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 […]
Publiceringsdatum
Författare
B. Eikebrokk
Nyckelord (Keyword)
Drinking Water; NOM Characteristics; NOM Removal; NOM fractions, BDOC
Nummer
3
Årgång
71
Utgåva
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 […]
Publiceringsdatum
Författare
R.D. Vogt, S. Haaland, G. Riise, B. Eikebrokk
Nyckelord (Keyword)
DNOM; Iron complex, adsorbency, sUVa, SAR
Nummer
3
Årgång
71
Utgåva
With significant problems caused by organics in drinking water, comprehensive knowledge of its concentration, character and reactivity in relation to catchment features and management is important. In a study reported here, six contrasting zero order catchments of the Myponga Reservoir, South Australia were selected to determine the impacts of catchment characteristics and land management practices […]
Publiceringsdatum
Författare
John Awad, John van Leeuwen, Christopher Chow, Mary Drikas,
Ronald J. Smernik, David J. Chittleborough, Erick Bestland
Nyckelord (Keyword)
Chlorine bulk decay; DOM; Land-use; Soil texture; THMFP
Nummer
3
Årgång
71
Utgåva
A qualitative and quantitative monitoring of biofilm formation was performed in four categories of water: raw water, filtered water (after removal of natural organic matter (NOM)), disinfected water and distributed water. The biofilm formation was reduced by 95–99 % as a result of the NOM removal, a reduction considerably more significant than indicated by the […]
Publiceringsdatum
Författare
Lars J. Hem, Bjørnar Eikebrokk, Ida Skaar, Aina C. Wennberg
Nyckelord (Keyword)
NOM, coagulation, regrowth, biofilm
Nummer
3
Årgång
71
Utgåva
Humic substances are formed in very different environment and the relations between properties (and structure) and precursor biota composition still is far from being clarified. The aim of this study was to analyse relations between properties of the peat, peat humic acids and humification degree on example of analysis of three bog profiles in ombrotrophic […]
Publiceringsdatum
Författare
M. Klavins and O. Purmalis
Nyckelord (Keyword)
Humic substances; composition; soil; peat Humic substances; composition; soil; peat
Nummer
3
Årgång
71
Utgåva
A decision support system (DSS) for control of the coagulant dosage at the Görväln drinking water plant has been developed and implemented. The goal with the DSS was to enable the transition from manual to automatic control of coagulant dosage. The DSS is based on a multivariate statistical regression (PLS) model mimicking the operators’ manual […]
Publiceringsdatum
Författare
S. Nilsson and F. Hallgren
Nyckelord (Keyword)
Precipitation; coagulant; dosage; decision support system; multivariate; model
Nummer
3
Årgång
71
Utgåva