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Dynamic Process Modeling and Simulation

Dynamic Process Modeling and Simulation. 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

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Dynamic Process Modeling and Simulation

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  1. 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. Products BioWin

  4. BioWin • 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. 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. Professional Services Model Calibration, Process Design,

  10. Professional Services • Consulting • Collaborative – teaming • Our methodologies and calibration expertise • Wastewater Characterization • Key for calibration • EnviroSim’sresearch & 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. Applying BioWin Reducing Operating Costs

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

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

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

  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 Projected Red’n Proposed Control

  20. BioWin Application – Operating Cost Savings • Conclusions and benefits… Annual Cost Savings: $NZ 399,000 (@ $0.083 / kWh) 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 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

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

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