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Martin Rygaard
Technical University of Denmark
92Publications
10H-index
364Citations
Publications 97
Newest
#1Hjalte Jomo Danielsen Sørup (DTU: Technical University of Denmark)H-Index: 6
#2Sarah Brudler (DTU: Technical University of Denmark)H-Index: 2
Last.Karsten Arnbjerg-Nielsen (DTU: Technical University of Denmark)H-Index: 24
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Abstract Water is key to keeping urban areas safe and healthy for humans and hence safe sanitation and waste water treatment is promoted by the United Nations Sustainable Development Goals. We show that emissions from existing state-of-the-art water technologies are problematic from a Planetary Boundaries (PBs) perspective. The magnitude of the climate change impact in relation to the PB based normalization is much higher than for any other PB. The current paradigm for urban water management nee...
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#2Jonas Kjeld Kirstein (DTU: Technical University of Denmark)H-Index: 1
Last.Brian Elmegaard (DTU: Technical University of Denmark)H-Index: 26
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Abstract This paper explores the potential for using large-scale heat pumps (HPs) to extract energy from Copenhagen's drinking water network and deliver it to its district heating system. The system involves certain losses in terms of additional heat and power consumption for end-use water heating. The net potential for energy extraction was analysed by means of an EPANET model to simulate system-wide temperatures in a piped distribution network. The model was validated against measured data fro...
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#1Ryle Nørskov Gejl (DTU: Technical University of Denmark)H-Index: 2
#2Poul Løgstrup Bjerg (DTU: Technical University of Denmark)H-Index: 45
Last.Martin Rygaard (DTU: Technical University of Denmark)H-Index: 10
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Abstract Planning for sustainable groundwater abstraction requires realistic and reliable assessments of groundwater drawdown in aquifers as well as impacted groundwater-dependent terrestrial and aquatic ecosystems. Present-day impact assessments allocate water for the environment and ecosystems in the form of environmental groundwater requirements (EGWRs). However, securing sustainable groundwater abstraction also requires stable groundwater quality for consumers and receptors (e.g. streams and...
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#1Ryle Nørskov GejlH-Index: 2
#2Martin RygaardH-Index: 10
Last.Poul Løgstrup BjergH-Index: 45
view all 5 authors...
Abstract It is vital to understand long-term trends in water quality parameters when assessing the sustainability of groundwater abstraction. Withdrawal-to-availability analysis is still used widely in groundwater management considering quantities and utilization rates based on in- and outflows. In this study, we took a step further than the water balance approach and carried out a detailed investigation of trends in long-term time series of groundwater quality, in order to analyze the sustainab...
6 CitationsSource
#1Sarah Brudler (DTU: Technical University of Denmark)H-Index: 2
#2Karsten Arnbjerg-Nielsen (DTU: Technical University of Denmark)H-Index: 24
Last.Martin Rygaard (DTU: Technical University of Denmark)H-Index: 10
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Abstract The implementation, operation and decommissioning of stormwater management systems causes environmental damage, while at the same time reducing pollutant loads in receiving waters by treating stormwater. The focus in research has been either on assessing impacts caused by stormwater infrastructure, or risks associated with stormwater discharges, but rarely have these two sources of environmental impacts been combined to allow a comprehensive environmental evaluation of stormwater manage...
2 CitationsSource
#1Sarah BrudlerH-Index: 2
#2Martin RygaardH-Index: 10
Last.Luca VezzaroH-Index: 11
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Abstract Stormwater carries pollutants that potentially cause negative environmental impacts to receiving water bodies, which can be quantified using life cycle impact assessment (LCIA). We compiled a list of 20 metals, almost 300 organic compounds, and nutrients potentially present in stormwater, and measured concentrations reported in literature. We calculated mean pollutant concentrations, which we then translated to generic impacts per litre of stormwater discharged, using existing LCIA char...
5 CitationsSource
#1Maria FaragòH-Index: 1
#2Sarah BrudlerH-Index: 2
Last.Martin RygaardH-Index: 10
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Abstract Urban areas in Denmark are currently challenged by the increase in extreme precipitation events, resulting in heightened flood risk, and higher water stress caused by population growth. Therefore, we need to diversify water resources and reshape stormwater management. Our study evaluated the potential for increasing economic value while reducing the environmental impacts of implementing new concepts for non-potable rainwater use in a new urban development. We analysed five alternatives:...
1 CitationsSource
#1Jonas Kjeld Kirstein (DTU: Technical University of Denmark)H-Index: 1
#2Klavs Høgh (NIRAS)
Last.Morten Borup (DTU: Technical University of Denmark)H-Index: 6
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ABSTRACTWe propose a method for quality assurance of raw data from water distribution networks in near real-time. Well-known and novel data analysis methods, including a timestamp drift test, are c...
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#1Berit GodskesenH-Index: 7
Last.Martin RygaardH-Index: 10
view all 5 authors...
#1Berit GodskesenH-Index: 7
#2D. D. Sundaram (DTU: Technical University of Denmark)
Last.Martin RygaardH-Index: 10
view all 4 authors...
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