1. McMaster Innovation Park 114A-175 Longwood Road South Hamilton, ON L8P 0A1 Canada www.envirosim.com info@envirosim.com Brazil Water and Wastewater Mission to Ontario Dynamic Process Modeling and Simulation

2. Who are we? EnviroSim Activities Products - development & worldwide sales BioWin – municipal wastewater modeling and simulation PetWin+ – petrochemical effluent modeling and simulation BW Controller People Development BioWin and PetWin+ Training Workshops & Seminars Professional Services Model Based Consulting Wastewater Characterization and Kinetic Studies

3. December, 2012 Products BioWin

4. Wastewater Process Simulator

5. Interface Clear and easy to use…

6. BioWin Features Ease of Use Always developed as a Windows application Does not require multiple steps to build a simulation Does not require add-ons Shorter learning curve Report generation (in MS Word) Data to Excel Support Strong technical backup Tried and tested Used by most consultants around the world

7. December, 2012 People Development Courses

8. People Development Comprehensive range of courses & workshops BioWin Introductory training BioWin Advanced training Calibration course Custom courses Knowledge transfer workshops Data requirements and analysis Plant model calibration and verification Plant model application: “what if” (scenario) analysis

9. December, 2012 Professional Services Model Calibration, Process Design,

10. Professional Services Consulting  Collaborative – teaming  Our methodologies and calibration expertise Wastewater Characterization  Key for calibration  EnviroSim’s research & experience ensures that our calibrated wastewater treatment models are truly predictive Field Experimental Services  Effective quantification of real world variables  Experienced experts and proven sampling & analysis programs ensure that influent wastewater characteristics and nitrification kinetics are effectively captured. North Shore WWTP Auckland, New Zealand Chelmsford WWTP Ontario, Canada Czajka WWTP Warsaw, Poland Metropolitan WWTP Minneapolis, U.S.A. Christies Beach WWTP, Adelaide, Australia Shek Wu Hui STW, DSD, Hong Kong

11. December, 2012 Applying BioWin Reducing Operating Costs

12. BioWin Application – Operating Cost Savings The situation… Reactor / Clarifiers Recently upgraded nutrient removal process Auckland, NZ Design: 103 mgd (mean daily flow)

13. BioWin Application – Operating Cost Savings The situation… Meets Current Final Effluent Requirements Total N: 9.5 mg/L BOD: 15 mg/L Aeration Control Strategy Single airflow control valve for each R/C Position controlled by any one of four DO probes in aerated zones

14. BioWin Application – Operating Cost Savings The situation… DO in aerated zones highly variable Aeration power costs $NZ 1.7M annually Explore cost saving potential of improved DO control strategies AND

15. BioWin Application – Operating Cost Savings The approach… Model Configuration in BioWin

16. BioWin Application – Operating Cost Savings The approach… Plant-wide intensive sampling campaign to supplement historical data

17. BioWin Application – Operating Cost Savings The approach… Dynamic model predicted versus observed operational data…

18. BioWin Application – Operating Cost Savings The application… Compare Improved and Existing DO Control Strategy Methodology: Selected an “average week” Synthesized diurnal “reactor feed” profile Entered actual observed DO data Model calculated airflow rates Calculated power consumption from airflow Compared cumulative power consumption

19. BioWin Application – Operating Cost Savings The application… Compare Improved and Existing DO Control Strategy Methodology: Compared cumulative power consumption Generated cumulative power trend over one week Proposed control strategy improvements indicated significant potential power reduction Current Control Proposed Control Projected Red’n

20. BioWin Application – Operating Cost Savings Conclusions and benefits… Annual Cost Savings: $NZ 399,000 (@ $0.083 / kWh) Conclusions BioWin simulation can be used effectively as a test of the economic benefits of different aeration control strategies BioWin simulation is particularly appropriate for complex aeration systems where implementation is relatively costly Significant cost savings can be made by improving aeration control Benefits Cost saving NZ$399,000 per year (at $0.083/kWh) Reduction in air consumption by @ 20% Reduction in blower power consumption by @13,000 kWh/d (8% of total power) Return on investment Immediate Cash Saving Improved Process & Stability

21. Thank You… Richard Jones jones@envirosim.com www.envirosim.com In South America: Daniel A. Nolasco NOLASCO & Assoc. Inc. daniel@nolasco.ca