Sökning: "treatment wetlands"
Visar resultat 1 - 5 av 31 avhandlingar innehållade orden treatment wetlands.
1. Nitrogen removal in treatment wetlands : Factors influencing spatial and temporal variations
Sammanfattning : Decreasing the nitrogen transport from land to surrounding seas is a major task throughout the world to limit eutrophication of the coastal areas. Several approaches are currently used, including the establishment of wetlands, to decrease the transport of nitrogen. LÄS MER
2. Wastewater treatment in constructed wetlands : Effects of vegetation, hydraulics and data analysis methods
Sammanfattning : Degradation of water resources has become one of the most pressing global concerns currently facing mankind. Constructed Wetlands (CWs) represent a concept to combat deterioration of water resources by acting as buffers between wastewater and receiving water bodies. LÄS MER
3. Floating treatment wetlands for stormwater management : Plant species selection and influence of external factors for heavy metal and chloride removal in a cold climate
Sammanfattning : Stormwater, which consists of rainwater and snowmelt, often contains pollutants from vehicle traffic, building materials, and industries. These pollutants include chloride and heavy metals, which can cause several environmental issues, such as being toxic to biota at elevated concentrations. LÄS MER
4. Treatment wetlands in a tropical climate
Sammanfattning : The decrease of water resources values as a result of eutrophication is a major problem in numerous lakes around the world, including the Great African Lakes. One of the most important tasks to limit this eutrophication, is to decrease the nutrient input from land-based activities. LÄS MER
5. Role of plants in treating metal-polluted waters in wetlands
Sammanfattning : The overall aim of this thesis was to evaluate the role of wetland plants in wetland treatment of metal-polluted waters. The specific aims were to investigate metal uptake in various wetland plant species; whether and how wetland plants tolerate high metal concentrations in their immediate surroundings, and how the pH and metal concentrations of polluted waters influence metal uptake in wetland plants were also investigated. LÄS MER