110 uppsatser · sida 7 av 8
En aktörsanalys
… valuebut they also bring problems. As an example, the loss of nitrogen and phosphorusfrom agriculture and urban society's sewage systems contributes to some of today?smajor problems in water environment. Another problem associated with plantnutrients is that finite recourses are …
… wateris pumped into storage. It was found that the amount of nitrogen (N) and phosphorus (P) that had been gatheredin the different ponds varied a lot between ponds, due to differences in nutrient levels in the streams and todifferences in when ponds were filled. A maximum of 98 …
… wateris pumped into storage. It was found that the amount of nitrogen (N) and phosphorus (P) that had been gatheredin the different ponds varied a lot between ponds, due to differences in nutrient levels in the streams and todifferences in when ponds were filled. A maximum of 98 …
En studie av Dyåprojektet i Nynäshamns kommun
Övergödning, eller eutrofiering, är ett av de största miljöproblemen i Östersjön och orsakas av förhöjda näringshalter i vatten. Eutrofieringen beror till stor del av näringsförluster från åkermark (Bernes, 2005, s. 83). För att sänka näringshalterna i vatten kan ett flertal …
Sveriges miljömål ”Begränsad klimatpåverkan” beskriver ambitionen att fram till år 2020 ska ha minskat utsläppen av växthusgaser med 40 % gentemot år 1990. Ett sätt för Sverige att lyckas med de uppsatta målen är att utveckla biogasproduktionen. Potentialen för biogasproduktion …
… to grow appear in too small quantities in mires, especially potassium (K) and phosphorus (P). Ash from the combustion of biomass contains these elements and is therefore suitable as a fertilizer. Initiations of such projects usually entail high investment-costs and careful …
… nitrate, phosphate and chlorophyll. The sediments were analyzed for nitrogen, phosphorus, water and organic level and the benthic organisms were determined to species when possible. The levels of nitrate, phosphate and chlorophyll were correlated with each other but also with …
… nitrate, phosphate and chlorophyll. The sediments were analyzed for nitrogen, phosphorus, water and organic level and the benthic organisms were determined to species when possible. The levels of nitrate, phosphate and chlorophyll were correlated with each other but also with …
… WWTP´s to alter eutrophication in aquatic systems through better nitrogen and phosphorus removal. An increasing number of WWTP´s have acquired biological nitrogen and phos-phorus removal. A by-product of this type of biological treatment is the formation of nitrous oxide, which …
HYPE-modellen utvecklades som ett hjälpmedel för att uppfylla målet om att alla svenska vattendrag ska ha uppnått åtminstone god ekologisk status år 2015, enligt EU:s ramdirektiv för vatten. I HYPE-modellen delas avrinningsområdet in i markklasser, som definieras utifrån …
en sammanställning av data från 130 åkerjordar
Phosphorus (P) is an essential nutrient but a surplus could lead to eutrophication. Furthermore, the minerals used to produce the mineral phosphate is a non renewable resource. There are in other words several reasons to reduce the leakage of P and the agriculture is one …
en förstudie i Västmanlands län
… of environmental benefits these are a greater immobilization of nitrogen and phosphorus as well as decreased maintenance requirements. The ditch evaluation method MADRAS is here considered to be a practical tool to be able to gather quantifiable measure of the ditch failing …
I Sverige förekommer strikta krav på fosforrening av avloppsvatten och detta har bidragit till att kemisk fällning har kommit att dominera som reningsmetod för fosfor vid svenska avloppsreningsverk. Fällningskemikalier är dyrt för reningsverken att köpa in och ger negativ …
… can be excess of energy, excess or deficit of minerals such as calcium and phosphorus or deficits of protein. The rapid growth can also make the large-breed puppies predisposed to some diseases affecting the skeletal and joints. These problems can occur for different reasons …
en analys av försöksserien "Exploatering av höga fosfortillstånd"
… - A pH above 6.0 cannot guarantee a stable P-AL value in an unfertilized but phosphorus-rich soil. - The P-AL of unfertilized soils decreased faster at lower soil pH than at higher pH. - In the replenishment treatment (B) the rate of P-AL decrease seems to fall at a pH of 6.5 …
