During the last two decades, wastewater treatment in systems combining conventional biological processes and hydroponics has been tried at several locations. In this article, six different systems are described and their treatment results compared. Five systems were found in literature, and the sixth system was constructed and operated by the microbiology group at KTH. These […]
Problems associated with the amount of dissolved organic carbon (DOC) in drinking water treatment are very common. They range from the very obvious ones like treated water taste and odour and appearance, to the less understood disinfection by-product formation, bacterial regrowth in distribution network, exhaustion of activatedcarbon, membrane fouling and increased coagulation chemical demand. Ion […]
Författare JARMO SALLANKO, VIRVE MERISALO, MARIN SLUNJSKI
Nyckelord (Keyword) water treatment, ion exchange, MIEX, DOC, TOC.
A competitive system for stormwater treatment should provide efficient particle removal, small footprint, rapid start-up, robustness, cost effectiveness and flexibility. Chemical pre-treatment followed by microscreening could fulfil these requirements. Thus the potential in such a system was investigated within the framework of a project involving Kemira Kemi AB, Hydrotech AB and the Department of Water […]
Författare MICHAEL LJUNGGREN, BRITT NILSSON, RUNE STRUBE,
LENNART JÖNSSON and JES LA COUR JANSEN
The influence of extensive sedum-moss green roofs on runoff water pollution loads was studied for four full scale installations located in southern Sweden. The aim of the study was to ascertain whether the green roof behaves as a sink or a source of pollutants on annual basis and if runoff quality depends on a roof’s […]
Författare JUSTYNA CZEMIEL BERNDTSSON och LARS BENGTSSON
Nyckelord (Keyword) Extensive green roofs; heavy metals; nutrients; runoff pollution load; urban.
Investigations and studies of documentation show that the situation for the fish and the water quality in the Göteborg canals are better than 100 years ago thanks to the early construction and successive improvements of the sewer system. The river Göta älv has nowadays the greatest influence of the water quality in the canals due […]
Författare SVEN MATHIASSON, BERNT PERSSON, MIKAEL ADRIAN, EVA EKSTEDT,
Nyckelord (Keyword) canal water quality, sediment investigations, improvements in sewer system, fish species, substances
The Emå River is one of the largest catchments in South Sweden. Efforts are made to develop sustainable tourism in the area. Recreational fishing is an important activity, that will have a potential to grow. The Emå River has a special and famous attraction, namely two species of salmon (salmo trutta and salmo salar) of […]
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