Comparison of retort water treatment methods – a case study in Jordan / Jämförelse av förbehandlingsmetoder av spillvatten från pyrolys av oljeskiffer – En fallstudie från Jordanien
In this work, physical and chemical characterization of El- Lajjoun retort water from oil shale pyrolysis process has been carried out. Comparison of different treatment methods (Air stripping, activated carbon, and oil shale ash) for the major components which could affect the design and operation of any set of wastewater treatment process were conducted. The […]
Miljøtiltak i vassdrag med erfaringer fra Nord-Norge / Remedial measures in watercourses with experiences from northern Norway
Hydropower development has reduced the discharge in many Norwegian rivers and watercourses. This in turn, has affected fish communities and the biological diversity of these rivers in a negative way. Sills have been used extensively as remedial measures in regulated rivers for a long time. More varied measures are used today such as adjusting the […]
Modelling coastal erosion in bjärred, lomma municipality / Long-term evolution and protective measures
The aim of the present work was to investigate the erosion phenomena taking place at the coast in Bjärred and the possibility of introducing additional protective measures. An aerial photograph analysis showed that the beach has eroded an average of 4.3 m during the time period 1963–2002. Among the measures applied by the municipality in […]
RESISTIVITY IMAGING AND IMAGE ANALYSIS FOR ESTIMATING WATER AND SOLUTE TRANSPORT ACROSS THE CAPILLARY FRINGE IN LABORATORY EXPERIMENTS / Resistivitet mätningar och bildanalys för att uppskatta vatten och partikeltransport genom den kapillära zonen i laboratorieexperiment
This study contains a series of laboratory experiments designed to describe the lateral movement and spatial variability of an infiltrated dye tracer across the capillary fringe of homogenous sand in an aquarium. A combination of image analysis and geoelectrical monitoring was used to track the flow paths of the dye with different hydraulic gradients and […]
DYNAMIC CHARACTERISTICS OF TEMPERATURE, PRECIPITATION AND RUNOFF TO THE BALTIC SEA DURING THE PAST MILLENNIUM
The present study used results from a ‘paleosimulation’ covering the Baltic Sea basin and the surrounding areas to investigate chaotic properties of temperature, precipitation, and runoff. Three periods between years 1000 and 1929 (1000–1199, 1551–1749, and 1751–1929), representing a warm, a cool, and an intermediate climate episode, respectively, were studied. Time series of annual temperature, […]
SITUATION ANALYSIS OF WATER SUPPLY SYSTEM OF AMRITSAR CITY, INDIA / Analys av vattendistributionsystemet i Amritsar, Indien
The city of Amritsar today is facing the scarcity of water resources due to change in urbanization and other external externalities. Drinking water supply of city is entirely dependant on ground water resources, and the latter has been increasingly exploited at a rate that exceeds its natural replenishment. Besides this, major portion of water is […]
KRISBEREDSKAP I ETT FÖRÄNDRAT KLIMAT – ÄNDRAT PERSPEKTIV FÖR ATT MÖTA DET OKÄNDA / Crisis preparedness in a changing climate – new approach in order to meet the unknown
Contemporary Swedish crisis management system have developed since the 1960s and during this time focus have changed from handling military threats and security of supply, to unpredictable and transboundary crisis. Local governments, responsible for much of the services to the citizens, have to handle the far reaching effect of climate change. At the same time […]
THE EFFECT OF LAND USE ON SOIL INFILTRATION RATE IN A HEAVY CLAY SOIL IN EGYPT / Effekten av landanvändning på infiltrationshastighet i egyptiska lerjordar
Double ring infiltrometers are usually used by engineers, agronomists, and other professionals to estimate the infiltration rate of different soil types. Measurement of surface infiltration rate is necessary for many purposes (describing the soil permeability). In this study, the effect of land use in heavy clayey soil on soil infiltration rate was investigated using double […]
TESTING THE POWER LAW ON URBAN WATER AND WASTEWATER PIPELINE NETWORKS / Å teste hypotesen om at ”Power Law” kan knyttes til ledningsnettverk for vann- og avløpssystemer i byer
Active research has been going on to observe and validate the Power Law in physics, computer science, economics, linguistics, sociology, geophysics etc. This paper sets out to test the hypothesis that the Power Law is a feature of water and wastewater pipeline networks in cities. Databases from 30 different municipalities in Norway serve as the […]