Sökning: "Nitrogen removal"

Visar resultat 1 - 5 av 119 avhandlingar innehållade orden Nitrogen removal.

  1. 1. Nitrogen removal in treatment wetlands Factors influencing spatial and temporal variations

    Detta är en avhandling från Institutionen för fysik, kemi och biologi

    Författare :Sofia Kallner Bastviken; Linköpings universitet.; Linköpings universitet.; [2006]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Wetlands; denitrification; macrophytes; nitrogen; nitrification; model; treatment wetlands; potential denitrification; NATURAL SCIENCES Biology; NATURVETENSKAP Biologi;

    Sammanfattning : Decreasing the nitrogen transport from land to surrounding seas is a major task throughout the world to limit eutrophication of the coastal areas. Several approaches are currently used, including the establishment of wetlands, to decrease the transport of nitrogen. LÄS MER

  2. 2. Interaction Analysis in Multivariable Control Systems Applications to Bioreactors for Nitrogen Removal

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

    Författare :Björn Halvarsson; Uppsala universitet.; Uppsala universitet.; [2010]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; activated sludge process; biological nitrogen removal; bioreactor models; control structure design; cost-efficient operation; decentralized control; interaction measures; minimum variance control; multivariable control; wastewater treatment; TECHNOLOGY Information technology Automatic control; TEKNIKVETENSKAP Informationsteknik Reglerteknik; Elektroteknik med inriktning mot reglerteknik; Electrical Engineering with specialization in Automatic Control;

    Sammanfattning : Many control systems of practical importance are multivariable. In such systems, each manipulated variable (input signal) may affect several controlled variables (output signals) causing interaction between the input/output loops. LÄS MER

  3. 3. Anammox-based systems for nitrogen removal from mainstream municipal wastewater

    Detta är en avhandling från KTH Royal Institute of Technology

    Författare :Andriy Malovanyy; KTH.; [2017]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Wastewater; Nitrogen removal; Ion exchange; Deammonification; Anammox; Mainstream; Mark- och vattenteknik; Land and Water Resources Engineering;

    Sammanfattning : Nitrogen removal from municipal wastewater with the application of deammonification process offers an operational cost reduction, especially if it is combined with a maximal use of organic content of wastewater for biogas production. In this thesis, two approaches for integration of the deammonification process into the municipal wastewater treatment scheme were studied. LÄS MER

  4. 4. Use of chemical denitrification for nitrogen removal from landfill leachates

    Detta är en avhandling från Stockholm : Mark och vatten

    Författare :Aleksandra Nikolic; KTH.; [2003]
    Nyckelord :Chemical denitrification; conductivity; evaporation drying; freezing thawing; leachate; nitrogen removal;

    Sammanfattning : Landfill leachate usually has a high concentration ofammonium nitrogen and heavy metals, but too low alkalinitycontent for full biological nitrification, as well as a too lowconcentration of biologically degradable organic carbon forbiological denitrification, and at the same time very variablecomposition (quantity and quality) with time. These factorsresult in serious problems for treating leachate with existingsystems. LÄS MER

  5. 5. Use of the solids flux theory for activated sludge wastewater treatment process

    Detta är en avhandling från Institutionen för anläggning och miljö

    Författare :Puhua Li; KTH.; [2000]
    Nyckelord :Activated sludge process; Limiting solids flux; Nitrogen; Removal; Sedimentation; Sludge age; Sludge blanket; Solid flux theory; Volatile fraction; Wastewater treatment;

    Sammanfattning : .... LÄS MER