Sökning: "Phosphorous removal"

Visar resultat 6 - 10 av 33 uppsatser innehållade orden Phosphorous removal.

  1. 6. The role of agricultural drainage in controlling the effectiveness of two-stage ditches in Sweden

    Master-uppsats, SLU/Dept. of Soil and Environment

    Författare :Neerajaa Nagarajan; [2021]
    Nyckelord :Subsurface drainage; Absorbance flourescence spectroscopy; Suspended sediments; NO3N; NH4N; PO4P; TP values; DOM indices;

    Sammanfattning : Increased agricultural activities are causing eutrophication in downstream water bodies. To mitigate nutrient leaching from cropland, various in-field and edge-of-field practices have been implemented. LÄS MER

  3. 7. 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

  4. 8. An evaluation of the treatment performance of a ten year old stormwater biofilter in Sweden

    Uppsats för yrkesexamina på avancerad nivå, Luleå tekniska universitet/Institutionen för samhällsbyggnad och naturresurser

    Författare :Sara Eklund; [2020]
    Nyckelord :Biofilter; Water Quality; heavy Metals; Nutrients; Stormwater Treatment; Sweden; Tyresö; Biofilter; Vattenkvalitet; Tungmetaller; Näringsämnen; Dagvattenrening; Sverige; Tyresö;

    Sammanfattning : Urban runoff may be contaminated with, for example, metals, nutrients and sediment. Generally, such runoff enters waterways and oceans without any type of treatment. Bioretention systems can be used to protect the aquatic environment since one of their main objectives is to remove pollutants from stormwater. LÄS MER

  5. 9. Mapping of spontaneous biological phosphorous removal in MBR-process

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

    Författare :Benjamin Fridh; [2020]
    Nyckelord :Polyphosphate poly-P ; Phosphorous;

    Sammanfattning : An unexpected biological removal of phosphorous in IVL Hammarby Sjöstadsverket pilot membrane bioreactor (MBR) wastewater treatment process was investigated by three distinct methods. a) Investigation and quantification of the biological phosphorous uptake (bio-P) capacity by phosphate release tests (PRT), b) validation of bio-P occurrence by granular polyphosphate (poly-P) staining and microscopy and c) metagenomic community structure analysis to map the sludge habitat. LÄS MER

  7. 10. Skyddsvärda kärlväxter i Haväng och Vitemölla strandbackar : – utbredning, hot och skötsel

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

    Författare :Linnéa Persson; [2017]
    Nyckelord :sand steppe; calcareous grassland; semi-natural grassland; sandy grassland; sandstäpp; kalkgräsmark; sandmark; betesmark;

    Sammanfattning : Semi-natural grasslands are one of the most threatened habitats in Scandinavia. The grassland in this study is situated in the northern part of the nature preserve of Haväng och Vitemölla strandbackar in the province of Skåne and consists of grey dunes and a pasture which partly consists of calcareous grassland and the vegetation type sand steppe which is very rare in Sweden. LÄS MER