Urban Flooding – Planning for a blue and green city – en internationell konferens i Malmö 14–15 mars 2012
I våras arrangerade Föreningen vatten och Peter Stahres Stipendium en internationell konferens för att inspirera till kreativa lösningar för blå och gröna dagvattenlösningar som en viktig del i det hållbara stadsbyggandet och för att inspirera till flera stipendieansökningar. I detta nummer av Vatten presenteras korta sammanfattningar av föredragen tillsammans med en sammanfattning av de workshops […]
Anammox i huvudströmmen – vad är problemet? / Anammox in the mainstream – what is the problem?
When Swedish wastewater treatment plants were rebuilt to include enhanced nitrogen removal, anaerobic ammonium oxidation (anammox) was far from being a mature technology. During the 2000s, the process has been introduced into sludge liquor treatment worldwide. The step to introduce anammox in the mainstream is decreasing, but lab- and pilot-scale studies on real municipal wastewater […]
Kontinuerlig föroreningsspridning från vägbroar till ytvattenrecipienter med tillämpning på Segeåns avrinningsområde / Continous pollutant emissions from road bridges to receiving waters with application to the Segeån catchment area
Heavily trafficked roads routinely generate a wide spectrum of pollutants, many of these are listed as priority substances according to the EU Water Framework Directive (WFD). Watercourses that intersect with major roads are exposed to both airborne and waterborne traffic generated pollutants, possibly deteriorating the receiving waters. Four bridges within the Segeån catchment area (in […]
Urban Flooding in Gothenburg – A MIKE21 Study / Urban översvämning i Göteborg – En studie med MIKE21
Climate change has affected the extreme weather throughout the world. Studies have shown an increase of extreme precipitation in Gothenburg, Sweden. A two dimensional (2-D) hydrodynamic simulation model using MIKE 21 was developed as a tool to simulate stormwater related flooding in the central part of Gothenburg. The model was developed using topographical data and […]
Nitrogen reduction at five Swedish municipal wastewater treatment plants configured in a multi-reactor Moving Bed Biofilm Reactor process / Kvävereduktion på fem kommunala avloppsreningsverk i Sverige som tillämpar hela processen med rörliga bärare
Results from wastewater treatment plants with their entire biological treatment step in a multi-reactor configured Moving Bed Biofilm Reactor process designed for nitrogen reduction is available on at least five places in Sweden. An evaluation has been made; of the design and reduction efficiency from these five wastewater treatment plants. The study confirms the idea […]
Numerical Modeling of Wave Transformation and Sediment Transport in Ystad Bay / Vågor, strömmar och sedimenttransport i Ystadbukten
The main objective of the present study was to apply a numerical modelling system to determine the wave transformation and sediment transport patterns in the Ystad Bay, Skåne, Sweden. This work was performed with emphasis on different time scales and various types of wave conditions. For this purpose, a preliminary study of background data for […]
Hur påverkar klimatförändringar sjöar och hav? / The potential effects of global climate change on oceans and lakes
Global increases in atmospheric CO2 and temperature are associated with an increase in the temperature of freshwater lakes and marine ecosystems. The ice breakup in lakes occur earlier which gives an opportunity for phytoplankton to grow early in the season. Another effect is a prolonged period of stratification in the lakes. Warming also may cause […]
Microwave dielectric sensing of moisture in MSWIbottom ash – Comparison of frequency vs. time domain reflectometry / Fukthaltsmätning i bottenaska med dielektriska metoder – en jämförelse mellan mätningar i tids- och frekvensdomän
This paper presents the detection of moisture content in municipal solid waste incineration bottom ash (MSWI BA) with two different measurement techniques. The study used a frequency domain coaxial probe and a short TDR probe to evaluate and compare the performance of the both probes for lossy materials. Instead of using complex data conversion algorithms, […]