Existing mass balance models for phosphorus were tested for fish farm emissions in eight Northern and Central European lakes. These traditional models overestimated the total phosphorus concentration in these lakes by on average a factor of two. Data from the eight lakes were therefore used to calibrate emission specific models based on the Vollenweider and […]
Författare TORBJÖRN JOHANSSON och LENNART NORDVARG
This is an evaluation of a new method, the denitrification wall, with the purpose of diminishing nutrient content in drainage water from agriculture land use. The denitrification wall consists of a trench filled with soil mixed with sawdust that intersects the drainage pipes.. The concept was applied in the drainage area of River Råån in […]
Författare PÄR PERSSON, TORBJÖRN DAVIDSSON och JONAS SVENSSON
Metals that are dissolved in storm water can be removed by filtrating water through specially constructed filter systems. Pine bark is an interesting material for this purpose, but it needs further investigations regarding its removal efficiency of metals. This paper presents a laboratory study where pine bark was tested to evaluate its efficiency in reducing […]
Författare CARINA FÄRM
Nyckelord (Keyword) Filtration, heavy metals, model, pine bark, run off, sorption isotherms, storm water
Liquids obtained during handling of solid wastes may contain a high concentration of nitrogen (ten times higher than the nitrogen concentration in municipal wastewater). At the same time these liquids contain too low concentration of biodegradable organic material for nitrogen to be removed by conventional denitrification. This paper proposes a new treatment system for leachates […]
Författare ALEKSANDRA NIKOLIC and BENGT HULTMAN
Nyckelord (Keyword) Chemical denitrification; leachate; nitritation; concentration; nitrogen removal; urea.
The effect of fixed media biofilter on the removal of colour was studied in a pilot scale column at the Waterworks in Oskarshamn. The process was applied on a surface raw water with a very high colour content. The results indicated the potential of colour removal and the simultaneous effect on iron and manganese. The […]
Författare HUSAM S.JABUR, CHARLOTTA KARLSSON och JONAS MÅRTENSSON
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