Professor Graeme Dandy from the University of Adelaide presenting on Optimisation of Water Management at the Landscape Science Cluster Seminar, May 2009

1. Optimisation of Water Management Prof. Graeme Dandy School of Civil, Environmental and Mining Engineering University of Adelaide

7. Genetic Algorithm Optimisation

9. Typical GA string Distribution Network Pipe Material Distribution Network Pipe Diameters Pump Size Collection Network Pipe Material

10. Solution Cost ($ million) 30 40 50 60 70 80 90 100 0 50,000 100,000 150,000 200,000 Number of Solution Evaluations The GA conducts a directed search for optimal solutions Repeat Towards Convergence

11. Multi-Objective Optimisation

12. Multi-Objective Optimisation Pareto Optimal Front

13. Optimum Planning of Urban Water Systems (Regional Scale)

14. TEMPORAL SCENARIOS SUPPLY TYPE ALTERNATIVES

16. Risk Based Performance Assessment

19. Approximate trade-offs between supply types

20. Optimal Tradeoffs – Southern System

21. Breakpoint (250ML/day, 2KL) (251ML/day, 1.8KL) (248ML/day, 2.6KL) Optimal Tradeoffs – Southern System

22. $45/tonne $1000/tonne Breakpoint (250ML/day, 2KL) (251ML/day, 1.8KL) (248ML/day, 2.6KL) Optimal Tradeoffs – Southern System

24. Sensitivity Analysis of the Optimisation Process

27. Resource Optimisation Framework for the Upper South East Region of SA

32. Integrated Modelling Framework groundwater response Regulator Decision Point shut open flow flow runoff, salinity rainfall evap. runoff, salinity runoff, salinity runoff, salinity rainfall evap. rainfall evap. rainfall evap. wetland response environmental conditions

38. Hydrologic Modelling

40. Integrated Modelling Framework groundwater response Regulator Decision Point shut open flow flow runoff, salinity rainfall evap. runoff, salinity runoff, salinity runoff, salinity rainfall evap. rainfall evap. rainfall evap. wetland response environmental conditions

43. Integrated Modelling Framework groundwater response Regulator Decision Point shut open flow flow runoff, salinity rainfall evap. runoff, salinity runoff, salinity runoff, salinity rainfall evap. rainfall evap. rainfall evap. wetland response environmental conditions

45. Bayesian Network Modelling

46. Interaction Between Models Rainfall, Evaporation Current Conditions Groundwater Models Wetland Models Rainfall-Runoff Models Salt Transport Models Regulator Settings Catchment Routing Environmental Response Dryland Salinity Flooding Evaluate Option Simulation/Optimization

51. Wastewater Treatment Wetland ASR House or Cluster Mains water Stormwater Total Urban Water Management Industry

52. Optimum Design of Greywater Reuse Systems (Cluster Scale)

55. Case Study Scale 01 9 houses Scale 02 19 houses Scale 03 47 houses Scale 04 68 houses Scale 05 117 houses Scale 06 147 houses

58. Layout

61. Results

64. Sensitivity Analysis