Sökning: "kväve fosfor östersjön"
Visar resultat 6 - 10 av 35 uppsatser innehållade orden kväve fosfor östersjön.
6. Nitrogen runoff, constructed wetlands and the effect on catch of fish in the Öresund strait
Master-uppsats, Lunds universitet/Miljövetenskaplig utbildningSammanfattning : 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
7. Risk mapping of phosphorus leakage - improved method using a Digital Elevation Model
Kandidat-uppsats, Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskapSammanfattning : Eutrophication is an ongoing problem in the Baltic Sea and is therefore found as a topic of the Baltic Sea Action Plan as well as the environmental goals of Sweden. One source to eutrophication is the leakage of phosphorus from agricultural lands. LÄS MER
8. Organic nitrogen and carbon in Swedish rivers : increasing trends from 1987-2017
Kandidat-uppsats, Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskapSammanfattning : In the past decades, increased organic carbon concentrations have been reported from freshwaters across the Northern Hemisphere. However, there is little knowledge regarding whether or not these changes are linked to increasing concentrations of organic nitrogen. LÄS MER
9. Function of soil-based on-site wastewater treatment systems - Biological and chemical treatment capacity
Master-uppsats, KTH/Mark- och vattenteknikSammanfattning : On-site wastewater treatment systems are among the main Swedish anthropogenic sources of nutrients causing euthropication of the Baltic Sea. Among on-site systems in Sweden almost half have septic tank treatment followed by a soil-based system, in which the wastewater is treated through soil filtration. LÄS MER
10. Utsläpp från svenska reningsverk till Östersjön : Granskning av Henriksdals reningsverk, Ryaverket, Sjölunda reningsverk, Kungssängsverket och Duvbackens reningsverk
Kandidat-uppsats, Högskolan i Gävle/Avdelningen för bygg- energi- och miljöteknikSammanfattning : From domestic and industrial waste water will have to be cleaned before it can be released into lakes and streams again. This purification takes place through various stages of treatment plants. LÄS MER