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Borris, Matthias
Publications (10 of 11) Show all publications
Viklander, M., Österlund, H., Müller, A., Marsalek, J. & Borris, M. (2019). Kunskapssammanställning: Dagvattenkvalitet. Svensktvatten AB
Open this publication in new window or tab >>Kunskapssammanställning: Dagvattenkvalitet
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2019 (Swedish)Report (Other (popular science, discussion, etc.))
Alternative title[en]
State of knowledge : Stormwater quality
Abstract [sv]

Rapporten sammanställer internationella forskningsresultat om källor till dagvattenföroreningar samt föroreningarnas koncentration, mängd och variation mellan platser och årstider. Den beskriver vad man bör tänka på vid utformning av provtagningsprogram och vid val av modellverktyg, och den diskuterar effekter på hälsa, miljö och samhälle samt vilka regelverk och riktlinjer som finns.

Abstract [en]

This report summarizes stormwater pollutants, their sources, concentrations, and variations in concentrations. Practical guidance for field data collection, adoption of standard data from the literature and computer modelling are given. Furthermore, the effects on health, the environment and society, and associated regulations are discussed.

Place, publisher, year, edition, pages
Svensktvatten AB, 2019. p. 82
Keywords
Micropollutants, sampling, stormwater quality models, urban drainage, Dagvatten, dagvattenkvalitetsmodeller, föroreningar, provtagning
National Category
Other Civil Engineering
Research subject
Urban Water Engineering
Identifiers
urn:nbn:se:ltu:diva-72952 (URN)
Projects
Kunskapssammanställning: från regn till recipient – dagvattnets innehåll och dess variationer
Available from: 2019-02-19 Created: 2019-02-19 Last updated: 2019-06-10Bibliographically approved
Borris, M., Österlund, H., Marsalek, J. & Viklander, M. (2017). An exploratory study of the effects of stormwater pipeline materials on transported stormwater quality. Water Science and Technology, 76(2), 247-255
Open this publication in new window or tab >>An exploratory study of the effects of stormwater pipeline materials on transported stormwater quality
2017 (English)In: Water Science and Technology, ISSN 0273-1223, E-ISSN 1996-9732, Vol. 76, no 2, p. 247-255Article in journal (Refereed) Published
Abstract [en]

Implications of three sewer pipe materials (concrete, galvanized corrugated steel, and polyvinyl chloride (PVC)) for stormwater quality were explored in laboratory experiments, in which three types of stormwater, SW1-SW3, were circulated in 0.5 m long sewer pipe sections. SW1 and SW2 represented synthetic rainwater, without and with fine street sediment added (CTSS = 150 mg/L), respectively, and SW3 was actual stormwater with the same sediment addition as SW2. Following 20-min runs, with an equivalent distance of 500 m travelled by water particles, a number of statistically significant changes in the stormwater chemistry were observed: (i) pH of all the simulated stormwaters increased in the concrete pipe (from 7.0-7.3 to 8.1-9.3), (ii) turbidity decreased in two stormwaters with sediments (SW2 and SW3) in concrete and galvanized corrugated steel pipes (by 50 and 85%, respectively), (iii) the type of stormwater affected the observed copper (Cu) concentrations, with Cudiss concentrations as high as 25.3 μg/L noted in SW3 passing through the PVC pipe, and (iv) zinc (Zn) concentrations sharply increased (Zntot = 759-1,406 μg/L, Zndiss = 670-1,400 μg/L) due to Zn elution from the galvanized steel pipe by all three stormwaters. Such levels exceeded the applicable environmental guidelines.

Place, publisher, year, edition, pages
IWA Publishing, 2017
National Category
Water Engineering
Research subject
Urban Water Engineering
Identifiers
urn:nbn:se:ltu:diva-65082 (URN)10.2166/wst.2017.195 (DOI)000406789800001 ()28726691 (PubMedID)2-s2.0-85026301958 (Scopus ID)
Note

Validerad; 2017; Nivå 2; 2017-08-15 (andbra)

Available from: 2017-08-15 Created: 2017-08-15 Last updated: 2018-07-10Bibliographically approved
Borris, M., Österlund, H., Marsalek, J. & Viklander, M. (2016). Contribution of coarse particles from road surfaces to dissolved and particle-bound heavy metal loads in runoff: A laboratory leaching study with synthetic stormwater (ed.). Science of the Total Environment, 573, 212-221
Open this publication in new window or tab >>Contribution of coarse particles from road surfaces to dissolved and particle-bound heavy metal loads in runoff: A laboratory leaching study with synthetic stormwater
2016 (English)In: Science of the Total Environment, ISSN 0048-9697, E-ISSN 1879-1026, Vol. 573, p. 212-221Article in journal (Refereed) Published
Abstract [en]

Laboratory leaching experiments were performed to study the potential of coarse street sediments (i.e. > 250 μm) to release dissolved and particulate-bound heavy metals (i.e. Cd, Cr, Cu, Ni, Pb and Zn) during rainfall/runoff. Towards this end, street sediments were sampled by vacuuming at seven sites in five Swedish cities and the collected sediments were characterized with respect to their physical and chemical properties. In the laboratory, the sediments were combined with synthetic rainwater and subject to agitation by a shaker mimicking particle motion during transport by runoff from street surfaces. As a result of such action, coarse street sediments were found to release significant amounts of heavy metals, which were predominantly (up to 99%) in the particulate bound phase. Thus, in dry weather, coarse street sediments functioned as collectors of fine particles with attached heavy metals, but in wet weather, metal burdens were released by rainfall/runoff processes. The magnitude of such releases depended on the site characteristics (i.e. street cleaning and traffic intensity), particle properties (i.e. organic matter content), and runoff characteristics (pH, and the duration of, and energy input into, sediment/water agitation). The study findings suggest that street cleaning, which preferentially removes coarser sediments, may produce additional environmental benefits by also removing fine contaminated particles attached to coarser materials

National Category
Water Engineering
Research subject
Urban Water Engineering
Identifiers
urn:nbn:se:ltu:diva-14418 (URN)10.1016/j.scitotenv.2016.08.062 (DOI)000390071000020 ()27565530 (PubMedID)2-s2.0-84989928485 (Scopus ID)dc49cfef-44be-412b-8bd6-8e871c0de090 (Local ID)dc49cfef-44be-412b-8bd6-8e871c0de090 (Archive number)dc49cfef-44be-412b-8bd6-8e871c0de090 (OAI)
Note

Validerad; 2016; Nivå 2; 20160825 (andbra)

Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved
Borris, M. (2016). Future trends in urban stormwater quality: effects of changes in climate, catchment characteristics and processes and socio-economic factors (ed.). (Doctoral dissertation). Paper presented at . : Luleå tekniska universitet
Open this publication in new window or tab >>Future trends in urban stormwater quality: effects of changes in climate, catchment characteristics and processes and socio-economic factors
2016 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

Climate change and progressing urbanization cause numerous environmental concerns, including the impacts on urban drainage. Such impacts were addressed during the last two decades with focus on hydraulic overloading of drainage systems and the means of overload remediation by stormwater management. However, modern urban drainage also serves to provide and protect broad environmental services chiefly by controlling stormwater quality. During the past 40 years, a sizeable investment has been made in urban drainage systems to improve stormwater quality and protect receiving water ecosystems. Such investments are at risks, because of impaired performance of stormwater quality controls now and in the future for the following reasons: (i) Hydraulic and Pollution overloading (ii) the aging of stormwater management systems and (iii) insufficient attention paid to socio-economic issues. The primary objectives of the thesis that follows is to address the above issues by examining future trends in stormwater quality and the influential factors affecting these trends. Trends in urban stormwater quality, in response to projected changes in the climate, urban catchments and their drainage systems, and environmental practices and policies, were studied by systematically describing these changes by a set of scenarios, which were then applied to several test catchments in simulations with two well-established computer models of urban drainage (US EPA SWMM and WinSLAMM). In runoff simulations, stormwater quality was described Total suspended solids (TSS) and three heavy metals, namely Cu, Pb and Zn. The assessment of uncertainties in the simulation process and potential changes in sewer pipe materials further inspired two additional studies: Potential improvements in modelling trace metal transport and control by clarifying the role of coarse sediments on road surfaces, and water quality implications of using sewer pipes made from three different materials. Simulations with up-scaled rainfall data produced changes in stormwater quality, depending on the type of storm events. Generally pollutant loads increased due to climate changes characterized by higher depths and intensities of rainfall in future scenarios. Storms with low to intermediate depths and intensities showed the highest sensitivities to climatic changes, because runoff producing areas increased with higher storm intensities (i.e., leading to contributions of pervious areas), and sufficient pollutant supplies on catchment surfaces; for high intensity events, such supplies were quickly exhausted. TSS loads exported from catchments with low imperviousness were most sensitive to climatic changes, but the magnitudes of TSS loads were low compared to those from catchments with high imperviousness. Furthermore, potential changes in catchment characteristics and drainage systems were identified to be of importance. Future scenarios combining changes in climate and socio-economic factors showed that the impacts on stormwater quality caused by climatic changes were smaller than those caused by changes in socio-economic factors. However, future urbanization impacts on stormwater quality could be controlled by incorporating modern stormwater management measures in future catchments. Simulations of such controls indicated that they were highly effective in protecting the stormwater quality. Finally it was noted that the two applied computer models produced somewhat different results and high uncertainties when assessing the future stormwater quality. This was due to their different descriptions of the underlying processes. Hence, it was desirable to examine the feasibility of improving stormwater quality modelling, particularly with respect to heavy metals. During laboratory experiments coarse particles were identified to potentially release significant amounts of heavy metals (mostly in the particulate bound phase) during runoff events. Site/runoff event specific factors (e.g., traffic intensity and street sweeping routines) and characteristics of the particles (i.e. organic content) were identified as influential factors affecting the release of heavy metals. This finding may help improve the description of pollutant transport processes in stormwater quality models. Laboratory experiments showed that various pipe materials (PVC, concrete and corrugated steel) affected the stormwater quality differently, depending on the characteristics of the stormwater used in experiments. The concrete pipe contributed to increase pH of the transported stormwater. Metal concentrations were mostly unaffected in the PVC pipe, decreased in the concrete pipe (due to particle deposition and metal adsorption to the pipe surface), and while Zn concentrations increased in the corrugated steel pipe due to elution, Cu and Pb concentrations were reduced (due to particle deposition in the corrugations). Since the impact of climatic changes on stormwater quality was relatively small compared to changes in socio-economic factors, future efforts to maintain or improve stormwater quality should focus on implementing pollutant abatement strategies, including implementation of well-designed and maintained stormwater treatment measures.

Abstract [en]

Climate change and progressing urbanization cause numerous environmental concerns, including the impacts on urban drainage. Such impacts were addressed during the last two decades with focus on hydraulic overloading of drainage systems and the means of overload remediation by stormwater management. However, modern urban drainage is designed to accomplish much more than just reduce runoff flows and volumes; it also serves to provide and protect broad environmental services chiefly by controlling stormwater quality. During the past 40 years, a sizeable investment has been made in urban drainage systems by their modifications, or additions of new components, to improve stormwater quality and protect receiving water ecosystems. Such investments are at risks, because of impaired performance of stormwater quality controls now and in the future for the following reasons: (i) Hydraulic overloading of stormwater quality control measures resulting from up-scaled precipitation in the changing climate and increasing areas contributing runoff due to expansion of urban areas and/or intensification of urban land use, (ii) Pollution overloading caused not only by the growing inputs of pollutants from progressing urbanization, but also by an increased intensity of pollutant wash-off and transport processes, (iii) the aging of stormwater management systems, which without effective maintenance suffer from deterioration of their performance, and (iv) insufficient attention paid to socio-economic issues concerning environmental policies and practices. The primary objectives of the thesis that follows is to address the above issues by examining future trends in stormwater quality and the influential factors affecting these trends. Trends in urban stormwater quality, in response to projected changes in the climate, urban catchments and their drainage systems, and environmental practices and policies, were studied by systematically describing these changes by a set of scenarios, which were then applied to several test catchments in simulations with two well-established computer models of urban drainage. The scenarios were chosen to reflect both climate change (selected from those offered by the Swedish Meteorological and Hydrological Institute) and the socio-economic factors. The test catchments were selected somewhat opportunistically from those which represented typical Swedish urban catchments and were documented by the available data. Two simulation models were used: The US EPA SWMM representing one of the most widely applied physically-based models, and the WinSLAMM, which compared to SWMM, is a pollutant source based model. In runoff simulations, stormwater quality was described by several important parameters: Total suspended solids (TSS), which are arguably the most important descriptor of stormwater quality, and three ubiquitous heavy metals, namely Cu, Pb and Zn, which reflect the pollution generated by automobile traffic. The assessment of uncertainties in the simulation process and potential changes in sewer pipe materials further inspired two additional studies: Potential improvements in modelling trace metal transport and control by clarifying the role of coarse sediments on road surfaces, and water quality implications of using sewer pipes made from three different materials. Simulations with up-scaled rainfall data produced changes in stormwater quality, depending on the type of storm events. Generally pollutant loads increased due to climate changes characterized by higher depths and intensities of rainfall in future scenarios. Storms with low to intermediate depths and intensities showed the highest sensitivities to climatic changes, because runoff producing areas increased with higher storm intensities (i.e., leading to contributions of pervious areas), and sufficient pollutant supplies on catchment surfaces; for high intensity events, such supplies were quickly exhausted. TSS loads exported from catchments with low imperviousness were most sensitive to climatic changes, but the magnitudes of TSS loads were low compared to those from catchments with high imperviousness. Furthermore, potential changes in catchment characteristics and drainage systems were identified to be of importance. Future progress of urbanization will manifest itself in two ways: expansion of urban areas (urban sprawl) and intensification of land use in the existing areas. Urban sprawl leads to the growth of urban areas and generation of more runoff. Furthermore, it also leads to increased ‘kilometres travelled’, which contributes to an increased magnitude of traffic related pollution. Future scenarios combining changes in climate and socio-economic factors showed that the impacts on stormwater quality caused by climatic changes were smaller than those caused by changes in socio-economic factors. However, future urbanization impacts on stormwater quality could be controlled by incorporating modern stormwater management measures in future catchments. Simulations of such controls indicated that they were highly effective in protecting the stormwater quality, assuming the acceptability of the required investments. Finally it was noted that the two applied computer models produced somewhat different results and high uncertainties when assessing the future stormwater quality. This was due to their different descriptions of the underlying processes. Hence, it was desirable to examine the feasibility of improving stormwater quality modelling, particularly with respect to heavy metals. For stormwater quality described by heavy metals, the wash-off/elution of metals from catchment surface sediment is important, so it was further examined in laboratory experiments. Coarse particles were identified to potentially release significant amounts of heavy metals during runoff events. The released metals were predominantly in the particulate bound phase, since coarse particles acted first as collectors of fine particles in dry weather, but released those particles during rainfall runoff. Site/runoff event specific factors (e.g., traffic intensity and street sweeping routines; energy input into sediment/water interaction) and characteristics of the particles (i.e. organic content) were identified as influential factors affecting the release of heavy metals. This finding may help improve the description of pollutant transport processes in stormwater quality models. Concerning the changes in sewer pipe materials (e.g., substituting PVC or corrugated steel pipes for concrete pipes), laboratory experiments showed that various pipe materials affected the stormwater quality differently, depending on the characteristics of the stormwater used in experiments. All three materials, and particularly concrete, contributed to increased pH of the transported stormwater. Even though metals could be potentially eluted from all the materials tested, metal concentrations were mostly unaffected in the PVC pipe, decreased in the concrete pipe (due to particle deposition and metal adsorption to the pipe surface), and while Zn concentrations increased in the corrugated steel pipe due to elution, Cu and Pb concentrations were reduced. These reductions were explained by the fact that pipe corrugations acted as particle traps, and metal concentrations, except for Zn, were therefore significantly reduced. However, once these traps would fill up, such pollutant removals would cease. Since the impact of climatic changes on stormwater quality was relatively small compared to changes in socio-economic factors, future efforts to maintain or improve stormwater quality should focus on implementing pollutant abatement strategies, including implementation of well-designed and maintained stormwater treatment measures.

Place, publisher, year, edition, pages
Luleå tekniska universitet, 2016
Series
Doctoral thesis / Luleå University of Technology 1 jan 1997 → …, ISSN 1402-1544
National Category
Water Engineering
Research subject
Urban Water Engineering
Identifiers
urn:nbn:se:ltu:diva-26110 (URN)cafc4a66-2286-4fa8-bb2e-fe17d562b50c (Local ID)978-91-7583-620-1 (ISBN)978-91-7583-621-8 (ISBN)cafc4a66-2286-4fa8-bb2e-fe17d562b50c (Archive number)cafc4a66-2286-4fa8-bb2e-fe17d562b50c (OAI)
Note
Godkänd; 2016; 20160419 (matbor); Nedanstående person kommer att disputera för avläggande av teknologie doktorsexamen. Namn: Matthias Borris Ämne: VA-teknik/Urban Water Engineering Avhandling: Future Trends in Urban Stormwater Quality Effects of Changes in Climate, Catchment Characteristics and Processes and Socio-Economic Factors Opponent: Professor Lian Lundy, Urban Pollution Research Centre, Department of Natural Sciences, Middlesex University London, London, United Kingdom. Ordförande: Professor Maria Viklander, Avdelningen för arkitektur och vatten, Institutionen för samhällsbyggnad och naturresurser, Luleå tekniska universitet, Luleå. Tid: Onsdag 15 juni 2016, kl 10.00 Plats: A1545, Luleå tekniska universitetAvailable from: 2016-09-30 Created: 2016-09-30 Last updated: 2017-11-24Bibliographically approved
Borris, M., Leonhardt, G., Marsalek, J., Österlund, H. & Viklander, M. (2016). Source-Based Modeling Of Urban Stormwater Quality Response to the Selected Scenarios Combining Future Changes in Climate and Socio-Economic Factors (ed.). Environmental Management, 58(2), 223-237
Open this publication in new window or tab >>Source-Based Modeling Of Urban Stormwater Quality Response to the Selected Scenarios Combining Future Changes in Climate and Socio-Economic Factors
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2016 (English)In: Environmental Management, ISSN 0364-152X, E-ISSN 1432-1009, Vol. 58, no 2, p. 223-237Article in journal (Refereed) Published
Abstract [en]

The assessment of future trends in urban stormwater quality should be most helpful for ensuring the effectiveness of the existing stormwater quality infrastructure in the future and mitigating the associated impacts on receiving waters. Combined effects of expected changes in climate and socio-economic factors on stormwater quality were examined in two urban test catchments by applying a source-based computer model (WinSLAMM) for TSS and three heavy metals (copper, lead, and zinc) for various future scenarios. Generally, both catchments showed similar responses to the future scenarios and pollutant loads were generally more sensitive to changes in socio-economic factors (i.e., increasing traffic intensities, growth and intensification of the individual land-uses) than in the climate. Specifically, for the selected Intermediate socio-economic scenario and two climate change scenarios (RSP = 2.6 and 8.5), the TSS loads from both catchments increased by about 10 % on average, but when applying the Intermediate climate change scenario (RCP = 4.5) for two SSPs, the Sustainability and Security scenarios (SSP1 and SSP3), the TSS loads increased on average by 70 %. Furthermore, it was observed that well-designed and maintained stormwater treatment facilities targeting local pollution hotspots exhibited the potential to significantly improve stormwater quality, however, at potentially high costs. In fact, it was possible to reduce pollutant loads from both catchments under the future Sustainability scenario (on average, e.g., TSS were reduced by 20 %), compared to the current conditions. The methodology developed in this study was found useful for planning climate change adaptation strategies in the context of local conditions.

National Category
Water Engineering
Research subject
Urban Water Engineering
Identifiers
urn:nbn:se:ltu:diva-12226 (URN)10.1007/s00267-016-0705-3 (DOI)000379159200004 ()27153819 (PubMedID)2-s2.0-84966372800 (Scopus ID)b542075e-b1a2-4a1e-984b-0d645872de91 (Local ID)b542075e-b1a2-4a1e-984b-0d645872de91 (Archive number)b542075e-b1a2-4a1e-984b-0d645872de91 (OAI)
Note

Validerad; 2016; Nivå 2; 20160509 (matbor)

Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved
Borris, M., Leonhardt, G., Marsalek, J., Österlund, H. & Viklander, M. (2015). Source-based modeling of stormwater quality response to projected future changes in climatic and socio-economic factors (ed.). In: (Ed.), Thomas Maere; Sovanna Tik; Sophie Duchense; Peter A. Vanrolleghem (Ed.), Urban Drainage Modelling 2015: Poster presentations : Proceedings of the 10th International Conference of Urban Drainage Modelling, Mont-Sainte-Anne, Québec, Canada 20-23 Swptember 2015. Paper presented at International Urban Drainage Modelling Conference : 20/09/2015 - 23/09/2015 (pp. 73-78).
Open this publication in new window or tab >>Source-based modeling of stormwater quality response to projected future changes in climatic and socio-economic factors
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2015 (English)In: Urban Drainage Modelling 2015: Poster presentations : Proceedings of the 10th International Conference of Urban Drainage Modelling, Mont-Sainte-Anne, Québec, Canada 20-23 Swptember 2015 / [ed] Thomas Maere; Sovanna Tik; Sophie Duchense; Peter A. Vanrolleghem, 2015, p. 73-78Conference paper, Published paper (Other academic)
National Category
Water Engineering
Research subject
Urban Water Engineering
Identifiers
urn:nbn:se:ltu:diva-31592 (URN)5d0b8828-2eb7-4322-9ad5-225af94a68e1 (Local ID)5d0b8828-2eb7-4322-9ad5-225af94a68e1 (Archive number)5d0b8828-2eb7-4322-9ad5-225af94a68e1 (OAI)
Conference
International Urban Drainage Modelling Conference : 20/09/2015 - 23/09/2015
Note
Godkänd; 2015; 20151009 (andbra)Available from: 2016-09-30 Created: 2016-09-30 Last updated: 2018-02-26Bibliographically approved
Borris, M., Gustafsson, A.-M., Viklander, M. & Marsalek, J. (2014). Continuous simulations of urban stormwater runoff and total suspended solids loads: influence of varying climatic inputs and catchment imperviousness (ed.). Paper presented at . Journal of Water and Climate, 5(4), 593-609
Open this publication in new window or tab >>Continuous simulations of urban stormwater runoff and total suspended solids loads: influence of varying climatic inputs and catchment imperviousness
2014 (English)In: Journal of Water and Climate, ISSN 2040-2244, Vol. 5, no 4, p. 593-609Article in journal (Refereed) Published
Abstract [en]

Potential implications of climate change for future stormwater management were addressed by undertaking continuous simulations of runoff and total suspended solids (TSS) loads for three urban catchments, with imperviousness varying from 23 to 63%, which were exposed to five rainfall regimes during the snow-free part of the year: the current climate and four climate change scenarios projecting higher rainfalls. Simulated runoff volumes increased in all the future scenarios, particularly in the sub-arctic climate and the fixed uplift scenario (plus20) indicating appreciable rainfall increases. Simulated runoff volumes increased depending on the projected increases in rainfall and increasing runoff contributions from pervious areas when more intense future rainfalls exceeded hydrologic abstractions. The increased runoff volumes then contributed higher TSS loads, which were highly variable for the rainfall regimes tested. In cold climate regions, residues of solids from winter road maintenance may contribute to high initial accumulations of TSS on the catchment surface and high washed off loads. In general, the study suggests that intermediate design-life stormwater management facilities require flexible design allowing for future step-wise adaptation by gradually increasing design capacities and modifying treatment trains.

National Category
Water Engineering
Research subject
Urban Water Engineering
Identifiers
urn:nbn:se:ltu:diva-6308 (URN)10.2166/wcc.2014.121 (DOI)000346412000008 ()4878cd54-dad4-4ef0-ad45-f6f572e4c513 (Local ID)4878cd54-dad4-4ef0-ad45-f6f572e4c513 (Archive number)4878cd54-dad4-4ef0-ad45-f6f572e4c513 (OAI)
Note
Validerad; 2015; Nivå 2; 20141204 (matbor)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved
Borris, M., Viklander, M., Gustafsson, A.-M. & Marsalek, J. (2014). Modelling the effects of changes in rainfall event characteristics on TSS loads in urban runoff (ed.). Paper presented at . Hydrological Processes, 28(4), 1787-1796
Open this publication in new window or tab >>Modelling the effects of changes in rainfall event characteristics on TSS loads in urban runoff
2014 (English)In: Hydrological Processes, ISSN 0885-6087, E-ISSN 1099-1085, Vol. 28, no 4, p. 1787-1796Article in journal (Refereed) Published
Abstract [en]

The effect of changes in rainfall event characteristics on urban stormwater quality, which was described by total suspended solids (TSS), was studied by means of computer simulations conducted with the Storm Water Management Model for a climate change scenario for northern Sweden. The simulation results showed that TSS event loads depended mainly on rainfall depth and intensity, but not on antecedent conditions. Storms with low-to-intermediate depths and intensities showed the highest sensitivity to changes in rainfall input, both for percentage and absolute changes in TSS wash-off loads, which was explained by the contribution of pervious areas and supply limitations. This has significant implications for stormwater management, because those relatively frequent events generally carry a high percentage of the annual pollutant load

National Category
Water Engineering
Research subject
Urban Water Engineering
Identifiers
urn:nbn:se:ltu:diva-7062 (URN)10.1002/hyp.9729 (DOI)000330743000019 ()2-s2.0-84892431724 (Scopus ID)56030c63-9bd3-463d-bb93-a479d9723a14 (Local ID)56030c63-9bd3-463d-bb93-a479d9723a14 (Archive number)56030c63-9bd3-463d-bb93-a479d9723a14 (OAI)
Note
Validerad; 2014; 20130221 (andbra)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved
Borris, M. (2013). Influential factors in simulations of future urban stormwater quality: Climate change, progressing urbanization and environmental policies (ed.). (Licentiate dissertation). Paper presented at . Luleå: Luleå tekniska universitet
Open this publication in new window or tab >>Influential factors in simulations of future urban stormwater quality: Climate change, progressing urbanization and environmental policies
2013 (English)Licentiate thesis, comprehensive summary (Other academic)
Abstract [en]

Climate change is regarded as one of the main future challenges implyingchanging hydrological conditions in urban areas. At the same time many urbanareas are expected to grow due to increasing population, which will most likelycause a higher level of urbanization. Combined effects of climatic changes andprogressing urbanization will have an impact on the abundance of pollutantsand the capacity for their transport. Due to this it is most likely that stormwaterquality will change as well. Effects of climatic changes, progressingurbanization and changing environmental policies on urban stormwater qualitywere studied by means of computer simulations for different test catchments inSweden. Scenarios accounting for such changes were developed and simulatedwith the Storm Water Management Model (SWMM), in which stormwaterquality was described by total suspended solids (TSS) and two heavy metals,namely copper and zinc. The simulation results showed that pollutant loadsdepended mainly on rainfall depth and intensity, but not on antecedent periods.Storms with low to intermediate depths and intensities showed the highestsensitivities to climatic changes and the reason for that was the contribution ofpervious areas and pollutant supply limited conditions. Catchments with lowimperviousness were most sensitive to climatic changes, but the total TSSloads were low compared to catchments with high imperviousness. Generallypollutant loads increased due to climatic changes characterized by higherdepths and intensities of rainfall in future scenarios. Furthermore stormwaterquality changed significantly for scenarios considering a progressingurbanization. A changing catchment area and impervious fraction caused highchanges in runoff volumes and pollutant loads. Thus changes in suchcatchment characteristics were identified as the most influential factors; inmost of the cases changes caused by climate change were exceeded.Environmental policies, as for example the reduction of directly connectedimpervious areas were effective in reducing runoff volumes and consequentlypollutant loads. Furthermore pollutant source controls, including materialsubstitution, were identified to be an effective tool for reducing pollutant loadsand improving stormwater quality. Generally changes produced by climaticchanges were small compared to the effects of changes in land use and this hasimplications for the management of stormwater quality.

Abstract [sv]

Klimatförändringen anses vara en av de viktigaste framtida utmaningarna och innebär förändrade hydrologiska förhållanden i stadsområden. Samtidigt förväntas många stadsområden växa till följd av ökande befolkning, som med största sannolikhet kommer att orsaka en högre grad av urbanisering. De kombinerade effekterna av klimatförändringar och urbanisering kommer att ha en påverkan på förekomsten av föroreningar. På grund av detta är det också mest troligt att dagvattenkvaliteten kommer att förändras. Effekter av klimatförändringar, urbanisering och förändrad miljöpolitik kring hantering av urban dagvattenkvalitet studerades med hjälp av datorsimuleringar för olika testavrinningsområden i Sverige. Scenarier som beskriver sådana förändringar har tagits fram och simulerats med en modell som kallas ’’Storm Water Management Model’’ (SWMM). I modellen beskrevs dagvattenkvaliteten av totalt suspenderat material (TSS) och två tungmetaller, nämligen koppar och zink. Simuleringen visade att föroreningsmängder främst berodde på nederbördsmängd och -intensitet, men däremot inte på torrperioder. Regn med låg till medellåg mängd och intensitet uppvisade den högsta känsligheten för klimatförändringar. Anledningen till det var bidrag från permeabla ytor och begränsningar av föroreningsutbud. Avrinningsområden med låg andel av hårdgjorda ytor var mest känsliga för klimatförändringar, men totala TSSmängder var låga jämfört med avrinningsområden med hög andel av hårdgjorda ytor. Generellt ökade föroreningsmängderna till följd av klimatförändringar som karaktäriserades av högre mängd och intensitet av nederbörd i framtidsscenarier. Dessutom förändrades dagvattenkvaliteten avsevärt för scenarier som beskriver en urbanisering. En förändring av area och andel av hårdgjorda ytor orsakade stora förändringar i avrinningsvolymer och föroreningsmängder. Förändringar av avrinningsområdenas egenskaper har identifierats som de mest inflytelserika faktorerna, i de flesta fall med större påverkan än klimatförändringar. Miljöpolitik, som till exempel en minskning av direkt anslutna hårdgjorda ytor, var effektiva för att minska avrinningsvolymer och därmed föroreningsmängder. Begränsning av föroreningskällor, inklusive materialsubstitution, identifierades också till att vara ett effektivt sätt för att minska föroreningsmängder och förbättra dagvattenkvaliteten. Generellt såg man att förändringar i dagvattenkvaliteten orsakade av klimatförändringar var små jämfört med effekterna av förändringar i markanvändning. Detta får konsekvenser för hanteringen av dagvattenkvaliteten.

Place, publisher, year, edition, pages
Luleå: Luleå tekniska universitet, 2013
Series
Licentiate thesis / Luleå University of Technology, ISSN 1402-1757
National Category
Water Engineering
Research subject
Urban Water Engineering
Identifiers
urn:nbn:se:ltu:diva-18774 (URN)a35dfca7-41f2-49a4-bb97-5104f8f9f17e (Local ID)978-91-7439-627-0 (ISBN)978-91-7439-628-7 (ISBN)a35dfca7-41f2-49a4-bb97-5104f8f9f17e (Archive number)a35dfca7-41f2-49a4-bb97-5104f8f9f17e (OAI)
Note
Godkänd; 2013; 20130405 (matbor); Tillkännagivande licentiatseminarium 2013-05-31 Nedanstående person kommer att hålla licentiatseminarium för avläggande av teknologie licentiatexamen. Namn: Matthias Borris Ämne: VA-teknik/Sanitary Engineering Uppsats: Influential Factors in Simulations of Future Urban Stormwater Quality Climate Change, Progressing Urbanization and Environmental Policies Examinator: Professor Maria Viklander, Institutionen för samhällsbyggnad och naturresurser, Luleå tekniska universitet Diskutant: Senior forskare Tone Merete Muthanna, Norwegian University of Science and Technology, Trondheim, Norway Tid: Tisdag den 4 juni 2013 kl 10.00 Plats: C305, Luleå tekniska universitetAvailable from: 2016-09-29 Created: 2016-09-29 Last updated: 2017-11-24Bibliographically approved
Borris, M., Viklander, M., Gustafsson, A.-M. & Marsalek, J. (2013). Simulating future trends in urban stormwater quality for changing climate, urban land use and environmental controls (ed.). Paper presented at . Water Science and Technology, 68(9), 2082-2089
Open this publication in new window or tab >>Simulating future trends in urban stormwater quality for changing climate, urban land use and environmental controls
2013 (English)In: Water Science and Technology, ISSN 0273-1223, E-ISSN 1996-9732, Vol. 68, no 9, p. 2082-2089Article in journal (Refereed) Published
Abstract [en]

The effects of climatic changes, progressing urbanization and improved environmental controls on the simulated urban stormwater quality in a northern Sweden community were studied. Future scenarios accounting for those changes were developed and their effects simulated with the Storm Water Management Model (SWMM). It was observed that the simulated stormwater quality was highly sensitive to the scenarios, mimicking progressing urbanization with varying catchment imperviousness and area. Thus, land use change was identified as one of the most influential factors and in some scenarios, urban growth caused changes in runoff quantity and quality exceeding those caused by a changing climate. Adaptation measures, including the reduction of directly connected impervious surfaces (DCIS) through the integration of more green spaces into the urban landscape, or disconnection of DCIS were effective in reducing runoff volume and pollutant loads. Furthermore, pollutant source control measures, including material substitution, were effective in reducing pollutant loads and significantly improving stormwater quality

National Category
Water Engineering
Research subject
Urban Water Engineering
Identifiers
urn:nbn:se:ltu:diva-3459 (URN)10.2166/wst.2013.465 (DOI)000328070200025 ()24225112 (PubMedID)2-s2.0-84890149594 (Scopus ID)148e6e66-a9ab-4a17-a65a-670f2e3ac1dd (Local ID)148e6e66-a9ab-4a17-a65a-670f2e3ac1dd (Archive number)148e6e66-a9ab-4a17-a65a-670f2e3ac1dd (OAI)
Note
Validerad; 2013; 20131119 (andbra)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved
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