Sökning: "Constructed wetlands"
Visar resultat 21 - 25 av 124 uppsatser innehållade orden Constructed wetlands.
21. Modeling BOD removal in free watersurface constructed wetlands with variable residence time-based methods
Master-uppsats, Lunds universitet/Avdelningen för Teknisk vattenresursläraSammanfattning : 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
22. Functions of Wetlands in Sweden : a literature review
Kandidat-uppsats, Stockholms universitet/Institutionen för naturgeografiSammanfattning : The lack of cultural and economic recognition of the significance of wetlands arguably led to theirdevastating and rapid loss compared to other ecosystems. To reverse this trend and establish a reasonablevaluation of wetlands, the foundations of socio-ecological concepts were laid in late 20th century thatsuggested the acknowledgement of the functions, values, and services of ecosystems. LÄS MER
23. Initial nutrient retention capacity in a constructed wetland : Evaluating the effectiveness of a newly constructed wetland to reduce eutrophication symptoms in a Baltic Sea bay in northern Sweden
Master-uppsats, Umeå universitet/Institutionen för ekologi, miljö och geovetenskapSammanfattning : Since the turn of the last century, a substantial increase in nutrient load to the Baltic Sea is apparent. Adding the ongoing environmental change with raising temperatures and increased precipitation, this will continue to have a prominent environmental impact on our coastal ecosystems, especially in northern latitudes. LÄS MER
24. Internbelastningsrisk från våtmarkssediment
Kandidat-uppsats, SLU/Dept. of Aquatic Sciences and AssessmentSammanfattning : Syftet med studien var att kvantifiera internbelastningsrisken i 21 anlagda våtmarker i jordbruksområden runt sjön Mälaren i Sverige. Även att utvärdera hur avrinnings- och våtmarksfaktorer påverkar internbelastningsrisken. LÄS MER
25. Phosphorus accumulation in constructed wetlands : A study of 10 wetlands constructed on agricultural clay soils in Södermanland
Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Institutionen för geovetenskaperSammanfattning : Eutrophication is a major problem causing algal blooms and impaired water quality, especially regarding coastal areas and seas. It is a result of an excessive supply of nutrients such as phosphorus (P), where agriculture accounts for the largest share of the anthropogenic nutrient load. LÄS MER