The changes in the state of equilibrium between the two common Baltic sea-algae Cladophora glomerata and Ceramium tenuicorne as a result ofeutrofication and the discharge of metals has been studied. The results show that C. glomerata is more capable than C. tenuicorne to utilize an enhanced content of nutritive substances for growth. C. glomerata shows […]
Författare
MARTIN EKLUND
Nyckelord (Keyword)
Algae, C. tenuicorne,C. glomerata, Baltic sea, eutrophication, competiton
Årgång
1998
Nummer
1
Utgåva
Stockholm Water Company operates two waterworks, Norsborg och Lovö. Both treat raw water taken from Lake Mälaren with the following process: coagulation with aluminium sulphate, sedimentation, rapid sand filtration, slow sand filtration and desinfection with chloroamine. A pilot plant scale test was performed at Lovo waterworks during spring 1996. The main objective with the study […]
Författare
JOHANNA BLOMBERG
Nyckelord (Keyword)
drinking water, coagulation, rapid sand filtration, ferric chloride, NOM, alcalinity.
Årgång
1998
Nummer
1
Utgåva
The River Emån is the largest watercourse in the south-eastern part of Sweden and it’s also one of Sweden’s most valuable rivers, both the river and parts of its surroundings, being classified as of National importance for nature conservation and cultural history. The catchment area of the river however is affected by a number of […]
Författare
DEA CARLSSON, ERIC HAGLUND, STELLAN HAMRIN, ÅSA JOHANSSON, STEFAN SVENAEUS, LARS THORELL och BO TROEDSSON
Nyckelord (Keyword)
The river Emån, river basin, environmentally sustainable development
Årgång
1998
Nummer
1
Utgåva
Scientists at the Royal Institute of Technology and members of the Swedish Water Environmental Council have completed a pre-investigation concerning the conditions for export of water on a large scale from Sweden and Finland. Different aspects associated with water export were studied within the frame of the pre-investigation. They involve global and regional needs of […]
Författare
OVE STEPHANSSON och BÖRJE BERGMAN
Nyckelord (Keyword)
water shortage, pre-investigation, the Dalälven river, water export
Årgång
1998
Nummer
1
Utgåva
There is a growing need and demand for the removal of nutrients from the wastewater of isolated households and small rural communities; ecological engineering through natural and constructed wetland systems shows promise in meeting stringent wastewater treatment criteria. Wetlands constructed with different hydraulic designs have shown a range of nutrient removal efficiencies. Vertical stratification has […]
Författare
NEDA FARAHBAKHSHAZAD and GREGORY M. MORRISON
Nyckelord (Keyword)
Ecological engineering, wastewater treatment, constructed wetlands, subsurface flow wetlands, vertical flow wetlands, nutrient removal
Årgång
1998
Nummer
1
Utgåva
Consideration of the impact of preferential flow is important for accurate predictions of phosphorus (P) losses for structured soils. The possibilities for adapting the GLEAMS model to preferential flow were investigated for two tile-drained structured clay soils, one in south-west Sweden and the other in central Sweden The results indicated that GLEAMS was capable of […]
Författare
BARBRO ULEN, ADEL SHIRMOHAMMADP and FARUK DJODJIC
Nyckelord (Keyword)
dissolved phosphorus, drainage losses, modelling, particulate phosphorus, preferential flow.
Årgång
1998
Nummer
1
Utgåva
In Austria as well as in most countries pollution of different kind has become more and more severe. This paper is about nitrate polluted groundwater 30 km north of Vienna and how to reduce the content of nitrate in situ. The denitrification method is according to the NITREDOX method. The content of the nitrate is […]
Författare
GERHARD JECHLINGER, WILHELM EIBL, RUDOLF MARTINELL
Nyckelord (Keyword)
aquifer, nitrate, nitrite, groundwater, NITREDOX
Årgång
1998
Nummer
1
Utgåva