Professor James P. Malley, Jr., Ph.D. UV Solutions editor-in-chief When looking at UV facilities that achieve advanced oxidation through the addition of hydrogen peroxide and UV doses in the range of 1,000 to 10,000 mJ/cm2, three important aspects must be considered. These facilities are selected, designed, installed and operated to meet water reuse criteria. These criteria … [Read more...] about Water Reuse Systems
2019 Quarter 3
For Water Reuse, UV Solution Brings Consistent Results to City
Article provided courtesy of Enaqua, a Grundfos company Water is scarce and in high demand in the mountain desert town of Payson, Arizona. As a result, the city reuses its water. It sends the cleaned wastewater to a public recreational lake and then onward for irrigating green areas in public parks, golf courses and schools. Therefore, it is vital that the water is treated … [Read more...] about For Water Reuse, UV Solution Brings Consistent Results to City
How to Address CSO Events with UV Technology
Patrick Bollman, P.E. UV product specialist, Evoqua Water Technologies According to a study released by Water Resources Research1 in June 2019, heavy downpours have become more common since the middle of the last century, especially in North America, Europe and Asia. More frequent heavy rain will have implications up and down the ecosystem, from farmers contending with … [Read more...] about How to Address CSO Events with UV Technology
UV-C LED Irradiation for the Inactivation of Biofilm-bound Pseudomonas Aeruginosa Bacteria
Kyle D. Rauch, Stephanie Gora, Carolina Ontiveros and Graham Gagnon Centre for Water Resource Studies, Dalhousie University, Halifax, NS, Canada Biofilms are ubiquitous in nature and have the potential to harbor dangerous, opportunistic pathogens. Biofilms form when planktonic bacteria come into contact with a wetted surface and begin to release extracellular polymeric … [Read more...] about UV-C LED Irradiation for the Inactivation of Biofilm-bound Pseudomonas Aeruginosa Bacteria
What is Going On with the Grade A Pasteurized Milk Ordinance?
Harold Wright chief technologist-UV disinfection, Carollo Engineers The Grade A Pasteurized Milk Ordinance (PMO), published by the Food and Drug Administration (FDA), provides standards and requirements for Grade A milk production and processing. The standards are recommended by the National Conference on Interstate Milk Shipments (NCIMS), whose members include state and … [Read more...] about What is Going On with the Grade A Pasteurized Milk Ordinance?
Why is There No Standard Unit Similar to Lighting Products for Radiant Output of UV Lamps?
R.W. Stowe UV applications engineering consultant, Heraeus Noblelight America LLC The visible portion of the output (luminous flux) of lamps used for illumination is expressed in lumens, a measure of the total quantity of visible light emitted by a source. This is possible because the output is measured only in the wavelength response range of the human eye. This response … [Read more...] about Why is There No Standard Unit Similar to Lighting Products for Radiant Output of UV Lamps?
Practical Information on Sizing and Design Approaches for UV AOP Systems
Nathan Moore Ph.D. candidate, University of Toronto Erin Mackey project manager and technical specialist, water and reuse, Brown and Caldwell, Inc. Kati Bell managing director of water strategy, Brown and Caldwell, Inc. Selecting an ultraviolet light-based advanced oxidation process (UV AOP) for a specific application begins with a clear treatment goal (e.g., 90% … [Read more...] about Practical Information on Sizing and Design Approaches for UV AOP Systems
Critical Roles for Germicidal LEDs in Healthcare Delivery Facilities
Peter Gordon VP of business development, Bolb Corporation Infectious diseases are caused by various pathogens: vegetated bacteria, bacterial spores, virions and fungus. Once transferred upon or introduced into a susceptible patient’s body, these pathogens – some of which are now antibiotic-resistant – replicate and can cause an infection and illness, sometimes resulting in … [Read more...] about Critical Roles for Germicidal LEDs in Healthcare Delivery Facilities
Ultraviolet Light Explores New Science for Food and Beverage
IUVA Food and Beverage Safety Working Group Contact: Tatiana Koutchma, Ph.D. Agriculture Agri-Food Canada, at Tatiana.Koutchma@agr.gc.ca Compared to water and wastewater treatments, air disinfection and surface decontamination, the application of UV light for food and beverage products is a relatively new and challenging area. Effective UV treatment for food applications … [Read more...] about Ultraviolet Light Explores New Science for Food and Beverage
Expanding Outreach to Other Organizations Interested in UV
IUVA Healthcare/UV Working Group Contact: Troy Cowan director, Vision Based Consulting, at troy@visionbased-consulting.us Since the last issue, there has been a tremendous amount of outreach activity focused on expanding the visibility and credibility of UV healthcare technologies and efficacy standards. In June, the Association for Professionals in Infection Control and … [Read more...] about Expanding Outreach to Other Organizations Interested in UV