Sökning: "Water cycle"
Visar resultat 16 - 20 av 371 avhandlingar innehållade orden Water cycle.
16. Water erosion modeling using fractal rainfall disaggregation- a study in semiarid Tunisia
Sammanfattning : In the Tunisian semiarid area, water erosion processes have led to negative economic and environmental consequences in a context of limited water resources. To characterize and predict these degradation phenomena, a comprehensive high-resolution data base on erosive rainfall, together with siltation records for 28 small reservoirs were analyzed. LÄS MER
17. Performance Assessment of Wastewater Treatment Plants : Multi-Objective Analysis Using Plant-Wide Models
Sammanfattning : As the knowledge about anthropogenic impacts of climate change has grown, the awareness of the contributions from treatment of wastewater has widened the scope for wastewater treatment plants (WWTPs). Not only shall ever stricter effluent constraints be met, but also energy efficiency be increased, greenhouse gases mitigated and resources recovered. LÄS MER
18. Urine separating wastewater systems : experiences of design and nitrogen conservation
Sammanfattning : Urine separating (US) wastewater systems, where urine is collected and used as a fertiliser, may be a strategy to achieve a high degree of nutrient recycling from human waste to agriculture. The Swedish experiences of US systems show that the design of the toilets and the sewers are of great importance to achieve a working system. LÄS MER
19. Climate change and urban drainage : future precipitation and hydraulic impact
Sammanfattning : Increasing global mean temperature influences the hydrologic cycle. In the 21st century, hydrologic change featuring more heavy precipitation events is very likely according to the UN Intergovernmental Panel on Climate Change, IPCC. This change will have a great impact on urban environments and infrastructures. LÄS MER
20. Urban drainage and climate change : impact assessment
Sammanfattning : According to the Intergovernmental Panel on Climate Change (IPCC, 2007), the global mean temperature has increased by 0,7 °C during the last 100 years and, as a consequence, the hydrological cycle has intensified with, for example, more intense rainfall events. As urban drainage systems have been developed over a long period of time and design criteria are based upon climatic characteristics, these changes will affect the systems and the city accordingly. LÄS MER