1. BioWin3 ® – An Introduction Michael D. Doran, P. E. DEE Adjunct Professor of Civil & Environmental Engineering CEE 426

2. Presentation Outline What is BioWin3 ® ? What can BioWin3 ® be used for? How does BioWin3 ® work? Some Examples Cautions Using BioWin3 ® Class Exercise

3. BioWin3 ® is Powerful WWTP Process Simulation Software BioWin3 ® is microcomputer-based wastewater treatment plant process software that allows integrated steady state or dynamic unit process simulations. According to EnviroSim Associates, Ltd., BioWin3 ® is the world-wide leader in WWTP simulator software.

4. BioWin3 ® Is Useful for: Integrated “Mass Balance” Approach, Including Sidestream Impacts Preliminary Analysis of Various Processes for Planning Purposes Detailed Analysis of Unit Process Sizing and Configuration during Design Analysis of Diurnal Loads, Peak Wet Weather, Solids Processing, etc., on Treatment Performance Evaluating SRT, Temperature, Other Factors Estimating Raw Solids Generation, Biosolids Process Loadings, Stabilized Biosolids Generation

5. BioWin3 ® Includes Robust Models IAWQ Extended (for BNR) Activated Sludge Fermentation Poly P Organisms Anaerobic Autotrophic (methane formers) Clarifier Hindered Settling-Thickening Clarifier Biological Activity Oxygen Transfer e.g.

6. Model Documentation can be Found in Literature General Model for Biological Nutrient Removal Activated Sludge Systems: Model Presentation, P.S. Barker and P.L. Dold, Water Environment Research, vol. 59, no. 5. 1997, p. 969. General Model for Biological Nutrient Removal Activated Sludge Systems: Model Application, P.S. Barker and P.L. Dold, Water Environment Research, vol. 59, no. 5. 1997, p. 985. COD and Nitrogen Mass Balances in Activated Sludge Systems, P.S. Barker and P.L. Dold, Water Research, vol. 29, no. 2, 1995, p. 633. An Introduction to Process Modeling for Designers, Water Environment Federation MOP 31, 2009. e.g.

7. BioWin3® Uses an Effective Human Interface Interface Modeling Engine Simulator Output Management Graphs Tables Configuration Kinetic Parameters Influent Characteristics Performance Factors

8. The Configuration Screen is Used to Describe the Modeled System

9. BioWin3® Simulation Configured From Elements Influent Element Clarifier Elements Reactor Elements Effluent Elements Mixer Element Anaerobic Digester Element Splitter Element Primary Clarifier Element Pipe Element (typ)

10. BioWin3 ® Contains Useful Controls and Tools SRT Wasting Control For Act Sldg Can Consider (or not) Clarifier Sludge Blanket, Non-Aerated MLSS, etc., in Biomass Inventory for F/M or SRT Global Temperature (or can be set “locally”) Simulation (Monitoring) and Tabular or Graphical Output Formats; Export Utility “Point and See” Information Documentation Output Report to “WORD” or PDF

11. Simulations Can Be Simple

12. Simulations Can Be Complex

13. Example – How Does the Model Predict Real Plant Performance? Beloit WI WWTP Activated Sludge System ~3.0 hr HRT ~23 hr HRT ~ 8 d SRT

14. Example – 2008 Monthly Avg Beloit Data Used

15. Example – BioWin3 Model Predicts Beloit Effluent Pretty Well Default BioWin3 Coefficients Used for Model.

16. Example – BioWin3 Model Predicts Beloit Effluent Pretty Well Default BioWin3 Coefficients Used for Model.

17. Example – BioWin3 Model Predicts Beloit Effluent Pretty Well Default BioWIn3 Coefficients Used for Model.

18. Example – BioWin3 Model Predicts Beloit Effluent Pretty Well Default BioWin3 Coefficients Used for Model.

19. Example 2 – Final Clarifier Performance vs. Loading Rate Variable Infl Flowrate 500 gpd/sq ft 800 gpd/sq ft 1,000 gpd/sq ft 1,200 gpd/sq ft Average OFR Values:

20. Example 2 – Flow Input of Typical Diurnal Pattern Used

21. Example 2 - TSS from Clarifiers

22. Example 2 - Effluent TSS Deteriorates at OFR above ~1,000 gpd/sq ft

23. Sludge Blanket “Blooms” at SLR above ~26 lb/d/sq ft

24. Close-up of Blanket Height Output from Simulation

25. Example 3 – Plant Mass Balance Recycle Quantities (% of Infl): Q=8.4% CBOD=5.6% TSS=18.3% TKN=19.2% TP=121%

26. Simulator Can Help Answer Key Design Questions What process, reactor sizings, recycle rates, etc. are best for my application? What Raw Sludge Loading to digestion can I expect During Peak Week and Peak Month Conditions? What Aeration Capacity is needed for Peak Conditions? What is the best Aeration tapering scheme? What SRT is best for different seasonal conditions? What impact do Sidestreams have on performance of other units? How does my proposed design respond to seasonal temperature variations, diurnal and peak loadings? How does the proposed design handle wet weather I/I inputs from severe storms? etc., etc., etc.

27. BioWin3 ® Should Be Used with Care Study Workbooks and Do Tutorial Examples. Carefully Complete All Input Screens for Element Properties. Think About Information Needed; Construct Graphs or Tables in “Album” for Desired Output. Simulate Critical Cases (e.g., Peak Hr, Peak Day, Peak Week, Critical Temperatures). Keep Log of “Runs” and Save Files with Logical Name. Ask Questions – I Have Found EnviroSim Staff to Be Very Helpful! Default Model Parameters have been Carefully Researched by EnviroSim (for domestic wastewater), but May Not Apply to Your Case; Use Careful and Conservative Approach to Planning and Design; Calibrate model to specific wasteswater if necessary.

28. Questions-Discussion

29. Let’s Build This Simple Simulation