206 uppsatser · sida 8 av 14
… wetlands that is not built. This correspond to a total loss of increased nitrogen retention capacity between 6,0 and 91,7 tons/year and a loss of increased phosphorus retention capacity between 0,17and 2,1 tons/year in the drainage basins of Skåne. Further the interviews show …
En jämförelse mellan Lilluns ägg och andra svenska äggproducenter
… production with other Swedish egg producers based on the flow of nutrients (nitrogen, phosphorus and potassium) in the egg production systems. The main focus in the report was the utilization rate of the forage and the excess of nutrients per kg egg. Additionally, the purpose …
Hur slagkraftig a?r dagens ha?llbarhetscertifiering och kan den föra?ndra mark- och vattenpa?verkan fra?n odlingarna?
… This was to distiguince potential differences in the budgets of carbon and nitrogen. The largest environmental impacts is due to leakage of nutrients and sedimentation of water streams as well as accumulation of pesticides in the ground, local acidification, compaction of soil …
fallstudie i Värmdö kommun
… The following environmental- and recourse aspects have been studied; Flows of nitrogen, phosphorus, BOD7 and cadmium to recipient; The potential of the different sewage systems to bring plant available nitrogen and phosphorus by residues to arable land, and the amount of cadmium …
… combined with indicator values gives values for light, moisture, rection, nitrogen and how much heavy metals the locations have. The results of this paper show that two locations have decreased in size, two are basically the same and one has increased. The locations that have …
… accounted for are the C/N ratio, total organic carbon (TOC) as well as total nitrogen present (TN) and ?13C in the top ten centimeters of a sediment core retrieved in the Sk?rhamn harbour. All of which gives information of what input is taking place regarding the source of …
I denna studie har funktionen hos sju anlagda våtmarker för behandling av avloppsvatten i Sverige jämförts över tid med avseende på avskiljning av kväve, fosfor och BOD. Syftet var att undersöka våtmarkernas långsiktiga funktion, skötselåtgärder och relaterade kostnader …
modellering och åtgärdssimulering
Under de senaste 300 åren har jordbrukslandskapet i Sverige genomgått stora förändringar. I början av 1900-talet introducerades konstgödslet och efter andra världskriget ökade gödslingen dramatiskt i syfte att maximera produktionen. Detta har lett till att överskottet av kväve …
en analys av orsaker och effekter
… century, Grässjön is also disappearing due to contribution of high rates of nitrogene from a sewage treatment works upstreams, northwards near Lönsboda village. The county authorities need to be informed of former actions in the area to restore the lake as the bird paradise it …
… set in the fuel specification. Sludge from sewage treatment works have a high nitrogen level, high ash and moisture levels and thereby a low heating value. It also contains a lot of mercury. This type of sludge is, unlike the other wastes in this study, homogenous and differs …
… Nykvarn outside of Linköping, Sweden) takes care of wastewater to reduce the nitrogen loads. Measurements were carried out at three different occasions in the summer of 1998 on two sites in the wetland. One site was close to the inflow, inhabited by Lemnaceae, and another site …
… problem for aviation is the great amount of exhaust gases, mainly nitrogen oxides, carbon monoxide, carbon dioxide and hydrocarbons - mostly "greenhouse gases" leading to climate changes. I decided to sort out what is being done to decrease these problems and what regulations …
… reduced by a sufficiently early windrowing or by a well-balanced supplying of nitrogen. The velocity of circumference of the threshing cylinder is determining the emergence of damage on the seeds, while the concave clearance to a greater extent regulates the threshing and …
en simuleringsstudie med modellen SEWSYS
… simulates the stormwater flow and the pollutants total phosphorous, total nitrogen, copper, zinc, lead, cadmium and polycyclic aromatic hydrocarbons (PAH). Samples and analysis for the two areas has been carried out for another thesis work during the same period. The results …
Utvärdering av kapaciteten hos en två-stegs UASB-reaktor för behandling av hushållsavloppsvatten
… pre-treatment and supplementary treatment to reduce the remaining COD and the nitrogen and phosphorus content.
