Retention of agricultural surface runoff in a cold-climate vegetative buffer zone – effect of vegetation and season / Vegetasjonssoner i jordbrukslandskapet som rensetiltak for overflateavrenning – Effekt av ulik vegetasjon og årstider
This paper presents an investigation of three vegetative buffer zones (BZ) (10 x 5 m) treating agricultural surface runoff. The experimental full scale BZs were located at Mørdre in south-east Norway. The average retention capacity in BZs (entire experimental period) with only grass and with trees and grass was respectively 33 and 46 % for […]
Mapping and situation analysis of drinking water resources in India – a participatory approach / Kartering och situationsanalys av dricksvattentillgång i Indien ur ett lokalt perspektiv
Geographical space is a vital factor over a broad range of decision making problems. Participatory Resource Mapping (PRM) can be a vital tool for collection and assimilation of data on broader spatial scale with ease and accuracy. In this paper we seek to determine the connections between PRM and its linkages with the grassroots knowledge […]
Flödesdesign vid avloppsreningsverk / Flow design at wastewater treatment plants
This article deals with flow design of wastewater treatment plants in Sweden. The traditional sewer system and the traditional approach of flow design of wastewater treatment plants are discussed. Based on the changes that the wastewater systems and the regulations surrounding them have undergone in Sweden over the past 40 years a new method for […]
On selection of threshold values in alarm-systems for drinking water monitoring / Om val av larmvärde vid dricksvattenkontroll i realtid
During a one year long research project at Borensberg Waterworks, Motala, Sweden, water quality with respect to microscopic particle counts both in raw water and drinking water have been monitored by an online water quality monitoring system. Microscopic particle counts were documented with absolute values in real-time. In this paper, a discussion is introduced on […]
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 […]