272 uppsatser · sida 4 av 19
en fallstudie i Norrtälje kommun.
… of effort to reduce the emissions of nutrients. One major source is waste water systems, especially private sewage systems. These sewages accounts for a very large share of nutrients per capita in comparison with citizens connected to larger sewage treatment plants. Norrtälje …
… OTEC, a technology using the temperature difference between cold deep seawater and warm surface water, can extract the work in the form of electricity. OTEC gives also synergies of drinkable fresh water. The temperature difference has an impact on the efficiency of the …
… OTEC, a technology using the temperature difference between cold deep seawater and warm surface water, can extract the work in the form of electricity. OTEC gives also synergies of drinkable fresh water. The temperature difference has an impact on the efficiency of the …
… bound to clay particles. Erosion of the soil in agricultural areas makes the water turbid and transports phosphorus to the Baltic Sea. The aim of this project was to examine the relationship between phosphorus and turbidity in the coastal streams of Östergötland. The aim was …
växthusgaser, energi- och resursanvändning i modellstudie
The aim of this study was to evaluate the effects on a simulated wastewater plant regarding GHG emissions and use of energy and resources when implementing source separated wastewater systems. The effects were studied for different restrictions of effluent quality and for …
… base. This is due to its influence on the division between surface and deep water as well as the division of areas of accumulation and areas of erosion and transport. The retention times of surface and deep water calculated by the model also is of great importance because of …
… have been plans to establish a shared facility in Lennheden to extract groundwater from the Badelunda esker to provide drinking water for the cities of Borlänge and Falun. The city of Falun is dissatisfied with the quality of its drinking water and the city of Borlänge is …
… of risk for flooding have been developed. In the work, cross sections and the water flow have been measured. Moreover, an echo-sounding have been carried out in Funboån to map the bottom topography. From the bottom map and laser scanned data covering the study area, a terrain …
En jämförande systemanalys avseende exergi, miljöpåverkan samt återföring av närsalter
… two different treatment techniques treating two different types of wastewaters are compared. The considered techniques are conventional (represented by an active sludge process) and the MBRtechnique. The waters treated are a mixed wastewater and wastewater from a separating …
… thebreathability of the fabrics being the main focus of research. The fabrics' waterproofness wastested on new materials and by abrasion including martindale, flexing and washing. The toolthat has been used to measure water-vapour resistance is the skin model. The result …
… ”tube-in-tube” heat exchanger with phase change material in the outer tube and water as the heat transfer fluid in the inner tube. The model is based on the assumption that the phase change is an isothermal process. By the use of assumptions and mathematical correlations, the …
… total energy production with biofuel wich runs a 16 MW bioler giving process water at saturated liquid state. In recent years Vaporel AB has introduced a new tecnique that gives an external generation of steam after boilers. The concept is built on an adiabatic pressure drop of …
… Research Institute, and is intended for use in WATSHMAN ? a tool for watershed management developed at IVL. The model simulates runoff from a catchment based on daily mean values of temperature and precipitation. The GIS input data consist of maps with soil type, land-use …
en inventering av vägtrummor och skyddszoner kring dessa i Uppsala län och norra Västmanlands län
… and depending on what type you choose and how you place the culvert, the watercourse and the water organisms can be harmed in different ways. If you choose the best alternative and place the culvert correctly, migration of aquatic living organisms is possible. Migration barriers …
… status management. Another step towards BIM is to be able to change and revise Water and Sewage 3D-models with HVAC 3D-models, and to be able to detect possible errors in the connection nodes early in the designing stage. In this thesis work, a CAD-model has been created in …
