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UV Water Disinfection Systems


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

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UV Water Disinfection Systems

  1. 1. Ultraviolet Water Disinfection Systems © 2016
  2. 2. • 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
  3. 3. 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
  4. 4. 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
  5. 5. 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
  6. 6. Required UV Dosage • UV dosage must be sufficient to inhibit the DNA of the microorganism. © 2016
  7. 7. 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
  8. 8. 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
  9. 9. 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
  10. 10. Custom Ultraviolet Water Disinfection Systems Call: 800-999-4195 Email: © 2016