discharges the most nitrogen into Europe's coastal seas. Discharges of phosphorus come from treatment works to a larger extent, although in some areas agriculture and forestry are responsible for large discharges. This is shown by a study carried out by scientists at SMHI. For the first time scientists have carried out a complete calculation of the amount of nitrogen and ...

  • The phosphorus index: changes afoot

    Twenty years after its inception, the continued need for water quality improvement has led to a call for further advancement of the Phosphorus Index Phosphorus (P) is both an essential nutrient in agricultural fields and a contributor to poor water quality in surface waters. To encourage improved P management in fields, the P Index was proposed as a risk assessment tool in 1992. After 20 ...

  • More dynamic indicators needed to measure phosphorus’s availability

    Current knowledge on the availability of mineral resources is explored in a recent study, which focuses on phosphorus as a key example. Static measures of availability, such as the consumption-to-production ratio, are useful as early warning signals, the researchers suggest, but more dynamic indicators that consider technological development and population change are needed to better inform ...

  • SCFI Launches New Online Energy Calculator For Wastewater Treatment Professionals

    SCFI has launched a new interactive calculator on its website www.scfi.eu that allows industry professionals to find out in just minutes how much energy can be recovered in their waste stream by using AquaCritox® – the world’s first sustainable sludge destruction technology. By inputting three basic figures, including annual sludge production, dry solids ...


    By SCFI Group Limited

  • Risks of biodiversity loss posed by nitrogen and phosphorus pollution in European freshwaters

    The risk of eutrophication as a result of nitrogen and phosphorus pollution in Europe’s freshwaters fell by 22% in lakes and by 38% in rivers between 1985 and 2011, new research has shown. The researchers analysed data across 88 European river basins using a new statistical approach which could be used to help identify factors which increase eutrophication risks. Nitrogen and phosphorus can ...

  • EPA Seeking Public Comment on Phosphorus Limits for Vermont Segments of Lake Champlain

    The U.S. Environmental Protection Agency (EPA) is making available for public comment the Phosphorus Total Maximum Daily Loads (TMDLs) for the twelve Vermont segments of Lake Champlain. Too much phosphorus pollution is reaching Lake Champlain primarily from the streams and rivers draining into it. The primary concern is polluted runoff – rainwater or snowmelt that drains off of parking ...

  • How much phosphorus pollution makes lakes unsafe for recreation?

    A target level of 20 micrograms of phosphorus per litre of lake water could help keep many lakes safe for recreation by restricting the growth of harmful algal blooms, European research suggests. The scientists analysed the relationship between phosphorus levels in medium- and high-alkalinity lakes, the growth of cyanobacteria blooms and the concentrations of cyanobacteria that trigger World ...

  • Benefits of constructed wetland ecosystem services worth more than double the costs

    The economic benefits of the ecosystem services provided by constructed wetlands far outweigh the costs of maintaining them, new research has confirmed. Analysis of a wetland that treats the third largest lake in Florida, US, shows that it provides ecosystem services worth $1.79 (€1.64) million per year, against costs of less than half that figure. Eutrophication, an excess of nutrients ...

  • EPA Approves Pollution Budget for Restoring Maryland Coastal Bays

    The U.S. Environmental Protection Agency has approved the pollution budget developed by Maryland to reduce nitrogen and phosphorus in Maryland’s coastal bays and tributaries to levels that meet water quality standards. The budget calls for pollution reductions in the coastal bays of up to 35 percent for nitrogen and up to 18 percent for phosphorus. Higher reductions are required in some of ...

  • ASTM D7751 - 11 standard test method for determination of additive elements in lubricating oils by edxrf analysis

    Lubricating oils are formulated with organo-metallic additives, which act, for example, as detergents, antioxidants, antifoaming, or antiwear agents, or a combination thereof. Some of these additives contain one or more of the following elements: magnesium, phosphorus, ...


    By ASTM International

  • Bion Announces Submittal of Data to Support Issuance of Permanent Water Quality Management Permit at Kreider Farms

     Bion Environmental Technologies, Inc. (OTC BB/QB: BNET) announced today the submittal of a permit application to the Pennsylvania Department of Environmental Protection (PA DEP) to support the conversion of its existing 'demonstration' Water Quality Management Permit (WQMP) to a 'permanent' status.  Bion submitted data that demonstrates the Bion bioreactor is converting ammonia ...

  • EPA Maintains Clean Water Act Authority To Write TMDL Plans for Impaired Waters

    The Environmental Protection Agency has told an appellate court that the Clean Water Act has authorized it to set a total maximum daily load plan to restore impaired waters when states are unable to meet their obligations (Am. Farm Bureau Fed'n v. EPA, No. 13-4079, 3d Cir., reorder 4/2/13). In an April 2  ...


    By Bloomberg BNA

  • Wallingford Software releases Version 7.0 of InfoWorks

    Wallingford Software announces today the release of Version 7.0 of InfoWorks, the leading software for modeling infrastructure planning and operational management in water distribution and supply, wastewater management and sewerage provision, river management and coastal engineering. Version 7.0, released as scheduled, is the second new InfoWorks release of 2005, confirming that Wallingford ...


    By Innovyze

  • Geoengineering: may provide help but not the cure to counteract effects of greenhouse gases

    Scientists say large-scale engineering projects designed to counteract the effects of greenhouse gases should not be considered as an alternative to strategies which directly reduce carbon emissions. As complementary schemes, however, they may be of some benefit. Large-scale geoengineering schemes for mitigating climate change have attracted increasing publicity in recent years. But in order to ...

  • Future of the Baltic Sea the focus of new research

    The problems associated with eutrophication have long affected the Baltic Sea. Large blooms of toxic algae, oxygen-free bottoms and changes to composition of species have all impacted on the sea. Four years of research will provide more knowledge about the future of the Baltic. The Baltic Sea is a unique and sensitive inland sea which is heavily influenced by some 90 million people living around ...

  • New sewage sampler enables real-time control

    HACH LANGE has launched an innovative new wastewater sampling system, which will open up a new world of opportunity by enabling water companies to continuously monitor sewage at the plant inlet. In the past, it has been almost impossible to monitor influent because of the physical and biological challenges that sewage presents – ragging, biofouling etc. However, following trials at a ...


  • New food waste framework points to a fundamental rethink of food practices

    To solve the problem of food waste we need to radically rethink how our food is produced and consumed, researchers argue in a recent study. They propose a new framework that considers how to reduce wastage throughout the supply chain. Preventing excess levels of food production and consumption in the first place is its most important step. Food waste is seen by many governments as a priority. ...

  • New Food Waste Framework Points to a Fundamental Rethink of Food Practices

    To solve the problem of food waste we need to radically rethink how our food is produced and consumed, researchers argue in a recent study. They propose a new framework that considers how to reduce wastage throughout the supply chain. Preventing excess levels of food production and consumption in the first place is its most important step. Food waste is seen by many governments as a priority. ...

  • New soil testing kit for third world countries

    Researchers at the University of Maryland and Columbia University have developed a new soil testing kit designed to help farmers in third world countries. On-the-spot soil testing could have major impact in improving crop yields due to poor soils. The kit contains battery-operated instruments and safe materials for agricultural extension agents to handle in the field. They can test for the ...


    By American Society of Agronomy

  • Sizing up our foods nitrogen footprint

    When measuring our food's environmental impact, carbon isn't the only important element to consider. Calculating a food's 'carbon footprint' can tell us how much climate-altering greenhouse gas we emit when growing and transporting it, but estimating the meal's associated nitrogen pollution accounts for the excess nutrients that create oxygen-depleted dead zones in our oceans. Now two ...


    By GLOBE SERIES

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