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2016 IUVA World Congress


The IUVA World Congress on Ultraviolet Technologies was held from Jan. 31 to Feb. 3 in Vancouver, Canada. A turnout of 269 delegates from 25 countries attended the event along with 21 exhibitors. The banquet on Tuesday evening was a special highlight, including the announcement of IUVA awards. Proceedings from the IUVA World Congress are available to all delegates, and pricing will be set so papers are available to non-delegates.

Pre-Congress Workshop Draws 50-Plus Attendees

“Proposed Changes in International Regulations and Their Potential Impacts on Disinfection Practices” took place on the Sunday before the World Congress. It was well attended with more than 50 participants and included presentations from Keith Bircher, Regina Sommer, Kati Bell and Andy Salveson. These presentations will appear as full articles in IUVA News in the summer 2016 issue.

Kati Bell Takes Over as IUVA President; Oliver Lawal Chosen as President Elect

At the IUVA General Assembly, Dr. Kati Bell of MWH Global was installed as IUVA’s president, taking over from Karl Linden, who will become past president.

Dr. Bell is the water reuse global practice leader for MWH. She has over 20 years of experience in selection, design, implementation and optimization of water treatment process. Disinfection and advanced oxidation processes are key focus areas for Bell. Bell also led the recently published IUVA/WEF special publication for UV disinfection of wastewater. As a researcher, she was recently appointed to the Johns Hopkins Bloomberg School of Public Health.

It was also announced that Oliver Lawal has been elected as the president elect. Lawal will take over as president in late 2017.

Lawal has been involved with UV technology since the late 1990s. As the founder of AquiSense Technologies, he is able to execute his passion for chemical-free water treatment using UV-C LEDs. He previously served as president of Aquionics Inc., a leading UV water treatment supplier using conventional mercury-vapor lamps.

Lawal holds two engineering degrees from Manchester University in the United Kingdom. He has enjoyed serving on the board of directors of the International Ultraviolet Association as treasurer and as an active member of several committees. He also has served on the Board of Confluence, an Ohio Valley water innovation cluster and the Water and Wastewater Equipment Manufacturers Association (WWEMA). He has been widely published on UV topics, named in various global patents and is considered one of the thought leaders in the practical application of UV-LEDs for water treatment.

IUVA Board, Executive Committee Elected

The IUVA Membership elected the following to the IUVA Board of Directors. Members of the Executive Committee are noted.

Volker AdamGermanyHeraeus Noblelight
Scott AlpertUSAHazen and Sawyer
Jamal AwadUSAHR Green
Kati BellUSA (President)MWH Global
Keith BircherCanadaCalgon Carbon
Ernest BlatchleyUSAPurdue Univ.
Jim BoltonCanadaBolton Photosciences Inc.
Pedro Da CruzUSASuez Treatment Solutions
Joel DucosteUSANorth Carolina State Univ.
Bertrand DussertUSAXylem Services
Jutta EggersGermanyDVGW
Josh GoldmanUSACDM Smith
Linda GowmanCanadaTrojan Technologies
Ron HofmannCanada (Secretary)Univ. of Toronto
Jiangyong HuSingaporeNat. Univ. of Singapore
Gary HunterUSA (Treasurer)Black and Veatch
Joop KruithofNetherlandsRetired
Oliver LawalUSA (President Elect)Aquisense
Karl LindenUSA (Past President)Univ. of Colorado
Wenjun LiuChinaTsinghua Univ.
Bram MartijnNetherlandsPWN
Jon McLeanUSAETS UV Technol.
Shelly MillerUSAUniv. of Colorado
Kumiko OgumaJapanUniv. of Tokyo
Jennifer OsgoodUSACDM Smith
Phyllis PosyIsraelAtlantium
John RyanUKHanovia
Rick SakajiUSAEast Bay Mun. Util. Dist.
Chengyue ShenUSAHDR
Regina SommerAustriaMed. Univ. of Vienna
Dick StoweUSAHeraeus Noblelight
Paul SwaimUSACH2M Hill
Bryan TownsendUSABlack and Veatch
Harold WrightUSACarollo Engineers

IUVA Honors G. Elliott Whitby with Lifetime Achievement Award

Having retired from full-time employment in 2014, Elliott Whitby leaves a legacy as one of the leading UV system designers. Whitby has worked for a number of manufacturers, including Trojan, Wedeco, Calgon Carbon and Wallace and Tiernan. He was instrumental in the promotion and acceptance of UV disinfection for wastewater applications.

In his 35-year career, Whitby has written hundreds of papers and presentations and has a patent on the application of UV light to control zebra mussels. Whitby is a pioneer who has helped train and mentor hundreds of people in the UV industry. He has worked tirelessly on committees and was always available to volunteer. He is a founding member of the IUVA, is on the editorial board of IUVA News and was the recipient of the IUVA Volunteer Award at the last World Congress in Las Vegas. Whitby has been a key element in the commercialization of open channel wastewater water systems for over 25 years. In addition, Whitby has been a key member of many IUVA initiatives, conferences and publications. As he is now retiring, his presence will be missed at IUVA events, and we hope this recognition will offer a lasting memory of his contributions to the industry.

Previous winners include Jim Malley, Jr., 2007; Hank Vanderlan, 2009; Bill Cairns, 2011; and Jim Bolton, 2013.

UV Engineering Project of the Year

Groundwater Replenishment System, Orange County, Calif.
(Nominated by Crystal Nettles, Orange County Water District; award accepted by Denis Bilodeau, director of the Orange County Water District)

The Groundwater Replenishment System (GWRS) is the world’s largest water purification system for indirect potable reuse and helps increase Orange County, California’s water independence by providing a locally-controlled, drought-proof supply of high-quality water. With an initial expansion completed in June 2015, the GWRS generates enough near-distilled quality water to meet the annual needs of 850,000 people.

After wastewater is treated to secondary levels at the Orange County Sanitation District, it flows to the GWRS where it undergoes a state-of-the-art purification process consisting of microfiltration, reverse osmosis and ultraviolet light (UV) with hydrogen peroxide.

Water is exposed to high-intensity UV light with hydrogen peroxide to disinfect and to destroy any trace organic compounds that may have passed through the reverse osmosis membranes. This step is required by the project’s permit and is considered an extremely efficient safety barrier. This process also is important to garner public support as a source of safe, high-quality and reliable water.

More than 1,700 UV lamps were installed during the GWRS initial expansion, bringing the system’s total to 5,616. It takes only 10 seconds for the water to pass through three reactors and become completely sanitized.

Project benefits include:

  • A locally-controlled, reliable supply of high-quality water that is drought-resilient.
  • Protection for the environment by reusing a precious resource and reducing the amount of wastewater discharged to the Pacific Ocean.
  • Producing water that meets or exceeds state and federal drinking water standards.
  • It is designed to be further expanded to increase production capacity to help meet future water needs.
  • It uses less than half the energy required to transport water from Northern to Southern California.
  • It uses one-third the energy required to desalinate seawater.
  • It produces water at a unit cost of $525 an acre-foot with subsidies and $850 an acre-foot without subsidies – each less than the cost of imported water.

UV Light Award (Volunteer Recognition)

Oliver Lawal
Oliver Lawal has been a member of the IUVA since its founding in 1999 and was just elected as the new incoming president. He has led two key initiatives of the Manufacturers Council that resulted in important UV industry documents published by the IUVA: “Measurement Protocol for UV Lamps with a Monochromatic (254 nm) Output” and the “Uniform Protocol for Wastewater UV Validation Applications.” Lawal became a member of the IUVA Board in 2009 and has continued to actively support the efforts of the organization through participation in conferences, the contribution of material to IUVA News and through event sponsorship and advertising. Most recently, as treasurer of IUVA, Lawal worked to help manage and sustain the organization through a transition period and worked on an almost full-time basis to manage IUVA finances. Oliver Lawal has built his career with a passion for UV treatment. He has worked hard to ensure the IUVA can remain viable as an organization to continue its vision.

UV Young Professional Award

Dr. Mengkai Li
Dr. Li is an assistant professor at the Research Center for Eco-Environmental Sciences (RCEES) of the Chinese Academy of Sciences in Beijing. Among his accomplishments, Dr. Li has developed a leading-edge photoelectric detector, which is the first fluence rate (FR) detector with broad application prospects in the UV field. Based on this novel detector, a number of distinctive studies have been completed, including in-situ fluence rate distributions in single- and multiple-lamp running UV reactors, the reflection effect of various inner reactor walls and innovative technologies for on-site inspection of the practical fluence in UV reactors. In addition, Dr. Li also developed an innovative mini-fluidic photoreaction system (MFPS) suitable for bench-scale photochemical experiments. With this system the photoreaction results of various light sources can be quickly and accurately compared, providing a powerful tool for selection of an optimal light source to meet diversified requirements in water and wastewater treatment.

UV Product Innovation

Stet Clean® (nominated by Dr. Gabriele Messina)
Stet Clean® is a high-tech innovative device for disinfecting a stethoscope membrane through UV-C LEDs. Hospital-acquired infections are a huge worldwide problem. The stethoscope is the most used medical device: a sensor, a symbol of medicine and hand extension of health care professionals. The stethoscope also has proved to be a carrier of microorganisms because of its membrane coming into direct contact with patients’ skin.

Stet Clean has developed a micro-electronic device that breaks down and eliminates the transmission of microbes caused by stethoscopes. It approaches the problem in an innovative way, using a physical method of disinfection – UV-C light generated by a single LED. Health professionals, after every use of the stethoscope, simply attach the stethoscope’s head to Stet Clean, which disinfects the membrane in a few minutes. Stet Clean looks like a badge on the operator’s coat to which the potentially contaminated surface of the stethoscope’s head adheres by a self-closing magnetic latch that does not interfere with the user’s activities. Stet Clean is lightweight, adaptable to all stethoscopes, effective, rechargeable and inexpensive.

Classic Paper Award

Michael R. Templeton, Robert C. Andrews and Ron Hofmann
The study – “Inactivation of particle-associated viral surrogates by ultraviolet light,” 2005. Wat. Res. 39, 3487–3500 – investigated the influence of particle size and composition on the inactivation of two viral surrogates, bacteriophages MS2 and T4, by low-pressure UV light. It was the first of its kind to specifically examine the impact of actual particle-enmeshment on UV disinfection (versus simple particle scattering) by taking steps to physically attach the phage to particles. It was also one of the first studies to employ techniques for extracting and enumerating particle-enmeshed organisms. The study showed that particles smaller than 2 microns can shield phages from UV light and that UV-absorbing particle composition (e.g. organic content) is especially important in phage survival. This study supports the importance of placing particle removal processes, such as filtration, before UV disinfection, especially in waters prone to the risk of occasional turbidity spikes or UV-absorbing particles (e.g. iron oxides). The paper has been cited 60 times (Google Scholar, as of Oct. 1, 2015) by researchers working in areas, including drinking water treatment, wastewater treatment, the food and beverage industry and water reuse.

Student Presentation Award Winners

1st place: Laith Furatian
Laith Furatian received his bachelor of science in engineering physics from the University of Alberta. He obtained a strong foundation in the theory of water treatment while obtaining his master of science in civil engineering from the University of New Hampshire under the co-supervision of Drs. J. Malley and M. Robbins. His master’s research work involved the study of the UV/H2O2 process applied to biologically treated wastewater and was conducted at Trojan Technologies during a yearlong internship in London, Ontario, with Dr. B. Cairns. Furatian is completing his doctorate in chemical and biological engineering from the University of British Columbia, under the supervision of Dr. M. Mohseni, while teaching in the civil engineering department of the British Columbia Institute of Technology.

Project for which the award was given: “Influence of Temperature and Chloride on the 185 nm Advanced Oxidation Process,” by Laith Furatian and Madjid Mohseni. Furatian’s doctoral research deals with the influence of the water matrix on the 185 nm-based advanced oxidation process. While hydroxyl radicals are generated from water photolysis by 185 nm photons emitted by a conventional low-pressure lamp, the major solutes in the water matrix strongly influence the kinetic pathways and degradation rates of target contaminants. In addition to typical AOP hydroxyl scavengers, the role of chloride and sulfate has been investigated. This work has demonstrated that when chloride is present at typical concentrations, chlorine radicals may become the dominant oxidant under 185 nm irradiation. In general, the 185 nm AOP involves a combination of OH, Cl and SO4– radicals, depending on the water matrix composition and relative reactivity of organic matter. Regarding temperature, it was found that despite the increasing absorbance of water at 185 nm, temperature has a negligible influence on the process.

2nd place: Natalie Hull
Natalie Hull, a native of eastern Kentucky, earned her bachelor of science in civil engineering from the University of Kentucky. After getting married and moving west, she earned her master of science in civil engineering from the University of Colorado at Boulder. Hull then spent two years researching in Dr. Norman Pace’s microbial ecology lab studying drinking water distribution systems. She is currently a Ph.D. candidate in environmental engineering at the University of Colorado at Boulder. With her adviser, Dr. Karl Linden, and members of the DeRISK center, she is researching fundamentals and applications of wavelength-tailored UV technologies for sustainable drinking water disinfection in small communities.

Project for which the award was given: “Ultraviolet Wavelength- and Dose-Dependent Damage of Adenovirus Proteins,” by Sara Beck, Natalie Hull, Chris Poepping and Karl Linden. Adenovirus is a protein-encapsulated, double-stranded DNA virus that is more susceptible to disinfection by polychromatic, medium-pressure (MP) ultraviolet (UV) light than monochromatic, low-pressure UV light. Enhanced disinfection by MP UV is not due to DNA damage alone at wavelengths below 240 nm. This study used SDS-PAGE to quantify wavelength and dose-dependent UV damage of adenovirus proteins. Protein damage correlated with adenovirus absorbance spectrum and spectral sensitivity and was greatest and dose-dependent at wavelengths below 240 nm. This data can inform design of disinfection systems to achieve virus inactivation credit at lower doses than are currently required.

3rd place: Wen-Long Wang
Wen-Long Wang was born in 1990 in China. In 2012, he earned his bachelor of science in environmental engineering from Beijing Normal University. After that, he started his Ph.D. program in Tsinghua University (THU) under the supervision of Prof. Hong-Ying Hu. Now, he is in the fourth year as a Ph.D. candidate in the field of wastewater reclamation. His research interest focuses on the advanced treatment of wastewater to make water reuse possible, especially the removal of adverse trace organic contaminants.

Project for which the award was given: “UV/chlorine oxidation for wastewater reclamation treatment: micropollutant degradation,” by Wen-Long Wang, Qian-Yuan Wu and Hong-Ying Hu. The synergetic effect of UV/chlorine showed a significant synergistic effect on micropollutant (carbamazepine) degradation in wastewater through a generation of radical species (•OH and •Cl). The degradation rate of CBZ increased linearly with increasing UV irradiance and chlorine dose. The degradation of CBZ by UV/chlorine in acidic solutions was more efficient than that in basic solutions, mainly arising from the effect of pH on the dissociation of HOCl and OCl– and then on the quantum yields and radical species quenching. Inorganic carbon and dissolved organic matter could moderately inhibit the degradation efficiency of carbamazepine by UV/chlorine, while chloride did not.

Special Recognition

We would like to recognize the following people that were instrumental in organizing the 2016 IUVA World Congress. Without their efforts, the World Congress would not have happened.

2016 World Congress Organizing Committee
Karl Linden, University of Colorado
Kati Bell, MWH
Jennifer Osgood, CDM Smith
Oliver Lawal, AquiSense
Ron Hofmann, University of Toronto

Technical Content Committee
Ron Hofmann, University of Toronto
Ernest Blatchley III, Purdue University
Jens Scheideler, Xylem
Linda Gowman, Trojan Technologies
Scott Alpert, Hazen and Sawyer

We also would like to thank the 2016 World Congress sponsors:
CDM Smith
Trojan Technologies
AquiSense Technologies
MWH Global