Uppströmsarbete: Detektivarbete för ett renare vatten
Arbetet med att hindra föroreningar från att hamna i vattnet, det så kallade uppströmsarbetet, kan leda till stor miljönytta om det görs på ett systematiskt sätt. En arbetsmodell har nu tagits fram för att underlätta och strukturera arbetet.
Impact of dune vegetation on wave and wind erosion. A case study at Ängelholm Beach, South Sweden
At several places in South Sweden, dune vegetation is removed from coastal dunes with the purpose to increase biodiversity in sandy habitats. At these sites, also morphological changes take place as the dunes are no longer stabilized by vegetation. In this case study at Ängelholm Beach in South Sweden, the effect of vegetation removal on […]
Classroom survey to gauge how the three pillars of sustainability are prioritised for the urban water and wastewater system / Klassrumsundersökning för att mäta hur de tre pelarna för hållbarhet prioriteras för urbana vatten- och avloppssystem
This brief article presents the results of a survey conducted by the author during a lecture on ‘Holistic Approach to the Study of Water and Wastewater Systems,’ as a part of the course – Treatment Technologies (Reningsteknik), taught in the Department of Chemical and Engineering Sciences, at Karlstad University (Karlstad, Värmland, Sweden). While all the […]
The introduction of microalgae in wastewater treatment plants – Emission control and policy guidelines / Användning av mikroalger i avlopps- och reningsverk – Utsläppskontroll och riktlinjer
This article considers cost-effective environmental policy instruments supporting the adoption of microalgae cultivation by wastewater treatment plants WWTPs coupled to biogas. One problem in reaching the nutrient reduction targets suggested by the Baltic Sea Action Plan has been differences among countries on their economic ability and on their willingness to pay for abatement. Another is […]
De första stegen mot grundandet av Lunds Universitet – tåget över bälten / The first steps towards the foundation of Lund University – the march over the Danish sounds
The Swedish army marched 1658 over the ice on the Danish sounds from Jutland to Zealand. An event that led to the foundation of Lund University in 1666. From the loads involved the ice thickness can be determined to have been at least 20 cm. Using data from mid-17 hundreds and forward the ice thickness […]
Effects of water scarcity, food production and migration / Effekt av vattenbrist på matproduktion och migration
Recent UN reports show that most countries in northern Africa and the Middle East are facing water shortage. The percentage of renewable water resources withdrawn is extremely high. The population growth in most of these countries is estimated to be very high. Thus, the population is estimated to grow by 50 % in several countries […]
Membran inom svensk dricksvattenproduktion / Membrane filtration in Swedish drinking water production
The interest for membrane technologies has increased in Sweden during the past years. With this in mind, the Svenskt vatten utveckling (SVU) funded project “GenoMembran” was realized, to study improved removal of natural organic matter (NOM). Ultrafiltration with coagulation pretreatment could produce water of similar quality of current conventional treatments, while a tighter membrane, a […]
Förslag till reducering av framtida interna vattenflöden vid Svedala avloppsreningsverk genom ombyggnad av vassbäddar / Proposal on how to reduce future internal flows at Svedala wastewater treatment plant by repurposing reed beds
In 2004 Svedala wastewater treatment plant constructed ten reed beds. The beds had, however, to be taken out of commission after just a few years, due to complications. Eight beds now stand empty, while two are up and running for a limited trial period. The municipality is interested in the possibility of converting the remaining […]
Modeling energy losses in the hydraulic system of Vombverket water treatment plant / Modellering av energiförluster i Vombverkets hydrauliska system
Vombverket, one of the major water treatment plants in south Sweden, originally built in the 1950’s, was significantly expanded in the 1990’s. Because of this expansion, the water flow path was prolonged. The plant was not optimized for the new process design with regard to the hydraulic conditions, but substantial pressure losses were introduced through […]