lnu.sePublications
Change search
Refine search result
1 - 12 of 12
CiteExportLink to result list
Permanent link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Rows per page
  • 5
  • 10
  • 20
  • 50
  • 100
  • 250
Sort
  • Standard (Relevance)
  • Author A-Ö
  • Author Ö-A
  • Title A-Ö
  • Title Ö-A
  • Publication type A-Ö
  • Publication type Ö-A
  • Issued (Oldest first)
  • Issued (Newest first)
  • Created (Oldest first)
  • Created (Newest first)
  • Last updated (Oldest first)
  • Last updated (Newest first)
  • Disputation date (earliest first)
  • Disputation date (latest first)
  • Standard (Relevance)
  • Author A-Ö
  • Author Ö-A
  • Title A-Ö
  • Title Ö-A
  • Publication type A-Ö
  • Publication type Ö-A
  • Issued (Oldest first)
  • Issued (Newest first)
  • Created (Oldest first)
  • Created (Newest first)
  • Last updated (Oldest first)
  • Last updated (Newest first)
  • Disputation date (earliest first)
  • Disputation date (latest first)
Select
The maximal number of hits you can export is 250. When you want to export more records please use the 'Create feeds' function.
  • 1.
    Amneklev, Jennie
    et al.
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Bergbäck, Bo
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Sörme, Louise
    Statistiska Centralbyrån.
    Lagerkvist, Ragnar
    Stockholm Vatten.
    Upstream silver source mapping - a case study in Stockholm, Sweden2014In: Water Science and Technology, ISSN 0273-1223, E-ISSN 1996-9732, Vol. 69, no 2, p. 392-397Article in journal (Refereed)
    Abstract [en]

    Silver (Ag) can be a problem for wastewater treatment plants (WWTP) and their capability to use sewage sludge as a soil fertilizer. Due to a high accumulation rate in soils, the levels of Ag in the incoming water at the WWTP must be reduced. This study aims to identify major diffuse emission sources in the technosphere through a comprehensive substance flow analysis of Ag in Stockholm, Sweden. Large inflows and stocks of Ag were present in electrical and electronic goods and appliances as well as in jewellery and silverware. The total inflow was 3.2 tonnes (4.2 g/person), the total stock was 100 tonnes (140 g/person) and the total outflow was 330 kg (430 mg/person). Major identified Ag sources with emissions ending up in the WWTP (total 26 kg, 34 mg/person) were food, amalgam and beauty products (via urine and faeces, 12 mg/person or 11% of incoming amount), and textiles (via washing, 17 mg/person or 16% of incoming amount). This study explains approximately 35% of the total 80 kg Ag in the incoming water at Henriksdal WWTP in Stockholm. Plastic, photography and beauty products were identified as possible sources of Ag that need to be examined further.

  • 2.
    Andersen, Henrik Rasmus
    et al.
    Technical University of Denmark, Denmark.
    Lundsbye, Mette
    Technical University of Denmark, Denmark.
    Wedel, Heidi. V.
    Technical University of Denmark, Denmark.
    Eriksson, Eva
    Technical University of Denmark, Denmark.
    Ledin, Anna
    Technical University of Denmark, Denmark.
    Estrogenic personal care products in a greywater reuse system2007In: Water Science and Technology, ISSN 0273-1223, E-ISSN 1996-9732, Vol. 56, no 12, p. 45-49Article in journal (Refereed)
    Abstract [en]

    The occurrence and fate of parabens in a greywater system was assessed. The potential for removal of residual paraben concentrations in effluent greywater with chlorine dioxide was also investigated. The influent to the greywater plant was characterised by considerable variation, with concentrations from below the detection limit to 40 μg/L and the five commonly used parabens in consumer products were frequently detected. After the biological treatment only two paraben were detected with concentration from 65–120 ng/L. Chlorine dioxide treatment of the biologically treated effluent with dosages down to 0.75 mg/L resulted in more than 97% reduction of all parabens. Formation of the by-product chloroform was insignificant from the chlorine dioxide treatment.

  • 3.
    Christensson, Magnus
    et al.
    AnoxKaldnes AB, Lund, Sweden.
    Ekström, Sara
    AnoxKaldnes AB, Lund, Sweden.
    Andersson Chan, Anneli
    Tekniska Forvaltningen, Vaxjo, Sweden.
    Le Vaillant, Eric
    AnoxKaldnes AB, Lund, Sweden.
    Lemaire, Romain
    Veolia Water Tech Dept, France.
    Experience from start-ups of the first ANITA Mox Plants 2013In: Water Science and Technology, ISSN 0273-1223, E-ISSN 1996-9732, Vol. 67, no 12, p. 2677-2684Article in journal (Refereed)
    Abstract [en]

    ANITA (TM) Mox is a new one-stage deammonification Moving-Bed Biofilm Reactor (MBBR) developed for partial nitrification to nitrite and autotrophic N-removal from N-rich effluents. This deammonification process offers many advantages such as dramatically reduced oxygen requirements, no chemical oxygen demand requirement, lower sludge production, no pre-treatment or requirement of chemicals and thereby being an energy and cost efficient nitrogen removal process. An innovative seeding strategy, the 'BioFarm concept', has been developed in order to decrease the start-up time of new ANITA Moxinstallations. New ANITA Mox installations are started with typically 3-15% of the added carriers being from the 'BioFarm', with already established anammox biofilm, the rest being new carriers. The first ANITA Mox plant, started up in 2010 at Sjolunda wastewater treatment plant (WWTP) in Malmo, Sweden, proved this seeding concept, reaching an ammonium removal rate of 1.2 kgN/m(3) d and approximately 90% ammonia removal within 4 months from start-up. Thisfirst ANITA Mox plant is also the BioFarm used for forthcoming installations. Typical features of this first installation were low energy consumption, 1.5 kW/NH4-N-removed, low N2O emissions, <1% of the reduced nitrogen and a very stable and robust process towards variations in loads and process conditions. The second ANITA Mox plant, started up at Sundets WWTP in Vaxjo, Sweden, reached full capacity with more than 90% ammonia removal within 2 months from start-up. By applying a nitrogen loading strategy to the reactor that matches the capacity of the seeding carriers, more than 80% nitrogen removal could be obtained throughout the start-up period.

  • 4.
    Davidsson, Åsa
    et al.
    Lund University.
    Kjerstadius, Hamse
    Lund University.
    Haghighatafshar, Salar
    Lund University.
    Fick, Jerker
    Umeå University.
    Olsson, Mikael Emil
    Technical University of Denmark, Denmark.
    Wachtmeister, Hilla
    Technical University of Denmark, Denmark.
    Eriksson, Eva
    Linnaeus University, School of Business and Economics. Technical University of Denmark, Denmark.
    Ia Cour Jansen, J.
    Lund University.
    Effect of anaerobic digestion at 35, 55 and 60 °C on pharmaceuticals and organic contaminants2014In: Water Science and Technology, ISSN 0273-1223, E-ISSN 1996-9732, Vol. 69, no 6, p. 1282-1288Article in journal (Refereed)
    Abstract [en]

    The application of treated sewage sludge on farmland is a suggested method for recycling nutrients and reducing demand for commercial fertilizer. However, sludge needs to be safe from possible contaminants which can cause acute and long-term health and environmental problems. Residual pharmaceuticals and organic contaminants are mentioned as emerging threats since wastewater treatment plants are not designed to degrade these substances. The aim of this study was to screen and evaluate the presence, and reduction, of pharmaceuticals and polycyclic aromatic hydrocarbons (PAHs) during anaerobic digestion of mixed primary and waste-activated sludge at 35, 55 and 60°C and during pasteurization at 70°C. The study showed the difficulty of analysing pharmaceutical compounds in low concentrations in the sludge matrix. No general reduction of these compounds was seen during treatment, but for individual substances some reduction occured. The PAHs were generally not reduced during digestion or pasteurization, but for three substances (indeno[1,2,3-cd]pyrene and dibenzo[a,h]anthracene (analysed together) and benzo[g,h,i]perylene) reduction (up to 60%) during digestion was seen. Digestion at 35 and 55°C resulted in about the same order of reduction of the three individual PAHs, which was higher than for digestion at 60°C.

  • 5.
    de Sa Salomao, Andre Luis
    et al.
    Rio de Janeiro State University, Brazil.
    Marques, Marcia
    Linnaeus University, Faculty of Science and Engineering, School of Natural Sciences.
    Severo, Raul Goncalves
    da Cruz Roque, Odir Clecio
    Engineered ecosystem for on-site wastewater treatment in tropical areas2012In: Water Science and Technology, ISSN 0273-1223, E-ISSN 1996-9732, Vol. 66, no 10, p. 2131-2137Article in journal (Refereed)
    Abstract [en]

    There is a worldwide demand for decentralized wastewater treatment options. An on-site engineered ecosystem (EE) treatment plant was designed with a multistage approach for small wastewater generators in tropical areas. The array of treatment units included a septic tank, a submersed aerated filter, and a secondary decanter followed by three vegetated tanks containing aquatic macrophytes intercalated with one tank of algae. During 11 months of operation with a flow rate of 52 L h(-1), the system removed on average 93.2% and 92.9% of the chemical oxygen demand (COD) and volatile suspended solids (VSS) reaching final concentrations of 36.3 +/- 12.7 and 13.7 +/- 4.2 mg L-1, respectively. Regarding ammonia-N (NH4-N) and total phosphorus (TP), the system removed on average 69.8% and 54.5% with final concentrations of 18.8 +/- 9.3 and 14.0 +/- 2.5 mg L-1, respectively. The tanks with algae and macrophytes together contributed to the overall nutrient removal with 33.6% for NH4-N and 26.4% for TP. The final concentrations for all parameters except TP met the discharge threshold limits established by Brazilian and EU legislation. The EE was considered appropriate for the purpose for which it was created.

  • 6.
    Eriksson, Eva
    et al.
    Technical University of Denmark, Denmark.
    Baun, Anders
    Technical University of Denmark, Denmark.
    Mikkelsen, Peter Steen
    Technical University of Denmark, Denmark.
    Ledin, Anna
    Technical University of Denmark, Denmark.
    Chemical hazard identification and assessment tool for evaluation of stormwater priority pollutants2005In: Water Science and Technology, ISSN 0273-1223, E-ISSN 1996-9732, Vol. 51, no 2, p. 47-55Article in journal (Refereed)
    Abstract [en]

    Assessment of chemical hazards is a critical issue, which have to be dealt with when evaluating different strategies for sustainable handling of stormwater. In the present study, a methodology for identifying the most critical and representative chemical pollutants was developed. A list of selected stormwater priority pollutants (SSPP-list) is the out-put from the procedure. Two different strategies for handling of stormwater were considered; discharge into a surface water recipient and infiltration. However, the same methodology can be used for other types of wastewater and other strategies for handling and treatment. A literature survey revealed that at least 656 xenobiotic organic compounds (XOCs) could be present in stormwater. In the next step, 233 XOCs were evaluated with respect to the potential for being hazardous towards either aquatic living organisms or humans, or causing technical or aesthetical problems. 121 XOCs were found have at least one of these negative effects, while 26 XOCs could not be assessed due to the lack of data. The hazard assessment showed that 40 XOCs had a PEC/PNEC ratio above one., e.g. they should be considered as priority pollutants. The final step is the expert judgement, which resulted in a final SSPP-list containing 16 selected priority pollutants.

  • 7.
    Eriksson, Eva
    et al.
    Technical University of Denmark, Denmark.
    Donner, Erica
    Middlesex University, UK ; University of South Australia, Australia.
    Ledin, Anna
    Technical University of Denmark, Denmark.
    Presence of selected priority and personal care substances in an onsite bathroom greywater treatment facility2010In: Water Science and Technology, ISSN 0273-1223, E-ISSN 1996-9732, Vol. 62, no 12, p. 2889-2898Article in journal (Refereed)
    Abstract [en]

    In recent years, concerns about climate change and the inefficient use and ongoing pollution of water resources have increased the political motivation to encourage water recycling. This has led to the widespread introduction of water saving measures and to advances in the decentralised treatment and reuse of wastewater. In particular, the treatment and reuse of greywater has received attention, although important information such as greywater substance loadings is still only rarely available. With the implementation of the European Water Framework Directive the focus on controlling and phasing-out Priority/Priority Hazardous Substances (PS/PHS) is growing, and it is vital to know their sources and flows in order to generate sustainable emission control strategies. The main objective of this study was to quantify the concentrations and loads of PS/PHS and personal care substances in bathroom greywater, and to thereby assess the contribution of household activities to municipal wastewater loads for these substances. Nickel and mercury may be sourced substantially from household activities as it shown in the paper that bathroom greywater contributed a significant proportion of the overall load of these substances at the municipal wastewater treatment plant. Organic matter in the influent greywater was found to be principally associated with large particles (>8 µm), however it was the dissolved and small sized particles that were predominantly removed in the treatment.

  • 8.
    Eriksson, Eva
    et al.
    Technical University of Denmark, Denmark.
    Revitt, D. Mike
    Middlesex University, UK.
    Ledin, Anna
    Lund University.
    Lundy, Lian
    Middlesex University, UK.
    Lützhøft, Hans-Christian Holten
    Technical University of Denmark, Denmark.
    Wickman, Tonie
    City of Stockholm.
    Mikkelsen, Peter Steen
    Technical University of Denmark, Denmark.
    Water management in cities of the future using emission control strategies for priority hazardous substances2011In: Water Science and Technology, ISSN 0273-1223, E-ISSN 1996-9732, Vol. 64, no 10, p. 2109-2118Article in journal (Refereed)
    Abstract [en]

    Cities of the future face challenges with respect to the quantity and quality of water resources, and multiple managerial options need to be considered in order to safeguard urban surface water quality. In a recently completed project on “Source Control Options for Reducing Emissions of Priority Pollutants” (ScorePP), seven emission control strategies (ECS) have been developed and tested on a semi-hypothetical case city (SHCCA) for selected European priority pollutants (PPs). The SHCCA approach was chosen to facilitate transparency, to mitigate data gaps and to decrease the level of uncertainty in the results. The selected PPs differ in their uses and environmental fate and therefore accumulate in different urban environmental compartment. To achieve the required reduction in PP levels in urban waters the full implementation of existing EU regulation is essential and appropriate combinations of managerial and technological options (source control and treatment) can be highly relevant.

  • 9. Nordberg, A
    et al.
    Hansson, M
    Sundh, I
    Nordkvist, E
    Carlsson Juhlin, Helena
    Institutionen för mikrobiologi, SLU.
    Mathisen, B
    Monitoring of a biogas process using electronic gas sensors and near-infrared spectroscopy (NIR)2000In: Water Science and Technology, ISSN 0273-1223, E-ISSN 1996-9732, Vol. 41, no 3, p. 1-8Article in journal (Refereed)
    Abstract [en]

    The use of electronic gas sensors and near-infrared spectroscopy (NIR) to monitor the dynamics in a biogas process was evaluated using multivariate data analysis. The digester, a completely stirred 81 tank reactor fed with a mixture of cellulose, albumin and minerals, was exposed to an overload of glucose after which monitoring of electronic gas sensor responses, NIR spectra as well as traditional chemical variables and analysis of microbial community structure were done. The responses from an array of electronic gas sensors consisting of MOS and MOSFET-sensors were correlated against volatile compounds in the headspace using partial least square (PLS) regressions. The root mean square error of prediction (RMSEP) was 0.15 g/l for acetate in the range of 0.14-1.72 g/l and the RMSEP for methane was 2.3% in the range of 27-73%. Selected wavelengths from the second derivative of the original NIR spectra (400-2500 nm) resulted in a PLS-model for predicting microbial biomass, measured as total phospholipid fatty acids, with a RMSEP of 9 nmol/ml in the range of 163-293 nmol/ml. The NIR model developed for acetate had a RMSEP of 0.20 g/l within the range of 0.14-1.72 g/l. The results clearly show that both NIR and an array of electronic gas sensors can provide simultaneous non-invasive in situ monitoring of important process variables in anaerobic digesters.

  • 10.
    Svensson, Henric
    et al.
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Jani, Yahya
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Hogland, William
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Marques, Marcia
    Univ Estado Rio De Janeiro, Rio De Janeiro, Brazil.
    Particle size characterization of oak wood leachate: chemical oxygen demand and toxicity distribution within different fractions2014In: Water Science and Technology, ISSN 0273-1223, E-ISSN 1996-9732, Vol. 70, no 3, p. 502-509Article in journal (Refereed)
    Abstract [en]

    Oak wood leachate obtained from two storage facilities (storage pound and ditch) in a wood-based industry, and leachate generated by a laboratory leaching test, were characterized in seven categories regarding particle size distribution (PSD) (raw leachate, <= 20 mu m, <= 10 mu m, <= 1.2 mu m, <= 13 nm, <= 5 nm and <= 2 nm). The PSD followed a normal distribution model with a correlation coefficient (r) varying from 82 to 88. Each fraction was analysed regarding chemical oxygen demand, polyphenols and acute toxicity in toxicity assays with Artemia salina, Vibrio fischeri and Lactuca sativa. Fractions with particles > 1.2 mu m were more toxic to A. salina and V. fisheri than fractions with particles <= 1.2 mu m. No toxic effect was observed for L. sativa. The results suggest that polyphenols are the main toxic compounds in oak wood leachate. A conspicuous difference was found between field and laboratory samples.

  • 11. Thorén, AK
    et al.
    Legrand, Catherine
    University of Kalmar, School of Pure and Applied Natural Sciences.
    Herrmann, Jan
    University of Kalmar, School of Pure and Applied Natural Sciences.
    Transport and transformation of de-icing urea from airport runways in a constructed wetland system2003In: Water Science and Technology, ISSN 0273-1223, E-ISSN 1996-9732, Water Science and Technology, Vol. 48, no 5, p. 283-290Article in journal (Refereed)
    Abstract [en]

    Urea, NH2-CO-NH2, is used as a de-icing agent at Kalmar Airport, southeast Sweden. During 1998-2001, urea contributed on average 30% of the yearly nitrogen (N) transport of 41,000 kg via Tornebybacken stream to the coastal zone of the Baltic Sea. In order to reduce stream transport of N from airport, agricultural and other diffuse sources, a wetland was constructed in 1996. Annual wetland retention of total-N varied in the range of 2,500-8,1100 kg (6-36% of influent) during 1998-2001, according to mass balances calculated from monthly sampling. During airport de-icing, January-March 2001, 660 kg urea-N out of 2,600 kg applied urea-N reached the wetland according to daily sampling. This indicated that 75% of the urea was transformed before entering the wetland. Urea was found to be only a minor part (8%) of total-N in the wetland influent. Calculations of cumulative urea-N loads at the wetland inlet and outlet respectively, showed a significant urea. transformation during February 2001 with approximately 40% of the incoming urea-N being transformed in the wetland system. These results show that significant amounts of urea can be transformed in a wetland system at air temperatures around 0degreesC. 

  • 12.
    Vezzaro, Luca
    et al.
    Technical University of Denmark, Denmark.
    Eriksson, Eva
    Technical University of Denmark, Denmark.
    Ledin, Anna
    Technical University of Denmark, Denmark.
    Mikkelsen, Peter Steen
    Technical University of Denmark, Denmark.
    Dynamic stormwater treatment unit model for micropollutants (STUMP) based on substance inherent properties2010In: Water Science and Technology, ISSN 0273-1223, E-ISSN 1996-9732, Vol. 62, no 3, p. 622-629Article in journal (Refereed)
    Abstract [en]

    Modelling the removal of micropollutants (MPs) in stormwater treatment systems is essential in a context that is characterized by a general lack of measurements. This paper presents an innovative dynamic model for the prediction of the removal of MPs in stormwater treatment systems (Stormwater Treatment Unit model for Micro Pollutants—STUMP). The model, based on a conceptual model of two-compartment (water and sediment) serial Continuous Stirred-Tank Reactors (CSTRs), can predict the fate of MPs based on their inherent properties, which are often the only information available regarding this kind of substances. The flexible structure of the model can be applied to a wide range of treatment units and substances. Based on the most relevant removal processes (settling, volatilization, sorption, biodegradation, and abiotic degradation), the model allows the dynamic simulation of the MP behaviour in the different compartments of stormwater treatment systems. The model was tested for heavy metals (copper and zinc) and organic substances (benzene and di(2-ethylhexyl)phthalate). The results show that volatilization plays a big role for removal of benzene while the removal of substances with high sorption capacity is mainly driven by settling. The model was proven to be able to predict the importance of the various fate processes for selected substances with different inherent properties. A thorough assessment of the influence of the various fate process parameters will allow a reliable assessment of the treatment performances for a wide range of MPs.

1 - 12 of 12
CiteExportLink to result list
Permanent link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf