Sökning: "Free water-surface constructed wetlands"

Visar resultat 1 - 5 av 10 uppsatser innehållade orden Free water-surface constructed wetlands.

  1. 1. Constructed wetland for post-treatment of phosphorus in wastewater : An initial assessment of potential design and application to a small-scale water treatment plant in Åre municipality, Sweden

    Kandidat-uppsats, Mittuniversitetet/Institutionen för naturvetenskap, design och hållbar utveckling (2023-)

    Författare :Johan Arnemo; [2023]
    Nyckelord :: cold climate; ecological engineering; free water surface wetland; horizontal subsurface wetland; phosphorus treatment;

    Sammanfattning : In recent years, the treatment of phosphorus in Nyland's water treatment plant (located in Åre municipality) has been substandard. The problem has persisted despite attempts to lower the concentration to meet the emission requirements. LÄS MER

  3. 2. Modeling BOD removal in free watersurface constructed wetlands with variable residence time-based methods

    Master-uppsats, Lunds universitet/Avdelningen för Teknisk vattenresurslära

    Författare :Degefu Yohannes Sebro; [2021]
    Nyckelord :BOD removal; Free water-surface constructed wetlands; VART-BOD; models; dynamic diffusion zone; Technology and Engineering;

    Sammanfattning : Constructed wetlands (CWs) have been applied for several years in the removal process pollutants from secondary treatment plants and stormwater. In this paper, the Variable Residence Time (VART) model for solute transport in streams was extended to simulate the BOD removal process in free water surface flow constructed wetlands (FWS CWs). LÄS MER

  4. 3. The Seasonal Dynamics of Removal of Nitrogen in Free Water Surface Constructed Wetlands in cold climate

    Magister-uppsats, Högskolan i Halmstad/Akademin för ekonomi, teknik och naturvetenskap

    Författare :Chang Ge; [2019]
    Nyckelord :Temperature; Variation; Sewage; Denitrification; Carbon source;

    Sammanfattning : In Sweden and other Nordic countries, Free Water Surface (FWS) constructed wetlands are widely used for advanced sewage treatment. This study was performed in an experimental wetlands system in order to research the seasonal dynamics and interferences in N removal under cold climate condition. LÄS MER

  5. 4. Mikroplast i dagvatten och spillvatten : Avskiljning i dagvattendammar och anlagda våtmarker

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Luft-, vatten- och landskapslära

    Författare :Robert Jönsson; [2016]
    Nyckelord :microplastics; stormwater; urban runoff; sewage; wastewater; constructed wetlands; stormwater ponds; mikroplast; dagvatten; spillvatten; anlagda våtmarker; dagvattendammar;

    Sammanfattning : Mikroplast, här definierat som plastobjekt mindre än 5 mm, befaras kunna göra stor skada på vattenlevande djur. Fram tills idag har studier av mikroplastreduktion främst utförts i kommunala avloppsreningsverk där mycket av plasten avskiljs. LÄS MER

  7. 5. Removal efficiency of indicator organisms and tetM prevalence in enterococci in a constructed wetland for wastewater treatment

    Kandidat-uppsats, Örebro universitet/Institutionen för naturvetenskap och teknik

    Författare :Linnea Olsson; [2013]
    Nyckelord :Removal efficiency; constructed wetland; indicator organisms; Enterococccus; tetM gene; wastewater treatment;

    Sammanfattning : Indicator organisms like coliforms, E. coli and enterococci are normally associated with the intestinal tract of warm-blooded animals, and can thus be used for indicating fecal contamination of water. LÄS MER