169 uppsatser · sida 5 av 12
… in the pipes close to waste rock and slag most certainly consists of surface water that runs off from the heaps on top of the hill. This is demonstrated by the high metal content of the surface run off. According to calculations on mixing, the groundwater at the shore is made up …
… leads to more uniform water infiltration. Further on, beds have lower soil surface area due to its shape, and therefore, retain water more efficient. In the field trials, which were carried out at the Stjärnarp Estate near Halmstad, potatoes were grown in beds alongside a …
En pilotstudie vid Univates, Lajeado ? RS Brasilien
… they need to reduce BOD, COD and nitrate of the water going to recipient. A subsurface flow wetland (SSF) can be a good choice. In order to be able to design an efficient SSF it is important to understand how the grain sizes of a substrate affect the reducing of pollutants in …
En analys av energibesparande åtgärder samt uppvärmnings- och kylsystems driftkostnader och koldioxidutsläpp
… heating and absorption coolingDistrict heating and low temperate surface water cooling Energy use, operation costs and carbon dioxide emissions were calculated for the current heating systems and the three alternatives including cooling. The ground source heat pump for heating …
… agriculture and have been found above the Water Quality Standards in Swedish surface waters for several years during environmental monitoring. The highest concentration found in surface waters for esfenvalerate exceeded the NOEC and therefore negative effects on Daphnias can be …
ger besöket någon kunskap om mjölkproduktion?
… agriculture and have been found above the Water Quality Standards in Swedish surface waters for several years during environmental monitoring. The highest concentration found in surface waters for esfenvalerate exceeded the NOEC and therefore negative effects on Daphnias can be …
en bakgrund till alléns framtida utveckling
… agriculture and have been found above the Water Quality Standards in Swedish surface waters for several years during environmental monitoring. The highest concentration found in surface waters for esfenvalerate exceeded the NOEC and therefore negative effects on Daphnias can be …
comparisons with estimates of concentration addition and independent action
… agriculture and have been found above the Water Quality Standards in Swedish surface waters for several years during environmental monitoring. The highest concentration found in surface waters for esfenvalerate exceeded the NOEC and therefore negative effects on Daphnias can be …
scenarier för efterbehandling och gestaltning av Aitikgruvan, Gällivare
… of the tailings will be divided by embankments and get four different water surfaces. By this way the water table will be raised in a large part of the tailings. It will facilitate the growing conditions of the surface and further prevent oxidation of the tailings. The design …
ett laboratorieförsök för att öka förståelsen för fosfordynamiken inom växtodlingen
… be released from a ley with frozen grass and clover during the winter. If surface runoff would occur from 10 % of the surface, leaching from plant material could contribute with more than 0.2 kg of phosphorus loss per hectare of farmland.
… be stored in stable environmental conditions to prevent new precipitations and surface salt precipitations would be removed mechanically. A future research project was proposed where the effects of chelating agents would be observed on previously treated, waterlogged …
… reactive filters through the processes of ions binding to active sites on the surface of the filter materials, or by formation of insoluble precipitates. The ability of CaO-treated granulated blast-furnace slag, iron oxide coated sand, olivine and nepheline to remove seven heavy …
utformning av Gjutarplan i Kallhälls centrum
… of ways water can be used and managed at sites lacking open, greensurfaces.The title "intelligent water design" should evoke the reader’s thoughts concerning intelligentaspects of water. Text, images and the design proposition give hints about these aspects.In the first part of …
… least 70 % arable land, to represent wetlands created to remove nutrients. The surface area should exceed 0,5 hectare and the inlet-nitrogen concentration should be around 5 mg N-1. This report investigates nitrogen and phosphorus retention in two wetlands, Härstad and Åmot in …
Optimering av beredningsparametrar för titandioxidbeläggning på polyestersubstrat ämnad för vattenrening
… essay work organic contaminants are removed from water using textiles, whose surface is coated with nanoparticles of titanium dioxide. When titanium dioxide is illuminated with UV radiation a photocatalytic reaction occurs, which in turn degrades substances such as bacteria and …
