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-bevarandestrategi eller riskåtgärd?
This study evaluates the retention of nitrogen and phosphorus in four newly constructed wetlands in the municipality of Falkenberg, Sweden. The four wetlands have been selected because they have been specifically constructed with the aim to reduce nitrogen and phosphorus in …
This study evaluates the retention of nitrogen and phosphorus in four newly constructed wetlands in the municipality of Falkenberg, Sweden. The four wetlands have been selected because they have been specifically constructed with the aim to reduce nitrogen and phosphorus in …
en fallstudie i Norrtälje kommun.
… of private sewage systems in Sweden. Discharges of nutrients, especially phosphorus, to the Baltic Sea from these sewage systems are significant. That is why Norrtälje is working actively to improve the standard of these sewage systems. The purpose with this Master Thesis was to …
Betydelsen av antalet beviljade dispenser av stallgödselspridning vid Sagån
… ecosystem. In Mälardalen we find the most eutrophic lakes. Most of the applied phosphorus and nitrogen into seas and oceans comes from agriculture, and the nutrients losses are affected by local weather conditions and soil type. Guidelines for storage and distribution of manure …
fallstudie i Värmdö kommun
… In Stockholm region the 90 000 private sewage systems contribute with larger phosphorus flows to the Baltic Sea than the two biggest sewage plants in the area, Henriksdal and Käppala, contribute together, even though these two plants purify wastewater from more than one million …
… the Baltic Proper and as such of especial interest in retention studies. The phosphorus was chosen as an example of nutrient in the eutrophication process. The purpose of the investigation is to determine the phosphorus retention within the river. Two different models were used …
möjligheter för bebyggelse i Odensala socken
… i.e. reduction of at least 50 % of the nitrogen and 90 % of both the phosphorus and oxygen demanding compounds. However, the reduction reported in different studies varies greatly between them and also between installations in the same study. A system with filter bed combined …
… of the lines of treatment. However the permeate exceeds the emission limits (phosphorus: 0,15 mg/l, nitrogen: 6 mg/l) while concentration in the concentrate is still too low. The limiting factor seems to be phosphorus. This could be solved with pre-precipitation of phosphorus or …
en åtgärd för ökad TOC-reduktion hos Skoghalls Bruk luftade damm
… lead to a larger reduction of TOC, without enlarged quantities of nitrogen/phosphorus in the outgoing water. One of the test pools hold a summer temperature (30°C), and the other test pool hold a winter temperature (10°C). The test was performed this way to see if there would be …
omfattning och miljökonsekvenser
… substances into the surrounding recipient. The log yard run-off contains phosphorus, nitrogen, phenols and organic substances. These substances can cause problems for the surrounding environment. The main objective of this project is to gain an understanding of the wet storage …
en litteraturstudie
… this essay is to find out if liming with Ca(OH2) and CaO can reduce leachingof phosphorus from agricultural land and the problem with eutrophication. This purpose alsoincludes getting knowledge about how to make the phosphorus retained in the soil and beaccessible for the …
En studie för att identifiera områden för prioritering av åtgärder
… by eutrophication. Nyrebäcken has the highest concentrations of nitrogen and phosphorus in the mainstream, then Skintan and last Vinån. Vinån is much less affected by phosphorus than the other watercourses, which may depend on the surrounding landscape and that the edges of the …
var bör de ligga och vilken effekt kan vi förvänta
Construction of wetlands in the agricultural landscape may reduce nitrogen and phosphorus transfer to streams, thereby reducing the eutrophication of lakes and seas. The agriculturalstream Lillån, a tributary to stream Sagån, ends up in Lake Mälaren and is transporting large …
… used in the distillery process. Distillers? grain is rich in protein and phosphorus. The mineral content and amino acid composition of distillers? grain are proportionate to the content and composition in the original grain. Both wet and dry distillers? grain is used as feed for …
… or partially treated, domestic sewage is a major source for discharge of phosphorus (P), which is the nutrient most frequently responsible for eutrophication of most fresh waters and the Baltic Sea. The waste water can be cleaned by filter materials, which have a high …
