Kommentar till Artikel om Sveriges genomförande av EG:s ramdirektiv för vatten i Tidskriften vatten nr 3, 2007 »Är kraven i EG:s vattendirektiv rimliga?» (Lidén, Förlin och Persson, 2007)
Författarna drar en slutsats att kraven i EG:s ramdirektiv för vatten, som det genomförts i Sverige, inte är rimliga. Slutsatsen är baserad på en rad felaktiga antaganden. Författarna bortser mer eller mindre från den kommande samverkansprocess som föregår de viktigare besluten inom vattenförvaltningen. De bortser även från de möjligheter till undantag från kravet på god […]
Barriärtänkande vid extrema förhållanden / Multiple barriers under extreme situations
The demand for water increases with population and economic growth. Water that in many cases not is available. Reclaimed water for irrigation has been used for a long time, but in urban areas with water scarcity, advanced treated wastewater has now become an alternative for production of potable water. Extreme situations demand ingenious solutions, solutions […]
ØSTENSJØVANNET – A SHALLOW HYPERTROPHIC LAKE IN NORWAY WITH SIGNIFICANT INTERNAL PHOSPHORUS LOADING DURING SUMMER
Lake Østensjøvannet is a shallow hypertrophic lake situated about 30 km south of Oslo. The water quality in the lake during the last hundred years has deteriorated greatly. The main reason for this is supply of wastewater and drainage from agricultural activities. Investigations in the summers of 1977 and 1978 indicated very high internal phosphorus […]
FRAMTIDA VATTENFÖRSÖRJNING FÖR VÄXJÖ KOMMUN – BEDÖMNING AV OLIKA ALTERNATIV / Future Water Supply of Växjö Municipality – Evaluation of different alternatives
Water supply in Växjö municipality has since 1887 been based on surface water from Helga lake. A water treatment plant was built in 1957 and was extensively reconstructed in 1969 but there are still problems to accomplish with drinking water quality, mainly related to temperature, smell and taste, managanese and aluminum rest. Present water consumption […]
Implementing Resuspension Potential Method to optimise Yarra Valley Water’s mains cleaning program
Routine cleaning of water mains is commonly employed by water utilities around the world as a proactive means of managing common water quality issues. When employed correctly, mains cleaning can be effective in removing loosely deposited sediments that can cause water discolouration. Despite its long history in the water industry, water supply practitioners continue to […]
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Phosphorous removal by the filter materials light-weight aggregates and shellsand – a review of Processes and experimental set-ups for improved design of filter systems for wastewater treatment
Constructed wetlands (CWs) and filterbeds are used throughout the world to treat wastewater. For these systems, selection of a suitable filter material for P sorption is essential, as well as design criteria that enables an efficient treatment. Batch experiments have been the main tool for obtaining maximum P sorption capacities for potential filter materials. They […]
Vattenöversikt i små avrinningsområden i Skåne / Water planning for small Scanian rivers
The EU Water Framework directive requires planning on river basin basis. Different means affect different basins in different ways. In this study it is shown how small basins can be characterized and how a problem analysis can be done with respect to water requirement, water quality, land use and concentrated activities. Effects of separate means […]