Effect on dissolved natural organic matter proxies by increased complexation with iron / Effekter av økte jernkonsentrasjoner på parametere som beskriver egenskapene til løst naturlig organisk materiale
Absorbency of UV and visible light by dissolved natural organic matter (DNOM) is used in proxies (sUVa, SAR) to assess its physiochemical characteristics and thereby removability of the DNOM by waterworks. The ongoing browning of surface waters is partly due to increased concentration and change in characteristics of DNOM. However, it is also likely that […]
NOM diagnostics for the assessments of source water treatability and treatment performance at water supply systems in Norway / NOM-analyser för att bedöma ytvattens behandlingsbarhet och beredningsegenskaper från vattenverk i Norge
This paper presents data on water quality and NOM characteristics from analyses of raw and treated water samples from some 30 water supply systems in Norway. Three different water treatment technologies were applied: (1) Enhanced Coagulation (EC); (2) Ozonation-Biofiltration (OBF); or (3) Nano-filtration (NF). The water samples were analysed using simple NOM characterisation methods and […]
Dricksvatten – vattnets beredning inför desinfektion med UV Koagulationsfiltrering i snabbfilter / Drinking water – preparation for disinfection with UV-light Coagulation filtration in rapid sand filters
In the early 70ies, water in lakes and streams in Sweden was generally clean enough for minimal water treatment to be considered sufficient. The situation was altered by the introduction of novel organisms, e.g., Cryptosporidium and Giardia, into Swedish waters. Since the year 2000, these unicellular parasites are inherent to several surface waters in Sweden. […]
Potentiella högvärdesprodukter från produktionsvåtmarker / Potential high value products from production wetlands
As a part of the BUCEFALOS project, which aims to decrease the eutrophication in the Baltic Sea, production wetlands has been constructed in the creeks Tullstorpsån and Albäcksån in the municipality of Trelleborg in Scania. The plants in the wetlands are to be continuously harvested, thereby ensuring that the phytoremediation efficiency of the wetlands is […]
Water-energy nexus in urban water utilities: a brief Norwegian outlook / Vann-energi nexus i urbane vannverk: et norsk perspektiv
Urban water utilities have realised the importance and the possibility of improving the energy efficiency of their operations; and also have started looking at urban water utilities as essentially energy-producers. The driving factors are economic issues, environmental goals, self-image, public demands etc. Even Norway which enjoys an abundance of clean and green energy and freshwater, […]
Skyfallet i sydvästra Skåne 2014-08-31 Fokuserat mot konsekvenser och relation till regnstatistik i Malmö / The cloudburst in Southwestern Scania 2014-08-31 With focus on consequences and in relation to rainfall statistics in Malmö
During the late summer of 2014 there was a series of intense rainfall events, which caused severe flooding in several municipalities in Sweden. The by far worst event was the cloudburst in Scania, 31/8, not only in terms of rain intensities and volumes, but also the fact that the more intense parts of the rainfall […]
Interdisciplinary Water Research Network Building within Nordic and Baltic Countries / Tvärvetenskaplig nätverksbyggande inom nordisk och baltisk vattenforskning
Viable Water Management and Governance for Futures (VIWAFU), a professional network for international and interdisciplinary collaboration amongst researchers from the Nordic and Baltic countries, was built for providing and sharing knowledge on water management and governance for future policy and decision making during the years 2012–2014. VIWAFU organized four workshops for MSc students, PhD students, […]
Skyfall och avrinning från gröna tak med sedumvegetation / Heavy rainfall and runoff from green roofs vegetated with sedum
Precipitation and runoff are increasing due to changes in climate and urbanization. As a result, more stormwater is produced and needs to be handled locally. Internationally, roofs with vegetation are regarded as a suitable measure for sustainable urban drainage system (SUDS), but have not been much studied in Norway. For five years, two extensive green […]