Development of an integrated software tool for strategic planning and conceptual design of water sensitive cities

Transcription

1 Development of an integrated software tool for strategic planning and conceptual design of water sensitive cities C. B. S. Dotto, R. Allen, T. Wong and A. Deletic

2 Key Deliverables Cities as Water Supply Catchments Evolving Blue Print : Realisation of Water Sensitive Cities through stormwater harvesting Toolkits: novel technologies, software packages, and frameworks to support the delivery of the Blue Print; Capacity Building and Demonstration Sites: support establishment of key capital works that will demonstrate WSC through stormwater harvesting. allotment streetscape

3 Research Framework $14 million and 5 year long project We are ½ way there!

4 Software tool for strategic planning and conceptual design of stormwater management systems in a water sensitive city Support the planning and conceptualisation of WSUD scenarios, and subsequently evaluate the performance of different scenarios across a broad range of measures Modelling approach (i) (ii) Scenario Generation Scenario Simulation &

5 Schematic diagram Scenario Generation Participatory Process Scenario Simulation process Bio-Physical Treatment / Harvesting Planning Receptivity Needs Stormwater Management Scenario(s) Variability Hazard Form Data WSUD Conceptual Design Micro- Impacts Economic Valuation Stream Health Outcomes Contribution to Liveability

6 Scenario Generation Needs Planning Needs Stormwater Management Scenario(s) Form identify urban water needs of local communities that can be influenced by stormwater management inform the evaluation of scenario contributions to liveability within the scenario assessment component of the model (Adamowicz & Johnstone, 2012)

7 Scenario Generation Planning Planning Needs Stormwater Management Scenario(s) relevant high level urban planning guidance and regulations participatory input from stakeholders Hazard identify current local strategic and statutory planning considerations & determine additional contribution

8 Scenario Generation Receptivity Planning Receptivity Needs Stormwater Management Scenario(s) results and observations from studies focused on community norms and community engagement guide on identifying policy tools and capacity building strategies to accelerate the implementation of WSUD technologies and practices and to increase (Clarke and Brown, 2006) industry/community receptivity

9 Scenario Generation Variability urban climate predictions (e.g. rainfall, Planning Receptivity Needs Stormwater Management Scenario(s) evapotranspiration, temperatures and humidity) and the uncertainty associated with these predictions (100, 1000s of scenarios) Variability analysis of future climate scenarios inputs to the bio-physical assessment

10 Scenario Generation Hazard public health hazard and risk assessments Planning Receptivity Needs Stormwater Management Scenario(s) Variability Hazard of WSUD systems links to relevant national and state regulations and guidance on water recycling and pollution control guidance on how to implement and operate stormwater harvesting and use systems to meet the required health and safety standards for potable and nonpotable water use

11 Scenario Generation Form & Data Planning Needs Form Receptivity Stormwater Management Scenario(s) Variability Hazard Data

12 Schematic diagram Scenario Generation Participatory Process Scenario Simulation process Bio-Physical Treatment / Harvesting Planning Receptivity Needs Stormwater Management Scenario(s) Variability Hazard Form Data WSUD Conceptual Design Micro- Impacts Economic Valuation Stream Health Outcomes Contribution to Liveability

13 Scenario WSUD Conceptual Design BEATS explores and evaluates a range of decentralised water management configurations WSUD Conceptual Design Scenario Provide indicative conceptual designs for sustainable urban water technologies for a scenario (by determining where and how these could be preferably implemented) to meet required health and safety standards for potable and non-potable water use (BEATS - Bach, P., 2012;

14 Scenario Treatment / Harvesting MUSIC (ewatercrc, 2011) - Beta version runoff from pervious and impervious surfaces pollutant generation (stochastic approach) Bio-Physical Treatment / Harvesting treatment and harvesting efficiency (USTM) evaluate the treatment and harvesting WSUD Conceptual Design performance of the different WSUD realisations

15 Scenario Micro- Impacts air temperature reduction from mitigation strategies most appropriate scale for Human Thermal Comfort assessments Micro- Impacts Bio-Physical Treatment / Harvesting Thunderstorms Analogue images (Courtesy of Emma White & Nigel Tapper) Land Surface Temperatures: 20/4/2010 & 22/4/2010 evaluate the urban micro-climate benefits WSUD Conceptual Design of different WSUD configurations Difference (22 April 20 April)

16 Scenario Stream Health Outcomes Environmental Benefit Index (EBI - Little Stringybark Creek, 2012) (i) (ii) FF = (1 max reduction in flow frequency equivalence between the pre-urban volume of subsurface flows and filtered flows (iii) median concentrations of TSS, P and N in filtered flows (iv) reduction in total volume of water exported (used or lost) FrequencyTreated FrequencyPredevelop FrequencyUntreated FrequencyPredevelop, 0 A/100 VV = (1 V e V c ) A/100 V e WSUD Conceptual Design Micro- Impacts Bio-Physical Treatment / Harvesting Stream Health Outcomes assess the impacts of different WSUD configurations on stream health

17 Scenario Economic Valuation economic valuations of a number of nonmarket benefits provided by WSUD Bio-Physical Treatment / Harvesting technologies and practices Micro- Impacts Stream Health Outcomes guide potential optimal investment in stormwater management technologies WSUD Conceptual Design Economic Valuation

18 Scenario Contribution to Liveability Simulation process Bio-Physical Treatment / Harvesting Micro- Impacts Stream Health Outcomes WSUD Conceptual Design Contribution to Liveability Economic Valuation

19 Where are we? Finalizing beta version Collaboration with colleagues from University of Innsbruck

20 Where are we? Scenario Generation Planning Needs Form Receptivity Stormwater Management Scenario(s) Variability Hazard Data

21 Where are we? Scenario Bio-Physical Treatment / Harvesting Stream Health Outcomes WSUD Conceptual Design

22 Future Outcomes from ongoing research other aspects of water sensitive stormwater management (e.g. local flood protection) different scales (e.g. micro-climate benefits at the street scale).

23 CRC for Water Sensitive Cities 2012

24 CRC for Water Sensitive Cities 2012