Publications and Presentations

Author of over 60 book chapters, peer-reviewed publications and conference presentations:

1) Samstag, R.W. (1988) On-Site Disposal of Secondary Effluent and Sludge at Forks, Washington. Paper presented at the Pacific Northwest Pollution Control Association Annual Conference.
2) Samstag R.W., Lester, A. and Thatcher, F. (1988) Integrated Design of Wastewater Treatment Plants. Proceedings of the 72nd American Society of Civil Engineers Conference, Vancouver, British Columbia.
3) Samstag, R. W., Dittmar, D. F. and Vitasovic, Z. (1988) Studies in Activated Sludge Sedimentation. Proceedings of the American Society of Civil Engineers Civil Engineering and Environmental Engineering, Special Conference 39; Vancouver, British Columbia.
4) Samstag, Randal W., Andrew Z. Lester, Frederick C. Thatcher (1989) Automated Design of Wastewater Treatment Plants, Civil Engineering.
5) McCorquodale, J.A., Yuen, E.M., Vitasovic, Z., and Samstag, R.W. (1991) Numerical Simulation of Unsteady Conditions in Clarifiers, Water Pollution Resources, J. Canada; Volume 26, No. 2, p. 201-222.
6) Samstag, R. W.; Dittmar, D. F.; Vitasovic, Z.; McCorquodale, J. A. (1992) Underflow Geometry in Secondary Sedimentation, Water Environ. Res., 64, 204–212.
7) Samstag, R.W., McCorquodale, J. A., and Zhou, S. P. (1992) Prospects for transport modeling of process tanks, Water Science Technology, Vol. 26, No. 5-6, pp. 1401-1410,.
8) Samstag, R.W. and Bolinger, A. (1994) Validation of Clarifier Process Models for Activated Sludge Sedimentation, presented at the Pacific Northwest Pollution Control Association Conference.
9) Samstag, R.W. (1994) Computer Simulation for Process Control and Operator Training. Paper presented at the Water and Wastewater Operators (WOW) Conference, Tacoma, WA.
10) Samstag, R.W. and Gharagozian, A. (1998) Appropriate Technology for Sewage Pollution Control in the Wider Caribbean Region. Proceedings of the 7th Annual Caribbean Water and Wastewater Association Conference, Antigua, 1998.
11) Samstag, R.W. (1999) The Cyclic Feed Aeration Wastewater Treatment Process. Paper presented at the Pacific Northwest Pollution Control Association Conference.
12) Liao, Dr. Paul B. and Samstag, R.W. (1999) The Cyclic Feed Aeration Wastewater Treatment Process. Paper presented at the 6th Mainland-Taiwan Environmental Protection Conference.
13) Samstag, Randal, Andre Gharagozian, Gil Bridges (2000) Simulation and Verification of a Cyclic Aeration Control System, Proceedings of the 73rd Annual Water Environment Federation Technical Conference & Exposition.
14) Samstag, R.W. (2000) Simulation and Automated Control of Cyclic Aeration for Nitrogen Removal and Energy Savings. Paper presented at the 67th Annual Conference of the Pacific Northwest Pollution Control Association, Coeur d’Alene, ID.
15) Samstag, Randal, Andre Gharagozian, Gil Bridges (2001) Full-scale Test and Simulation of Simultaneous Nitrification and Denitrification, Proceedings of the 74th Annual Water Environment Federation Technical Conference & Exposition.
16) Samstag, R.W. (2001) Simultaneous Nitrification and Denitrification. Paper presented at the 68th Annual Conference of the Pacific Northwest Pollution Control Association, Hood River, OR..
17) Samstag, R.W. (2002) What Can You Learn from a Failed Selector? Paper presented at the 69th Annual Conference of the Pacific Northwest Clean Water Association, Yakima, WA.
18) Samstag, R.W. (2003) Activated Sludge Modeling, presented at the Pacific Northwest Clean Water Association Western Washington Regional Short School & Trade Show.
19) Samstag, R.W., Butler, R., and Hammond, R. (2003) Factors Influencing Selector Success and Failure, Proceedings of the Water Environment Federation 76th Annual Technical Conference & Exposition, Los Angeles, CA.
20) Hagstrom, J.P., Narayanan, B., Samstag, R.W., Payauys, A., Bucher, B., Smith, J., and Sukapanpotharam, P., A (2003) Modified Design and Operational Approach for Membrane Bioreactors, Proceedings of the Water Environment Federation 76th Annual Technical Conference & Exposition, Los Angeles, CA.
21) Samstag, R.W., Nelson, C., Steinke, C. (2004) Evaluation of Strategies for Aeration Control, Water Environment Federation, Proceedings of the 77th Annual Technical Exhibition and Conference, New Orleans, Louisiana USA.
22) Samstag, R. W., Nelson, C., Steinke, C. (2004) Evaluation of Aeration System Control, Pacific Northwest Clean Water Association, Annual Conference, Seaside, Oregon.
23) R. W. Samstag, B. Narayanan, J. Hagstrom, T. G. Bridges, and A. Bahl (2005) Hydraulic Characteristics Of Activated Sludge Aeration Tanks, Proceedings of the Water Environment Federation, Seventy-Eighth Annual Technical Exhibition And Conference, Washington, D.C.
24) Erik Johannessen, Randal W. Samstag, H. David Stensel (2006) Effect of Process Configurations and Alum Addition on EBPR in Membrane Bioreactors, Water Environment Federation, Proceedings of the 79th Annual Technical Exhibition and Conference, Dallas, Texas.
25) B. Narayanan and R. Samstag (2006) Impact of Solids Treatment Recycle Streams on BNR System Performance, Pre-conference Workshop, Pacific Northwest Clean Water Association, Annual Conference and Exposition, Coeur d’Alene, ID.
26) Rod Reardon, Graham Juby, Randal Samstag (2007) Satellite Reclamation Plants – Membranes vs. Granular Media Filtration, Water Reuse Association Journal.
27) Randal Samstag (2007) Control of Activated Sludge Settleability, presentation at the Pacific Northwest Clean Water Association, Annual Conference, Vancouver Washington.
28) Randal Samstag, James Hagstrom, B. Narayanan, Larry Bateman and Geoff Smyth (2007)Energy Savings and Settleability Control for Bellingham’s HPO Process, presentation at the Pacific Northwest Clean Water Association, Annual Conference, Vancouver Washington.
29) Randal W. Samstag (2008) Causes and Control of Activated Sludge Settleability Problems, Water and Wastewater Operators Annual Conference, Ocean Shores, WA.
30) Rod Reardon, Randal Samstag and Sudhan Paranjape (2009) Sustainable Design Concepts for BNR and ENR, WEF Nutrient Removal 2009 – Workshop B, Washington DC.
31) Edward A. Wicklein and Randal W. Samstag  (2009) Comparing Commercial and Transport CFD Models for Secondary Sedimentation, Water Environment Federation, Proceedings of the 81st Annual Technical Exhibition and Conference, Orlando, FL.
32) Lydia Holmes, Rod Reardon, Sarah Deslauriers, Sean Poust, and Randal Samstag (2006) Incorporating Sustainability Considerations into Process Selection for Biological Nutrient Removal, Water Environment Federation, Proceedings of the 81st Annual Technical Exhibition and Conference, Orlando, FL.
33) Randal W. Samstag, Michael K. Stenstrom, Larry A. Bateman (2009) Upgrade of a High Purity Oxygen Plant for Improved Energy Efficiency and Process Control, Water Environment Federation, Proceedings of the 81st Annual Technical Exhibition and Conference, Orlando, FL.
34) Randal W. Samstag, Michelle Evans, Larry A. Bateman, Brian R. Matson (2009) Using Simulation to Predict Bulking Caused by Dynamic Process Loading, Water Environment Federation, Proceedings of the 81st Annual Technical Exhibition and Conference, Orlando, FL.
35) Randal Samstag and Alonso Griborio (2010) Calibration and validation of CFD Models – Case Study: CFD Modelling of Secondary Clarifiers, presentation at the 2nd IWA/WEF Wastewater Treatment Modeling Seminar, Mont-Sainte-Anne, Quebec, Canada.
36) Randal Samstag (2010) Process Modeling in Chapter 2, Water Environment Federation, Manual of Practice 33, Information Technology in Water and Wastewater Facilities, WEF MoP No. 33.
37) Randal W. Samstag and Alonso Griborio (2010) Available Clarifier Models – Setting up a CFD Model – Calibration Procedures – Data Needed , WEFTEC Workshop 116 – Combining the Power of Whole-Plant Simulators and CFD for the Dynamic Modeling of WWTP, Proceedings of the Water Environment Federation 82nd Annual Technical Conference & Exposition, New Orleans, LA.
38) Randal W. Samstag, Siping Zhou, Rick L. Chan, Cynthia Royer, Kevin Brown, (2010) Comprehensive Evaluation of Secondary Sedimentation Performance, Proceedings of the Water Environment Federation 82nd Annual Technical Conference & Exposition, New Orleans, LA.
39) Randal W. Samstag (2011) Aeration, presentation at the Puget Sound Section of the Pacific Northwest Clean Water Association meeting, Sumner, WA.
40) Randal W. Samstag (2011) SRT Control, presentation at the Puget Sound Section of the Pacific Northwest Clean Water Association meeting, Sumner, WA.
41) Ron Moeller, Richard Finger, Randal Samstag, Edward Wicklein (2011) Optimizing the Performance and Capacity of Your Secondary Clarifier, PNCWA Plant Operations and Maintenance Committee, Pre-Conference Workshop.
42) Richard Finger and Randal Samstag (2011) Strategies for Wet Weather Control, PNCWA Puget Sound Section Meeting, Chambers Creek Regional Wastewater Treatment Plant.
43) Randal Samstag (2011) The Future of Wastewater Treatment, presentation at Oregon Operator’s Training Short School.
44) R. Samstag and E. Wicklein (2012) Application of CFD to Activated Sludge Mixing Analysis, presentation to the 3rd IWA/WEF Wastewater Treatment Modelling Seminar, Mont-Sainte-Anne QC, Canada.
45) Rod Reardon, Sudhan Paranjape, and Randal W. Samstag (2012) A Re-Evaluation of the Economics of the MBR Process – Has a Tipping Point Been Reached?, presentation to the Joint AMTA – WEF Technology Transfer Workshop, MBR/MF/UF Membrane Treatment in the Pacific Northwest, SeaTac, WA.
46) R.W. Samstag, E A Wicklein, B. Lee (2012), Computational Analysis of Activated Sludge Lamella Sedimentation, poster at the International Water Association, Biennial Conference, Seoul, Korea.
47) Randal W. Samstag, Edward A. Wicklein, Roderick D. Reardon, Robert J. Leetch, R. (Robbie) M. Parks, and Colin D. Groff (2012) Field and CFD Analysis of Jet Aeration and Mixing, Proceedings of the Water Environment Federation 84th Annual Technical Conference Exposition, New Orleans, LA.
48) Randal W. Samstag and Ed Wicklein (2012) Improving WWTP Design and Operations Through 3D CFD Modeling, Pacific Northwest Clean Water Association, Annual Conference and Exposition.
49) Randal W. Samstag (2013) CFD for Wastewater: Algorithms and Computations, Pre-conference Workshop, Water Environment Federation 85th Annual Technical Conference & Exposition, Chicago, IL.
50) Randal W. Samstag and Alonso G. Griborio (2013) CFD for Wastewater: Sedimentation, Pre-conference Workshop, Water Environment Federation 85th Annual Technical Conference & Exposition, Chicago, IL.
51) Edward A. Wicklein and Randal W. Samstag (2013) CFD for Wastewater: Activated Sludge Mixing Systems, Pre-conference Workshop, Water Environment Federation 85th Annual Technical Conference & Exposition, Chicago, IL.
52) R. W. Samstag and E.A. Wicklein (2014) A Protocol for Optimization of Activated Sludge Mixing, Proceedings of the 4th IWA/WEF Wastewater Treatment Modelling Seminar, Spa , Belgium.
53) J. Laurent, R.W. Samstag, J.M. Ducoste, A. Griborio, I. Nopens, D.J. Batstone, J.D. Wicks, S. Saunders, O. Potier (2014) A protocol for the use of Computational Fluid Dynamics as a supportive tool for wastewater treatment plant modeling. Proceedings of the 4th IWA/WEF Wastewater Treatment Modelling Seminar, Spa , Belgium.
54) Sudhan Paranjape, Randal Samstag, Rod Reardon, Erica Stone, Larry Tunnell, Alan Gay, John Haak, Tim Madhanagopal, Tom Tompkins (2014) Side by side testing of vertical shaft driven mixers for activated sludge treatment, Proceedings of the Florida Water Resources Conference.
55) Randal W. Samstag and Edward A. Wicklein (2014) A Protocol for Optimization of Activated Sludge Mixing, Proceedings of the Water Environment Federation WEFTEC Conference, New Orleans, LA.
56) Edward A. Wicklein and Randal W. Samstag (2014) Optimization of Rectangular Secondary Sedimentation Basins Using Computational Fluid Dynamic (CFD) Modeling, Proceedings of the Water Environment Federation WEFTEC Conference, New Orleans, LA
57) J. Laurent, R. W. Samstag, J. M. Ducoste, A. Griborio, I. Nopens, D. J. Batstone, J. D. Wicks, S. Saunders and O. Potier (2014) A protocol for the use of computational fluid dynamics as a supportive tool for wastewater treatment plant modelling, Water Science & Technology, Vol 70, No 10, pp 1575–1584.
58) Randal Samstag (2015) Chapter 8 – Conclusions, The Nutrient Roadmap, Water Environment Federation.
59) Randal Samstag (2015) CFD for Wastewater Fundmentals, Workshop presentation, Watermatex 2015, Queensland, Australia.
60) Randal Samstag, Ed Wicklein, Stephen Saunders and Joel Ducoste (2015) CFD for Wastewater Case Studies: Sedimentation, Mixing and Disinfection , Workshop presentation, Watermatex 2015, Queensland, Australia.
61) Edward Wicklein, Damien J. Batstone, Joel Ducoste, Julien Laurent, Alonso Griborio, Jim Wicks, Stephen Saunders, Randal Samstag, Oliver Potier and Ingmar Nopens (2015) Good Modelling Practice in Applying Computational Fluid Dynamics for WWTP Modelling, Water Science and Technology, .
62) Coenraad Pretorius, Ed Wicklein, Tanja Rauch-Williams, Randal Samstag, Cole Sigmon (2015) How Oversized Mixers Became an Industry Standard, Proceedings of the Water Environment Federation, WEFTEC 2015: Session 420 through Session 429, pp. 4379-4411(33).
63) R. W. Samstag, J. J. Ducoste, A. Griborio, I. Nopens, D. J. Batstone, J. D. Wicks, S. Saunders, E. A. Wicklein, G. Kenny, J. Laurent (2016) , CFD for wastewater treatment: an overview, Water Science and Technology, May,
64) Randal W. Samstag (2016) CFD for WRRF Fundamentals, WEFTEC 2016, Workshop Presentation, W20 Computational Fluid Dynamics: Hands-On CFD Modeling for Water Resource Recovery Facilities.
65) Randal W. Samstag and Edward S. Wicklein (2016) CFD for WRRF Mixing Applications, WEFTEC 2016, Workshop Presentation, W20 Computational Fluid Dynamics: Hands-On CFD Modeling for Water Resource Recovery Facilities.
66) Randal W.Samstag (2016) CFD for Wastewater Sedimentation Examples, WEFTEC 2016, Workshop Presentation, W20 Computational Fluid Dynamics: Hands-On CFD Modeling for Water Resource Recovery Facilities.
67) I. Nopens, R. Samstag, J. Wicks, J. Laurant, U. Rehman and O. Potier (2017) “To Mix, or Not to Mix, That Is the Question,” in Giorgio Mannina, Editor, Frontiers in Wastewater Treatment and Modelling, Springer, Lecture Notes in Civil Engineering.

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