agriculture nitrogen discharge Articles

  • Nitrogen and phosphorus pollution alter the mutual relationship between corals and algae

    phosphorus pollution change the relationship between the pistillata and the algae living inside its tissues, a recent study has found. The researchers say the pollutants, mainly from urban and agricultural discharges, affect algae photosynthesis and the essential transfer of carbon from algae to the coral. Nitrogen and phosphorus pollution change the relationship between the tropical coral ...

  • Transition of fertilizer application and agricultural pollution loads: a case study in the Nhue-Day River basin

    Rapid socio-economic development in suburban areas of developing countries has induced changes in agricultural waste and nutrient management, resulting in water pollution. The study aimed at estimating agricultural nutrient cycles and their contribution to the water environment. A material flow model of nitrogen (N) and phosphorus (P) was developed focusing on agricultural activities from 1980 ...


    By IWA Publishing

  • Transition of fertilizer application and agricultural pollution loads: a case study in the Nhue-Day River basin

    Rapid socio-economic development in suburban areas of developing countries has induced changes in agricultural waste and nutrient management, resulting in water pollution. The study aimed at estimating agricultural nutrient cycles and their contribution to the water environment. A material flow model of nitrogen (N) and phosphorus (P) was developed focusing on agricultural activities from 1980 ...


    By IWA Publishing

  • Impacts of housing development on nutrients flow along canals in a peri-urban area of Bangkok, Thailand

    Change of nutrients load and flow according to land-use change induced by housing development was investigated in Bang Yai, Nonthaburi, Thailand, which located in the peri-urban area of Bangkok. Each house in the newly developed residential community was regulated to be equipped with a septic tank to collect night soil. However, greywater and leachate from the septic tank was collected by a ...


    By IWA Publishing

  • Got Milk? Got Wastewater Too! Treatment of Dairy Processing Wastewater

    ABSTRACTA major dairy processing operation owned and operated by the Michigan Milk Producers Association (MMPA) located in central lower Michigan was required to design and construct a process wastewater treatment plant within a 14 month period. The system is sized to treat up to 0.5 MGD of dairy processing wastewater at a biochemical oxygen demand (BOD) concentration up to 1,846 mg/L. Effluent ...

  • Nitrate leaching from a potato field using adaptive network-based fuzzy inference system

    The conventional methods of application of nitrogen fertilizers might be responsible for the increased nitrate concentration in groundwater of areas dominated by irrigated agriculture. Appropriate water and nutrient management strategies are required to minimize groundwater pollution and to maximize nutrient use efficiency and production. Design and operation of a drip fertigation system ...


    By IWA Publishing

  • Aerated biofilter with seasonally varied operation modes for the production of irrigation water

    Water reuse for agricultural irrigation can contribute to the conservation of valuable water resources and opens the possibility to reuse the wastewater's nutrients (N and P) at the same time. As irrigation is usually limited to vegetation periods, effluent requirements for treated wastewater may vary seasonally. A process concept for wastewater treatment with variable operation modes for the ...


    By IWA Publishing

  • Unique Approach for Sizing a Reclaimed Water Spray Irrigation System Maximizes Benefits

    In 2004, the City of Raleigh Public Utilities Department (CORPUD) initiated a reclaimed water spray irrigation system project to irrigate approximately 130 acres of its existing 1,030-acre farmland used in the past to land apply Class B biosolids. Unlike typical land application or reclaimed water irrigation systems, the primary driver was not to minimize surface water discharge, but rather to ...

  • Animal Manure or Sludge Organic Fertilizer Production

    Introduction of Animal Manure or Sludge Organic Fertilizer Production Line Organic fertilizer production line is designed for producing organic fertilizer from animal manure or sludge, without any chemical ingredients. As chickens, pigs have a poor digestion, can only consume 25% of the nutrients, so other 75% of feed nutrients with feces discharge can be produced to the dry ...

  • Closed loop system takes manure and methane

    A CONVERSION plant in Mead, Nebraska is processing manure and methane to create ethanol and compost. According to Nebraska Governor Dave Heineman: “This plant sets a new standard for ethanol production in this state and our nation, and is an example of the innovation needed to take this industry to the next level. It lets America get its automotive fuel from the croplands of the Midwest instead ...


    By BioCycle Magazine

  • An Atlas of pan-European data for investigating the fate of agrochemicals in terrestrial ecosystems

    In 2000, with the enforcement of the Water Framework Directive (WFD) 2000/60/EC the European Commission established a framework for the protection of surface, subsurface and coastal waters. The WFD requires Member States to implement all necessary measures to prevent deterioration of the status of surface water bodies, and to protect and enhance the status of surface water bodies. This will also ...


  • Tapping the potential of codigestion

    Codigestion refers to processing multiple biodegradable substrates (feedstocks) in an anaerobic digestion (AD) system. A more contemporary definition refers to the digestion of a combination of select biodegradable feedstocks with a base substrate that an AD system was designed to handle. The intent is to maximize the production of biogas (i.e., renewable energy) by adding substrates that produce ...


    By BioCycle Magazine

  • Questions and answers about Lake Erie toxic algae

    Hundreds of thousands of people in Toledo, Ohio, and nearby southeastern Michigan were unable to use tap water fromSaturday until Monday morning because of unsafe levels of a contaminant called microcystin in Lake Erie. Here are questions and answers about the situation: Q. What is microcystin? A. A toxin produced by microcystis, a type of ...


    By Associated Press

  • Financing an anaerobic digester

    LENDERS are generally well disposed to projects that diversify revenues while lowering costs and mitigating risks. Add a ready source of equity and you are well on the way toward financing a project that is a win-win proposition for the lender and the project developer. Such is the case with the anaerobic digester project at Geerlings Hillside Farm (GHF). The Geerlings's 8,000-head hog farm is ...


    By BioCycle Magazine

  • Disposal Company Expands Composting Operations

    Since 1997, Texas Disposal Systems, Inc. (TDS) - an independently owned solid waste company located near Austin, Texas - has operated a composting division, Texas Organic Products (TOP). In our previous BioCycle report ( -Composting Is Alive and Well In Central Texas, - October, 1997), we described how TOP evolved after starting an initial grinding and static pile composting operation at our ...


    By BioCycle Magazine

  • Composting Livestock Mortalities

    Performance, composting methods, environmental impacts and biosecurity of the process are evaluated for emergency disposal of cattle by research team at Iowa State University. A THREE-YEAR study was commissioned by the Iowa Department of Natural Resources to evaluate the practical feasibility, performance, environmental impacts and biosecurity of using composting for emergency disposal - should a ...


    By BioCycle Magazine

  • Compost Plays Key Role in Green Roof Mixes

    Untitled Document ...


    By BioCycle Magazine

  • Understanding Compost Tea

     Understanding Compost Tea COMPOST TEA describes many different preparations made using compost as a starting material and producing a liquid extract or in some cases a “liquid version” of the original compost. There are many home-designed pieces of equipment and some commercially available equipment made to produce compost tea. New ideas abound on how to fabricate the better tea-maker and ...


    By BioCycle Magazine

  • Commercial Experiences :Time for (compost) Tea in the Northwest

     Understanding Compost Tea COMPOST TEA describes many different preparations made using compost as a starting material and producing a liquid extract or in some cases a “liquid version” of the original compost. There are many home-designed pieces of equipment and some commercially available equipment made to produce compost tea. New ideas abound on how to fabricate the better tea-maker and ...


    By BioCycle Magazine

  • Biocycle World

    OPTIONS FOR MANAGING COMPOST LEACHATE DURING EXCESSIVE RAINFALL CONDITIONSAn Information Sheet prepared by The Composting Association in the United Kingdom gives an overview of available options for managing “liquor” (leachate) produced at composting sites - especially following the excessively rainy spring/summer of 2007. “Compost leachate” can be described as water that has changed in ...


    By BioCycle Magazine

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