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The course takes you from a state of little or no knowledge of ultraviolet (UV) disinfection to the state where you'll be able to design a UV disinfection unit for a water or wastewater treatment plant. This course is a practical 2-day program...

Course Outline
This course is a practical two-day program, where the emphasis is on learning by doing problems. Each lecture session will be followed by a problem-solving period, where participants can gain further insight into the fundamentals and design issues by working out practical problems, which will then be solved in a group session.
The course takes the participant from a state of little or no knowledge of ultraviolet (UV) disinfection to the state where the participant will be able to design a UV disinfection unit for a water or wastewater treatment plant.

Background Since the discovery in 1998 that UV light is very effective in inactivating protozoa, such as Cryptosporidium and Giardia, UV disinfection has become almost the ‘best available technology’ for disinfecting drinking water and waste water. Many large cities (e.g., Edmonton, Seattle, Vancouver, Pittsburgh, etc.) have now installed UV disinfection systems for drinking water treatment, and the fraction of wastewater treatment plants that use UV disinfection probably now exceeds 50%. UV treatment has virtually no impact on the water quality, except for the inactivation of any pathogens present. However, there is no residual, so usually in drinking water treatment, a small amount of chlorine or chloramines is added to provide a residual in the distribution system.

Objectives The course aims to achieve a(n):
  • Thorough understanding of the fundamentals of UV light, its measurement and properties.
  • Understanding of the types of UV lamps and their comparison.
  • Realization of the mechanism of UV disinfection and the sensitivity of various microorganisms to UV light.
  • Detailed understanding of the concept of UV dose and its measurement. 
  • Enlightened view of how UV reactors are validated to comply with UV regulations in various jurisdictions.
Target Audience
  • Engineers involved with the design, operation, management and maintenance of water and wastewater treatment plants
  • Consulting engineers seeking a better understanding of UV disinfection
  • Engineering students in environmental engineering programs
Program Outline (1.2 CEUs / 12 PDHs)

Session 1 –Ultraviolet (UV) Fundamentals

  • What is UV light?
  • Chemical vs. UV disinfection
  • History of UV disinfection
  • Advantages and disadvantages of UV disinfection
  • The Planck Law of light
  • Terms and definitions of UV light

Session 2 –UV equipment and measurement

  • UV light sources
  • Types of UV lamps
  • Measurement of UV light
  • Absorption and transmission of UV light

Session 3 –Concepts of Photochemistry

  • Excited states
  • Quantum yields
  • Laws of photochemistry
  • Action spectrum
  • Examples of photochemical reactions
  • Mechanism of UV disinfection
  • Sensitivity of microorganisms to UV light
  • Reactivation

Session 4 –UV dose and its measurement

  • UV dose and its measurement
  • Fluence (UV dose) –response curves
  • The Cryptosporidium story

Session 5 –Validation of UV reactors

  • UV disinfection regulations
  • How are UV reactors validated?
  • Biodosimetry
  • Determination of a validated UV dose
Session 6 –Case studies from a survey of installed UV disinfection facilities   Learning Outcomes
After Completing This Course, Participants Should Be Able to:
  • Have a much better understanding of UV light and its effect on microorganisms
  • Understand the concept of UV dose and its importance in UV disinfection
  • Design UV disinfection units for water and wastewater plants
Instructor Dr. James R. Bolton has a BA and MA from the University of Saskatchewan and a Ph.D. from the University of Cambridge.   He served as Executive Director (and Editor of IUVA News) of the International Ultraviolet Association from 1999 to 2007; he is President of his consulting firm, Bolton Photosciences Inc. and Adjunct Professor in the Department of Civil and Environmental Engineering at the University of Alberta.
  He is Professor Emeritus of Chemistry from the University of Western Ontario, London, Canada. Dr. Bolton has over 35 year’s experience in photochemistry and ultraviolet technologies and has over 290 publications, including 10 books and 8 patents.
Prerequisites & Certificates

Certificates offered

A certificate of completed Continuing Education Units (CEUs) will be granted at the end of this course. Each participant will receive a complete set of course notes and handouts that will serve as informative references.

Cancellation Policy
If you wish to withdraw from a course, you must advise us, in writing, including the official receipt. Our policies regarding refund are:

More than fifteen business days in advance: a full refund minus $50.00 administration charge.

Fifteen or less business days in advance: a transfer to another course or a credit, valid for one year, to another GIC course can be considered. Credits are transferable within your organization.

If the course has been running for more than 2 weeks, or after the course has started, an 80% credit towards another GIC course may be considered, if notice is received before the start date of the second session. After this time, no refunds or credits will be issued. If a speaker is not available due to unforeseen circumstances, another speaker of equal ability will be substituted.

GIC reserves the right to cancel or change the date or location of its events. GIC's responsibility will, under no circumstances, exceed the amount of the fee collected. GIC is not responsible for the purchase of non-refundable travel arrangements or accommodations or the cancellation/change fees associated with cancelling them. Please call to confirm that the course is running before confirming travel arrangements and accommodations.

Refund Policy: Allow up to 30 days for refunds to be processed.

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