Sökning: "Constructed wetlands"

Visar resultat 31 - 35 av 124 uppsatser innehållade orden Constructed wetlands.

  1. 31. Nitrogen runoff, constructed wetlands and the effect on catch of fish in the Öresund strait

    Master-uppsats, Lunds universitet/Miljövetenskaplig utbildning

    Författare :Saga Hedstigen Sundblad; [2020]
    Nyckelord :seafloor oxygen demand; fish catch; constructed wetland; Earth and Environmental Sciences;

    Sammanfattning : Eutrophication and low dissolved oxygen levels are spreading all over the world, causing changes in fish distribution and decline in fish abundance and catch of fish. This study assesses the current nitrogen (N) surface runoff to the Öresund strait, the seafloor oxygen demand it cause, the subsequent effect on fish catch, and the constructed wetland area needed to retain current N loads. LÄS MER

  3. 32. Återvätning av organogen jordbruksmark: Möjligheter för klimatvinster i Lunds kommun

    Kandidat-uppsats, Lunds universitet/Miljövetenskaplig utbildning

    Författare :Emma Brodén; [2020]
    Nyckelord :cultivated organic soils; rewetting; greenhouse gas emissions; City of Lund; Earth and Environmental Sciences;

    Sammanfattning : Drained organic soils are a big source of greenhouse gas (GHG) emissions. Many of these soils have, historically, been drained to increase the share of agricultural land. In Sweden, they emit around 3.4 million tonnes CO2 and 0. LÄS MER

  4. 33. Sustainability assessment of potential wastewater treatment techniques in Tupiza, Bolivia

    Master-uppsats, Uppsala universitet/Institutionen för geovetenskaper

    Författare :Johanna Burström; [2020]
    Nyckelord :MCA; wastewater treatment; sustainable sanitation; Bolivia; stabilisation ponds; anaerobic reactors; constructed wetland; alkaline treatment of sludge; ammonia treatment of sludge; MCA; avloppsrening; hållbara VA-lösningar; Bolivia; stabiliseringsdammar; anaerobiska reaktorer; anlagd våtmark; alkalin slambehandling; slambehandling med ammoniak; Análisis multicriterio; tratamiento de aguas residuales; saneamiento sostenible; Bolivia; estanques de estabilización de desechos; reactores anaeróbicos; humedales artificiales; tratamiento de lodo con cal; tratamiento de lodo con urea;

    Sammanfattning : Aiming for sustainable sanitation systems can provide benefits among a vast range of Sustainable Development Goals. In this study the sustainability of potential options for renovating or upgrading thewastewater treatment plant in Tupiza, a rapidly growing city in theSouthern highlands of Bolivia, was evaluated. LÄS MER

  5. 34. Påverkan av djup och fosfors tillgänglighet på konstruerade våtmarkers förmåga att avskilja kväve

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

    Författare :Selma Kojic; [2020]
    Nyckelord :constructed wetland; nitrogen removal; phosphorous; eutrophication; agricultural runoff; experimentell våtmark; kväveborttagning; fosfor; övergödning; jordbruksavrinning;

    Sammanfattning : Eutrophication is an expanding issue due to the increase of human-induced nitrogen leakage from agriculture. Eutrophication can lead to severe environmental problems such as exaggerated algal bloom and oxygen deprivation in water courses. One approach to clear away nitrogen is to use constructed wetlands. LÄS MER

  7. 35. An investigation of the Mechanisms Behind the Pharmaceutical Removal in Ekeby Wetland WWTP

    Master-uppsats, KTH/Skolan för kemi, bioteknologi och hälsa (CBH)

    Författare :Paula Luu; [2020]
    Nyckelord :Constructed wetlands; pharmaceuticals; wastewater; removal efficiency; mechanism.; Anlagd våtmark; läkemedel; avloppsvatten; avskiljning; mekanism.;

    Sammanfattning : Pharmaceutical residues are being released into the aquatic environment through domestic wastewater effluents all around the world. Ekeby wetland located in Eskilstuna has been shown to degrade pharmaceutical residues in wastewater but the mechanism of how and where in the wetland these substances are removed were not known. LÄS MER