Water for Smart Liveable Cities

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1 Water for Smart Liveable Cities Peter Steen Mikkelsen Professor, DTU Environment Head of Water DTU, Center for Water Activities at DTU DTU Environment delegation visit to PUB - Singapore National Water Agency 8 th September 2015

2 Center for Water Activities at DTU

3 August 2015, more departments will join Water DTU departments DTU Environment - Dept. of Environmental Engineering DTU Chemical Engineering Dept. of Chemical and Biochemical Engin. DTU Civil Engineering Dept. of Civil Engineering DTU Compute Dept. of Mathematics and Computer Science DTU Management Engineering Dept. of Management Engineering DTU Space National Space Institute DTU Nanotech Dept. of Micro- and Nanotechnology DTU Fotonik Dept. of Photonics Engineering DTU Energy Dept. of Energy Conversion and Storage DTU Aqua National Institute of Aquatic Research DTU Food National Food Institute DTU Vet National Veterinary Institute DTU Diplom - Center for Bachelor of Engineering Studies DTU AIS Office for Innovation and Sector Services 150 Year Jubilee - Environmental Engineering at DTU 27/8/2015

4 Proposal for hosting the IWA International World Water Congress & Exhibition in Copenhagen, 2020 (decision by IWA Geneal Assembly in Oct-15) Water for Smart Liveable Cities Water supply Waste water collection and treatment Sustainable stormwater management Recreational water Water Smart Planning, developing and implementing innovative solutions Integrating technologies and management concepts Monitoring and mapping technologies Advanced ICT solutions Cities Livable Holistic governance Integrated planning and management Climate change resilient cities Water safety planning Creating healthy environments Improving urban living conditions Using water in the urban landscape 4 DTU Environment, Technical University of Denmark Water for Smart Liveable Cities Peter Steen Mikkelsen, psmi@env.dtu.dk 08/09/2015

5

6 Copenhagen in nice weather

7 Copenhagen in nice weather

8 Developed area Drinking water distribution Reservoir Sewer system Percolation Detention Storage tank Drainage from private property and streets Rainfall-runoff process Sedimentation Overflow structure Combined sewer overflow Integrated Urban Water System Integrated Urban Drainage System = Integrated Urban Wastewater System Drinking water treatment Ground water infiltration / exfiltration Wastewater treatment plant In-/Exfiltration Receiving water Purification Waste disposal Stormwater Management is about dynamics, and a lot more Adapted from: Krebs, P. (1996): Interdependencies and dynamics within the urban water management. EAWAG News, 41E, November 1996, pp

9 When it rains the pollution challenge!

10 When it rains a lot... Copenhagen Lyngbyvej 16 Aug 2010 Copenhagen City 2 July 2011 The climate and Photo: densification Bente Schou challenge

11 The traditional system thinking is changing Limiting release through: - Substitution - Minimising release from products - Legislation and regulations - Voluntary use reductions Treatment options: - Stormwater BMPs - Household treatment & reuse of WW - On-site industrial treatment - WWTPs - Sludge disposal Real time monitoring, modeling, and control: - WWTP monitoring and control - Rainfall measurement and forecasting - Flow and water quality monitoring - Data assimilation into models - Model predictive control Example: Combined system: D+T T D+T O+T Adaptation and resilience: - Climate change -> Cities are changed - Opportunities arise for source control Main challenges: Maintenance, climate change, micropollutants, creating attractive jobs, => Creating smarter and more liveable cities D+T T R+T T T

12 What is a Smart Liveable City? 12 DTU Environment, Technical University of Denmark Water for Smart Liveable Cities Peter Steen Mikkelsen, psmi@env.dtu.dk 08/09/2015

13 Use classical urban drainage solutions? 13 DTU Environment, Technical University of Denmark Water for Smart Liveable Cities Peter Steen Mikkelsen, 08/09/2015

14 Water in Smart Liveable Cities, activities at DTU Copenhagen after cloudburst Lyngbyvej 16 Aug Copenhagen in nice weather Photo: Bente Schou 14 DTU Environment, Technical University of Denmark Water for Smart Liveable Cities Peter Steen Mikkelsen, 08/09/2015

15 Risk assesments Flooding 15 DTU Miljø, Danmarks Tekniske Universitet Zhou et al, JoH, Præsentationens navn 08/09/

16 Case study incl. other impacts Flash floods Recreational value Investment [MDKK] NPV1 NPV2 Do nothing Larger pipes Lokal infiltration OUDS OUDS OUDS Slide: Prof. K Arnbjerg-Nielsen Zhou et al, EM, DTU Miljø, Danmarks Tekniske Universitet Præsentationens navn 08/09/2015

17 17 DTU Miljø, Danmarks Tekniske Universitet Præsentationens navn 08/09/2015

18 26/07/ Bryggervangen and Skt. Kjelds Plads 18 DTU Environment, Technical University of Denmark Water for Smart Liveable Cities Peter Steen Mikkelsen, psmi@env.dtu.dk 08/09/2015

19 Storm- and Wastewater Informatics Supported by Strategic Res Council 4 M EUR, DTU Environment, Compute, Chem Eng. Aalborg University, DHI, Krüger HOFOR & BIOFOS (Cph utilities), Aarhus Water

20 Elements of the SWI project Stochastic MPC of integrated systems now future Radar Model Rainfall predictions Catchment WWTP Risk based control strategy (DORA) Q max predictions Model Model now future -Vezzaro & Grum (2012): 9th UDM Conf., Belgrade, Proceedings -Vezzaro, Löwe, Madsen, Grum & Mikkelsen: NOVATECH, Lyon. Runoff predictions

21 Water-energy system integration

22 IUWS scale pollutant fate modelling (Integrating different sub-system models) SOURCES Boundaries of the urban system RELEASE Soil / Groundwater WWTP Fate models technosphere Treatment options Stormwater BMPs Septic tank on-line sludge treatment Activated sludge biofilters Air Physical-chemical treatment Lagoon/pond SURFACE WATER Sludge Sediments Fate models environment Water Air Vezzaro, L., Benedetti, L., Gevaert, V., De Keyser, W., Verdonck, F., De Baets, B., Nopens, I., Cloutier, F., Vanrolleghem, P.A. and Mikkelsen, P.S. (2014): A model library for dynamic transport and fate of micropollutants in integrated urban wastewater and stormwater systems. Environ. Modelling & Software.

23 Issues and Tools Construction work Maintenance Energy optimization Numerical Weather Prediction Models WWTP Wet Weather Operation Infrastructure planning Asset management Actuator regulation Radar Network storage Control Seconds Minutes Hours Days Weeks Months Years Decades Sewer system conveyance WWTP sludge distribution Pluvial Flooding Resuspension Sewer system storage Settling Inflow & Inflitration (RDII & ground water) Phenomena Demographic change Climate change (effects)

24 Input to building cities of the future Optimum design Water Infrastructure CC impacts LID / SUDS Development Time City infrastructure City World 24 DTU Miljø, Danmarks Tekniske Universitet Land use Population Hazards Time Individualism Flexibility Opportunities Time Ressource allocation Human health Water Præsentationens Time navn 08/09/2015 Slide: Karsten Arnbjerg-Nielsen

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