UV Water Disinfection Systems


Presentation Description

UV water disinfection systems utilize ultraviolet light to disinfect water. Learn how that process works in the presentation brought to you by the WaterProfessionals®.


Presentation Transcript


Ultraviolet Water Disinfection Systems © 2016 www.WaterProfessionals.com


Ultraviolet (UV) water disinfection systems utilize light in the 200-300 nanometer range to disinfect water. Most modern UV water disinfection systems operate at 254 nanometers . UV Water Disinfection © 2016 www.WaterProfessionals.com


How It Works Part I Exposure to UV light between 200 and 300 nanometers alters the DNA of bacteria and microorganisms. Bacteria and microorganisms become unable to reproduce or infect other organisms. © 2016 www.WaterProfessionals.com


How It Works Part II DNA and RNA molecules absorb the UV light and dimers form along DNA strands. The dimers disrupt the RNA nucleic material, preventing cellular replication. © 2016 www.WaterProfessionals.com


Required Conditions For ultraviolet water disinfection systems to be effective, water must be “essentially” free of the following: Turbidity Silt Color Iron Manganese Organic Matter UV water disinfection will not succeed if anything shields the microorganism from exposure to the UV light. © 2016 www.WaterProfessionals.com


Required UV Dosage UV dosage must be sufficient to inhibit the DNA of the microorganism. © 2016 www.WaterProfessionals.com


Class A Disinfection The ANSI and NSF require a UV dosage of 38 mWs/cm2 at 254 nanometers for Class A POU and POE disinfection: 38mWs/cm2 = 38 milliwatt seconds per square centimeter Class A POU = Point of Use Class A POE = Point of Entry © 2016 www.WaterProfessionals.com


Equipment Setup Water flowing through high purity glass tubes is exposed to UV light at 254 nm. The size of the UV light used is based on flow rate and the required length of exposure for disinfection. © 2016 www.WaterProfessionals.com


Benefits of UV Disinfection Benefits of disinfecting water with an ultraviolet disinfection system include: No Byproducts No Hazardous Chemicals Environmentally Friendly Effective Microorganism Control High Flow Rate Disinfection No Impact on Chemical Makeup No Impact on pH Levels Low Maintenance © 2016 www.WaterProfessionals.com


Custom Ultraviolet Water D isinfection Systems Call: 800-999-4195 Email: [email protected] © 2016 www.WaterProfessionals.com

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