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, […]
GIS-baserad sårbarhetskartering av VA -system med avseende på klimatförändringar / GIS-based methodology for vulnerability mapping of the water and wastewater system in view of climate change
Urban infrastructure, such as the water and wastewater system, is at particular risk following climate change. Identifying vulnerable parts of the system contributes to safe and sustainable water and wastewater handling in a long term perspective. The aim of this study was to further develop a GIS-based methodology for mapping physical vulnerability of urban water […]
Performance of prefabricated package plants for on-site wastewater treatment in the Vansjø- and Hobøl watershed (Morsa), Norway / Funksjonskontroll av minirenseanlegg i Vansjø- og Hobølvassdraget (Morsa), Norge
Prefabricated package wastewater treatment plants are increasingly used to treat on-site discharges in Norway. The performance of these plants, and their compliance with national and regional legislation, has been thoroughly evaluated. During 2006–2008 two separate studies investigated 91 on-site wastewater treatment plants, in the Vansjø- and Hobøl Watershed. The removal of organic matter was satisfactory […]
Befolkningstillväxt och vattentillgång i obalans / Unbalance between population increase and access to water
The United Nations 2010 revision of the world population estimates the population to increase from about 7 billion today to slightly more than 10 billion in 2100. In the most probable scenario the fertility will reach replacement level during the later decades of the period, after which the total population will not increase significantly. With […]
Groundwater quality in the surroundings of Mafraq landfill, Jordan / Grundvattenkvalité i närheten av Mafraq-deponin, Jordanien
The aim of this study was to gather information about the Mafraq landfills sanitary status as well as assessing its leachate quality and the groundwater quality in its surroundings. The Mafraq landfill is located upon one of Jordan’s most important groundwater aquifer making it a possible threat to the water quality. The aquifer is used […]