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Student: Anja Randjelovic Mentors: Nenad Jacimovic , Ana Deletic

Micropollutants in Water Sensitive Urban Design systems Part of TR37010: Urban Drainage Systems as Key Infrastructures in Cities and Towns. Student: Anja Randjelovic Mentors: Nenad Jacimovic , Ana Deletic. Micropollutants ?.

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Student: Anja Randjelovic Mentors: Nenad Jacimovic , Ana Deletic

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  1. Micropollutants in Water Sensitive Urban Design systemsPart of TR37010: Urban Drainage Systems as Key Infrastructures in Cities and Towns Student: AnjaRandjelovic Mentors: NenadJacimovic, Ana Deletic Blue Green Dream Workshop 26.04.2013.

  2. Micropollutants? • Industrial chemicals, flame retardants, pharmaceutically active compounds and their metabolic products (even heavy metals) • Present ubiquitously in the aquatic environment in orders of micrograms and nanograms per liter • Conventional treatment systems cannot “cope” with them • EU Water Framework directive – list of priority pollutants (to be revised every four years) Annex II of Directive 2008/105/EC Blue Green Dream Workshop 26.04.2013.

  3. Sources of micropollutants • Life habits of present day population: polymer construction materials, paints, detergents, pharmaceuticals, pesticides... • Point sources – industries, medical waste, conventional waste water treatment plants • Diffuse sources – entire urban or rural catchment • Due to the persistence, the bioaccumulation potential and the toxicity of micropollutants, it is necessary to minimize their input into the sewage system and water bodies. Blue Green Dream Workshop 26.04.2013.

  4. Water Sensitive Urban Design Systems Gross Pollutant Trap Buffer Strip Vegetated Swale Systems less suspected to help with micropollutants Blue Green Dream Workshop 26.04.2013.

  5. Water Sensitive Urban Design Systems Constructed Wetland Detention pond Blue Green Dream Workshop 26.04.2013.

  6. Water Sensitive Urban Design Systems Biofiltration System Infiltration System Blue Green Dream Workshop 26.04.2013.

  7. Modelling concepts • Conceptual models • Simple mass balances • Modular – possibilities for integrated modeling • Quantity detached from quality module • Catchment, routing, treatment system... • Flexible • Quality modules – processes/fate of pollutants governed by their inherent properties. • Use of available data • Ie. Inherent properties of micropollutants – use of public databases Catchment WSUD Routing Blue Green Dream Workshop 26.04.2013.

  8. Catchment WSUD Routing Micropollutants before WSUD 1a. Catchment scale water quantity submodel MOPUS (SymHid based) 1b. Sewer system routing Muskingum - Cunge …to WSUD Blue Green Dream Workshop 26.04.2013.

  9. Catchment WSUD Routing Micropollutants before WSUD 2a. Pollution generation – EMC – stochastic (MUSIC concept) 2b. Pollution generation – EMC – semi-stochastic (Bach et al. 2010) Blue Green Dream Workshop 26.04.2013.

  10. Rain ET Inflow Outflow Volume Seep Catchment WSUD Micropollutants in and after WSUD Routing 3a. Water quantity - Dominant horizontal flow Used for: - Detention Ponds - Wetlands etc. Mass conservation: Blue Green Dream Workshop 26.04.2013.

  11. Catchment WSUD Micropollutants in and after WSUD Routing 3a. Water Quantity - Dominant vertical flow • Used for: • Infiltration Systems • - Biofilters etc. Blue Green Dream Workshop 26.04.2013.

  12. Micropollutants in and after WSUD 3b. WSUD systems, Universal Stormwater Treatment Model (Wong et al. 2006) Series of Continuous Stirred Tank Reactors Phase 1: Mixing Phase 2: Removal process Vo co Qin cin Qout cout = co Blue Green Dream Workshop 26.04.2013.

  13. Water Photolysis Volatilization P D • Qin, Pin Din Partitioning (slow/fast) • Qout, PoutDout Hydrolysis Settling / resuspension Aerobic/Anaerobic biodegradation Diffusion Sediment Plant uptake Aerobic/Anaerobic biodegradation D P Partitioning Straining Hydrolysis • Qout, Pout Dout Phase 2: Compartment process modelling Particulate phase Mechanical processes Dissolved phase Physical Physico-chemical Bio-chemical Blue Green Dream Workshop 26.04.2013.

  14. Preliminary study - tracers Water Quantity Water Quality

  15. Thank you!

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