The WEF Published Papers Awards recognize WEF members for valuable research that has the potential for broad contribution to industrial wastewater management.

Eddy Wastewater Principles/Processes Medal  

The Eddy Medal honors Harrison Prescott Eddy, a prominent engineer and a pioneer in the field of wastewater treatment. The medal is awarded for research that makes a vital contribution to the existing knowledge of the fundamental principles or process of wastewater treatment, as comprehensively described and published in a federation periodical.

"Performance evaluation of first full-scale primary filtration using a fine pore cloth media disk filter". Water Environment Research • 93: 94–111, 2021

Eddy Wastewater PrinciplesProcesses Medal-Onder Caliskaner1.jpg George Tchobanoglous.jpgLilly Imani.jpg Brian Davis.jpg  

Authors: Onder Caliskaner, George Tchobanoglous, Lilly Imani, and Brian Davis

Onder Caliskaner 
Onder Caliskaner is the president of Caliskaner Water Technologies and has 28 years of experience in technology research and development, project management, process engineering, planning and design of water resource recovery facilities (WRRF). His main engineering and research interests include primary filtration, carbon diversion, advanced primary treatment, tertiary filtration, water reuse, and process modeling. Dr. Caliskaner has been the principal investigator and project manager for several research and demonstration projects which led to fast-emerging technologies offering many significant benefits at WRRFs. He has a Ph.D. degree in Civil and Environmental Engineering from the University of California at Davis, an M.S. degree from the University of Illinois at Urbana-Champaign, and a B.S. degree from METU Technical University, Turkey. Onder is a registered civil engineer in California.  

Onder started his consulting career as a process engineer at CH2MHILL after completing his graduate studies in filtration technologies and process modeling. He then worked at Nolte Associates and Kennedy Jenks Consultants. In 2020, he started his firm: Caliskaner Water Technologies with one main objective -- to develop and demonstrate advanced technologies for achieving better treatment and hydraulic performances while decreasing energy consumption and capital costs. Caliskaner Water Technologies is currently conducting a comprehensive 3.5-year long technology demonstration and development project involving four advanced primary and three advanced secondary treatment technologies to help define feasible pathways for achieving net-zero WRRFs. 

Onder is an active member of multiple local and national professional associations including WEF, WateReuse and California Water Environment Association (CWEA).  Dr. Caliskaner has over 100 publications/presentations mainly in tertiary filtration, water reuse, primary filtration, carbon diversion, advanced primary treatment, and process modeling. He received an award from WEF in 2018 for best technical paper abstract regarding his work on carbon diversion / primary filtration. He was the principal investigator and project manager of the primary filtration project which was selected to receive the first place for California Water Environment Association’s Engineering and Research achievement award in 2019.

George Tchobanoglous 
For over 35 years, George Tchobanoglous taught courses on water and wastewater treatment and solid waste management at the University of California, Davis, where he is Professor Emeritus in the Department of Civil and Environmental Engineering.  Dr. Tchobanoglous’ research interests are in the areas of innovative water and wastewater treatment systems, potable water reuse, wastewater filtration, UV disinfection, aquatic wastewater management systems, decentralized wastewater management, and solid waste management systems.  He has authored or coauthored over 600 publications, including 23 textbooks and 8 reference books, and has given more than 625 presentations.  In 2004, he was inducted into the National Academy of Engineering.  He’s a member of the European Academy of Sciences and Arts and a corresponding member of the Academy of Athens.  He is a Past President of the Association of Environmental Engineers and Science Professors.  Among his many other honors, in 2003, he received the Clarke Prize; in 2005, he received an Honorary Doctor of Engineering degree from the Colorado School of Mines, in 2012 he was the first recipient of the AAEES and AEESP Excellence in Engineering Education Award, in 2017, he received an Honorary Doctor of Engineering degree form both The Aristotle University of Thessaloniki and The Technical University of Crete, Greece. In 2022, he was honored with the Lifetime Achievement Award” from WateReuse California. Dr. Tchobanoglous received a B.S. in Civil Engineering from the University of the Pacific, an M.S. in Sanitary Engineering from the University of California, Berkeley, and a Ph.D. in Environmental Engineering from Stanford University. He is a registered Civil Engineer in California. 

Lilly Imani 
Lilly Imani is an assistant engineer with Sacramento County Water Agency (SCWA) currently supporting various water supply and infrastructure projects in the Operations and Maintenance Engineering division. Prior to joining SCWA, Lilly worked in the private sector as a staff engineer for Caliskaner Water Technologies (CWT) and Kennedy Jenks (KJ).  

At CWT and KJ, Lilly’s work focused on full-, demonstration- and pilot-scale installations of advanced primary and secondary treatment technologies for wastewater treatment. Under the guidance of her mentor, Onder Caliskaner, and close collaboration with the municipal wastewater treatment plants and technology manufacturers, Lilly operated and maintained five different advanced technology pilot units. Lilly collected samples for third-party laboratory analysis (e.g., COD, TSS, ammonium, nitrate, and particle size), maintained continuous monitoring inline sensors and analyzers, prepared work orders, and developed standard operating procedures for the pilot units. Lilly performed data analysis to evaluate the performance of the advanced treatment technologies compared to conventional treatment. In her first project, Lilly worked on the evaluation of primary filtration (Aqua-Aerobic Systems full-scale cloth disc filter) and biofiltration (WesTech pilot-scale FlexFilter) to replace primary sedimentation in wastewater treatment. The project was sponsored by the California Energy Commission to quantify the energy savings potential of various advanced primary treatment technologies. At KJ, Lilly was the lead engineer for a tracer study that established a new disinfection baffling factor for a 5 MGD water treatment plant and provided engineering support for two urban water management plans, a wastewater effluent disposal study, a grit removal study, and an alternatives analysis report that compared four lining alternatives for water distribution piping.  

Lilly received her B.S. in Chemical Engineering and M.S. in Civil and Environmental Engineering from the University of California, Davis. For her thesis project, Lilly designed and operated four bench-scale biological filters intermittently fed with synthetic greywater to evaluate the effect of filter media type (non-woven fabric, pumice, sand, and biochar) on removal performance. Lilly monitored common water quality parameters and bacteria (E. coli, enterococci, and staphylococcus aureus) in influent and effluent samples. 

Brian Davis
Brian G Davis P.E., is currently the General Manager of the Linda County Water District, providing municipal water and sewer service to approximately 30,000 residents of Yuba County.  Prior to his current position he worked for 20 years with consulting engineering firms providing water and sewer related engineering services, including most recently 13 years at Kennedy/Jenks Consultants managing the firm’s Sacramento location.  Brian received his B.S. and M.S. degrees from Brigham Young University.


Gascoigne WWTP Operational Improvement Medal  

The Gascoigne Medal was established in recognition of George Bradley Gascoigne, a prominent consultant who exhibited a great deal of interest in the operation of wastewater treatment plants. The medal is awarded to the author(s) of an article which presents the solution of an important and complicated operational problem within a full-scale, operating wastewater treatment plant which is appropriately staffed.

“Weak-in Worked Out,” van Dommelen and Smith, Water Environment & Technology, Vol. 33, No. 6, (June, 2021), pg. 49

Gascoigne Wastewater Treatment Plant Medal-Jon van Dommelen.jpg Gascoigne Wastewater Treatment Plant Medal-Rob Smith.jpg

Authors: Jon van Dommelen and Rob Smith

Jon van Dommelen 
Jon has worked for Ohio EPA for nearly 28 years.  He spent the first 6 years reviewing detailed plans and issuing permits to install for new wastewater treatment plants and collections systems in the Division of Environmental and Financial Assistance.  He eventually transferred to the Division of Surface Water, joining the Compliance Assistance Unit. Five years ago, he returned to DEFA along with the CAU. He has worked in the CAU for a total of 22 years troubleshooting noncompliance at wastewater treatment plants ranging from 1500 gallon per day package plants up to 15 million gallon per day municipal systems.  In addition, Jon has trained operators of WWTPs in process control of activated sludge, microbiology, biological nutrient removal, among other topics related to wastewater treatment.  He has also presented at WEFTEC (3 times), at many OTCO and OWEA workshops, as well as for other regional, state, and local organizations. He has published articles pertaining to topics of interest to operators in the Buckeye Bulletin, a publication of the Ohio Water Environment Association and in the WEF publication WE&T. 

Jon graduated from Ohio State University with a Bachelor of Science in Civil Engineering and is a register Professional Engineer in the State of Ohio.  His wife tells people that no one should have as much fun at their job as Jon does. 

Rob Smith 
Rob is a Senior Process Engineer with Black & Veatch in Columbus, Ohio. He specializes in municipal wastewater treatment. He has a Ph.D. from the University of Cincinnati and BSCE and MSCE degrees from the University of Toledo. He is a Board Certified Environmental Engineer (BCEE). In his career, he has worked for a wastewater utility, an equipment vendor, and as a consultant. He also has held positions as adjunct faculty at the University of Cincinnati and as a short-course instructor at the University of Wisconsin-Madison. He joined his current employer in 2019 where he has supported upper Midwest clients with design and troubleshooting of wastewater treatment processes. Rob has won numerous awards including the Sigma Xi Grant-in-Aid, the University of Cincinnati Rindsberg Fellowship, and the College of Engineering Graduate Assistant Excellence in Teaching Award. In addition, he won the WEFTEC poster competition in 2004 and he was presented the Ohio WEA Crystal Crucible Award in recognition of significant and sustained contribution to the advancement of the wastewater laboratory profession in 2018. Rob is a member of Water Environment Federation, Ohio Water Environment Association, the American Water Works Association, the Ohio American Water Works Association, the International Water Association, and the American Academy of Environmental Engineers. 


McKee Groundwater Protection, Restoration or Sustainable Use Award  

McKee Groundwater Protection, Restoration, or Sustainable Use Award recognizes significant contributions to groundwater science or engineering research published in a WEF or WEF Member Association periodical. In honor of Dr. Jack McKee, the 1962-63 president of the Water Environment Federation, a founder of the consulting firm of Camp, Dresser and McKee, Inc., and a long-time professor at the California Institute of Technology.

Bioremediation of trichloroethylene-polluted groundwater using emulsified castor oil for slow carbon release and acidification control. Water Environment Research, e1673 (2021)


Authors: Wei-Ting Chen, Ku-Fan Chen, Rao Y. Surampalli, Tian C. Zhang, Jiun-Hau Ou, and Chih-Ming Kao

Wei-Ting Chen 
Wei-Ting “Johnson” Chen is a Ph. D. Candidate in the Institute of Environmental Engineering at National Sun Yat-Sen University(NSYSU), Taiwan. He received his BS degree in the Department of Environmental science and Engineering from National Pingtung University of Science and Technology in 2018. During his postgraduate years, he specialized in surveys of soil and groundwater contamination, the site remediation with an environmentally friendly approach, and water quality management and safety. He received many awards for excellent seminar papers from The Chinese Institute of Environmental Engineering, Taiwan. He has still been developing green and sustainable environmental remediation concepts under the leadership of Prof. Chih-Ming “Jimmy” Kao.  

Ku-Fan Chen 
Dr. Ku-Fan Chen earned a bachelor degree from the Department of Environmental Science, Tunghai University, Taiwan in 1999 and a Master’s degree from Institute of Environmental Engineering, National Sun Yat-sen University (NSYSU), Taiwan in 2001. In 2006, he graduated from the Institute of Environmental Engineering, NSYSU with a doctorate degree. He joined the Department of Civil Engineering, National Chi Nan University (NCNU) in August 2008. He is currently a Distinguished Professor and the Chair in the Department of Civil Engineering, NCNU. Dr. Chen received a National Science Council grant in May 2005 to be a visiting researcher in the Department of Civil and Environmental Engineering, Lehigh University, USA, for a year. In August 2015, he received funding from the Ministry of Science and Technology and worked as a visiting scholar for one year in the Department of Civil and Environmental Engineering, University of Delaware, USA. Prior to joining NCNU, he worked for the Apollo Technology Co., Ltd., Taiwan, a company devoted to soil and groundwater remediation, as a Deputy Project Manager. Dr. Chen’s research interests include soil and groundwater remediation, electrochemical advanced oxidation processes, wastewater treatment, agricultural residue recycling and reuse, water resource and watershed management, and noise assessment and control. He has authored more than 246 academic and technical publications, including 63 refereed (peer-reviewed) journal articles, 2 book chapters, and 7 patents.  

Rao Y. Surampalli 
Dr. Rao Y. Surampalli is President and Chief Executive Officer of the Global Institute for Energy, Environment and Sustainability. He was with the U.S. Environmental Protection Agency (USEPA) for 30 years and retired as an Engineer Director. He received his M.S. and Ph.D. degrees in Environmental Engineering from Oklahoma State and Iowa State Universities, respectively. He has conducted research on over fifty (50) environmental engineering topics; including on recovery and reuse of resource and energy; occurrence, fate/transport and removal of emerging contaminants (e.g., pharmaceuticals and endocrine disrupting chemicals) in the environment; water and wastewater treatment; solid and hazardous waste management; environmental toxicity and risk of nanomaterials; remediation of contaminated sites and groundwater; and climate change mitigation and adaptation. He is a Distinguished Visiting Professor in six universities and Honorary Professor in three other universities abroad. He is an Distinguished Alumnus and Hall Fame Inductee of both the Oklahoma State and Iowa State Universities; and is an elected Fellow of the American Association for the Advancement of Science, Member of the European Academy of Sciences and Arts, Member of the Russian Academy of Engineering, Fellow of the Water Environment Federation and International Water Association, and recognized as a Distinguished Member of the American Society of Civil Engineers. He also is Editor-in-Chief of the ASCE Journal of Hazardous and Toxic Waste, and Nanotechnology for Environmental Engineering (a Springer Nature Journal), and past Vice-Chair of Editorial Board of Water Environment Research Journal. He has authored over 800 technical publications; including 22 patents, 25 books, 171 book chapters, over 370 refereed journal articles, over 250 national and international conference presentations and proceedings, and presented over 160 plenary/keynote or invited presentations worldwide. He has received over 30 national awards/honors from various professional organizations: including the NSPE 22nd National Federal Engineer of the Year; ASCE Simon-Freese Environmental Prize, Hering Medal, Horner and Greely Medals, and the State of the-Art-of-Civil Engineering Award and the Life-Time Achievement Award; WEF Eddy, Camp, McKee, and Emerson Medals; AAES Palladium Medal; AAEES Gordon Maskew Fair Award, Grand Prize for University Research and Kappe Lecturer Award.  

Tian C. Zhang 
Dr. Tian C. Zhang, P.E., D.WRE, BCEE, EASA, F.AAAS, Dist.M.ASCE is a Professor in the Department of Civil & Environmental Engineering at the University of Nebraska-Lincoln (UNL), USA. He received a B.S. degree in Civil Engineering from Wuhan University of Technology, P.R.C. in 1982, an M.S. degree in Environmental Engineering from Tsinghua University, P.R.C. in 1985, and a Ph.D. in environmental engineering from the University of Cincinnati in 1994. He joined the UNL faculty in August 1994. Professor Zhang teaches courses related to water/wastewater treatment, remediation of hazardous wastes, and non-point pollution control. Professor Zhang’s research involves fundamentals and applications of nanotechnology and conventional technology for water, wastewater, and stormwater treatment and management, remediation of contaminated environments, and detection/control of emerging contaminants in the environment. Professor Zhang has published more than 220 peer-reviewed journal papers (h-index = 50, citation > 9000), 90 book chapters and 18 books since 1994. Professor Zhang is a member of the Water Environmental Federation (WEF), and Association of Environmental Engineering and Science Professors (AEESP). Professor Zhang is a Diplomate of Water Resources Engineer (D.WRE) of the American Academy of Water Resources Engineers, Board Certified Environmental Engineers (BCEE) of the American Academy of Environmental Engineers, Fellow of American Association for the Advancement of Science (F.AAAS), Academician of European Academy of Sciences and Arts, and Distinguished Member of American Society of Civil Engineers (Dist.M.ASCE). Professor Zhang is the Associate Editor of Journal of Environmental Engineering (since 2007), Journal of Hazardous, Toxic, and Radioactive Waste (since 2006), and a member of the editorial board of Water Environment Research (since 2018). He has been a registered professional engineer in Nebraska, USA since 2000. 

Jiun-Hau Ou 
Dr. Jiun-Hau Ou is postdoctoral fellow in the Institute of Environmental Engineering at National Sun Yat-Sen University, Taiwan. is also an adjunct lecturer at R. O. C. Military Academy. Dr. Ou received his Ph.D. degrees in the Institute of Environmental Engineering at National Sun Yat-Sen University at 2021. He has a number of environmental protection professional certificates and academic honors. Dr. Ou has expertise in contaminated land restoration, soil and groundwater remediation, development of environmentally friendly materials, and watershed management...etc. 

Chih-Ming Kao 
Prof. Chih-Ming (Jimmy) Kao is a distinguished chair professor and director in the Institute of Environmental Engineering at National Sun Yat-Sen University, Taiwan. He was the former Coordinator of Environmental Engineering Program at Ministry of Science and Technology, former President of the Chinese Institute of Environmental Engineering, and former President of the Taiwan Association of Soil and Groundwater Environmental Protection. He received his MS and Ph.D. degrees in Civil and Environmental Engineering from North Carolina State University in 1989 and 1993, respectively. Prof. Kao has more than 30 years of experiences as a researcher and environmental engineer in contaminated land restoration, soil and groundwater remediation, constructed wetland design/operation, wastewater treatment and reuse, watershed management, contaminated site characterization, sustainable development, and risk assessment.  


Rudolfs Industrial Waste Management Medal

The Rudolfs Medal was established in 1949 and is named after Willem Rudolfs, an active WEF member and primary force in industrial waste research. This award recognizes noteworthy accomplishments in any aspect of industrial waste management research published in WEF or WEF Member Association periodicals.

Does Bioaugmentation of Aerated Stabilization Basins Work? Lessons from Field Scale Trials with a Control, 2021 WEFTEC Proceedings

Rudolfs Industrial Waste Management Medal-Amanda Johansen Mattingly1.jpg Rudolfs Industrial Waste Management Medal-Francis de los Reyes.jpg

Authors: Amanda Johansen Mattingly and Francis Lajara de los Reyes III

Amanda Johansen Mattingly 
Amanda is a Senior Research Engineer at the National Council for Air and Stream Improvement, Inc (NCASI), where she spends her time on pulp and paper industry water resource research and providing wastewater treatment support to pulp and paper mills. She started off her career in municipal consulting, where she found her passion for wastewater treatment process modeling, design and analysis. She gained more experience in biological process modeling as a research engineer for NCASI for a couple years before deciding to go back to school. At North Carolina State University, she joined Dr. Francis de los Reyes’ lab and completed a thesis project under his direction studying the effectiveness of bioaugmentation at a full-scale wastewater treatment plant. In her free time, she loves to be outside (hiking, skiing, bird watching) as well as spend time with her family and friends (particularly her husband Pete and 1-year old son Elliott). 

Francis Lajara de los Reyes III 
Francis L. de los Reyes III, Ph.D., BCEEM, WEF Fellow, TED Fellow 

Profile ( 

Dr. Francis de los Reyes is the Glenn E. and Phyllis J. Futrell Distinguished Professor of Civil, Construction, and Environmental Engineering and Alumni Distinguished Undergraduate Professor at North Carolina State University.  He is also Faculty in Microbiology and Biotechnology, and a University Faculty Scholar. He teaches undergraduate and graduate classes on wastewater treatment plant design, environmental biotechnology and microbiology, fundamentals of environmental engineering, and water and sanitation for developing countries. He is a TED Fellow, a WEF (Water Environment Federation) Fellow, and Board Certified Environmental Engineer by Eminence by the American Academy of Environmental Engineers and Scientists. 

Dr. de los Reyes' research focuses on biological processes and combines modeling, bioreactor experiments, and molecular microbial ecology tools in addressing fundamental and practical issues in environmental biotechnology and environmental engineering. Another research focus is sanitation in developing countries, where improving the technologies along the entire sanitation chain is the main focus.  

He has been a consultant for industry, engineering firms, and public utilities in the US and the Philippines. He has also worked in water and sanitation issues in developing countries, and has collaborations in the Philippines, India, China, South Africa, Pakistan, Ghana, and Malawi.  

His awards include: the Gordon Fair Award in Environmental Engineering Education (WEF), Outstanding Teacher, Outstanding Extension, and Global Outreach Awards from NC State, Balik-Scientist award of the Philippine Government; the US National Science Foundation CAREER Award, the Steven Dentel Award for Global Outreach from AEESP (Association of Environmental Engineering Science Professors), and the AAEES (American Academy of Environmental Engineering and Science) Research Honor Award. His group’s pit emptying technology (Flexcrevator and Excluder) has won the RELX Group Environmental Challenge Award, and in 2020 received the US Patents for Humanity Award. Dr. de los Reyes is a Past President and Board Chair of the Philippine-American Academy of Scientists and Engineers. In 2020, he was named Corresponding Member of the National Academy of Science and Technology of the Philippines. 

He received his BS in Agricultural Engineering (magna cum laude) from the University of the Philippines-Los Banos in 1990, MS in Civil Engineering from Iowa State University in 1994, and PhD in Environmental Engineering from the University of Illinois at Urbana-Champaign in 2000.