A hydrochemical model, HBV-N, was set up in a first simple applicarion to simulate the river-borne transport of nitrogen to the Baltic Sea and its main basins. The land area of 1729 000 km2 was divided into 25 subbasins. The input data were coarse and the model was calibrated against long term monthly mean concentradons […]
Författare
ANNA PETTERSSON, MAJA BRANDT and GÖRAN LINDSTRÖM
Nyckelord (Keyword)
Baltic Sea, nitrogen transport, nitrogen load, HBV-N, HBV, modelling, HOME
Årgång
2000
Nummer
1
Utgåva
The Swedish Delegation for Sustainable Technology and Stockholm Water Co. have initiated a competition for the design and construction of small wastewater treatment units. Improvements in environmental impact and potential for nutrients recycling are expected, compared with conventional technology used today, i.e. settling and infiltrarion or filtration beds. Such differenr types of treatment systems are […]
Författare
DANIEL HELLSTRÖM, LENNART QVARNSTRÖM , OLA PALM, ANDERS FINNSON & CARL-MAGNUS PETTERSSON
Nyckelord (Keyword)
On site treatment, package plants, SBR, submerged biofilm reactors, source separadon, chemical precipitation
Årgång
2000
Nummer
1
Utgåva
The economic value of two alternative ways of nitrogen abatement are calculated: recent development of cleaning capacities at sewage treatment plants and ihe use of coasral zones nitrogen sink capacity. The values calculated as cost savings obtained from the alternative technologies. The analysis reveals that the value of technologies increase for higher levels ofnutrienr reducrions […]
Författare
Ing-Marie Gren, Ragnar Elmgren, Anders Engqvist, Ulf Larsson och Henrik Sharin
Nyckelord (Keyword)
economic value, nitrogen abatement, sewage treatment plants, coastal zones
Årgång
2000
Nummer
1
Utgåva
Collection and treatment of the gas and leachate during the active period of a landfill is proposed in the EC landfill direcrives and in the proposal for new landfill directives in Sweden in order to reduce the risk for methane gas emissions and contamination of water resources. The directives propose an increased pretreatment of the […]
Författare
DAVID BENDZ, TORLEIF BRAMRYD, JAN-ERIK MEIJER och TOMMY OHLSSON
Nyckelord (Keyword)
landfill, sustainable, strategy, directive, EU, Sweden
Årgång
2000
Nummer
1
Utgåva
Long-term changes of the chemical composition and biological quality of Lacvian inland waters have been evaluated. Water composition, the major factors influendng water chemistry, and the human impacts were studied to determine the changes after recent reductions ofpollution emissions, particularly nurrient loading, to surface waters. The chemical composition much depends on hydrological factors, which differs […]
Författare
MÄRIS KLAVINS, GUNTA SPRINGE, VALERY RODINOV, IVARS DRUVIETIS , ELGA PARELE and AGRITA BRIEDE
Nyckelord (Keyword)
trends, aquatic chemistry, aquatic biology
Årgång
2000
Nummer
1
Utgåva