Ultraviolet lamps have been used for decades to generate ozone. This lamp emits UV light at 185 nanometers (nm). Light is measured on a scale called an electromagnetic spectrum and its increments are referred to as nanometers. Figure 1 represents an electromagnetic scale; note the location of higher-frequency ultraviolet light relative to visible light (the range of light perceptible by the human eye).
Wavelengths in nm
Image courtesy of Ozone Solutions
CORONA DISCHARGE (CD) OZONE GENERATION
OZONE BEING CREATED VIA CORONA DISCHARGE.
At the heart of a corona discharge ozone system is the dielectric. The electrical charge is diffused over this dielectric surface, creating an electrical field, or "corona".
Of the ozone technologies mentioned above, none has a clear advantage. However, to help narrow the field for a particular application, consider the amount of ozone required. You may find that low and medium frequency ozone systems will have prohibitively high initial costs for applications requiring less than ten lbs./day. However, they have a proven history of durability and reliability. High frequency ozone generators seem to have the best combination of cost efficiency and reliability for applications requiring less than ten lbs/day of ozone output.
ADVANTAGES OF CORONA DISCHARGE OZONE GENERATION
- Corona discharge ozone generators benefit from oxygen preparation thereby doubling the ozone output per given volume vs. dry air
- Small construction allowing generator to be installed in virtually any area
- Creates a more pure form of ozone without creating other harmful or irritating gases
- Corona cell life can exceed ten years
- Can create high quantities of ozone (up to 100-lbs/day)
- Can be more cost-effective than UV-ozone generation
ADVANTAGES OF ULTRAVIOLET (UV) OZONE GENERATION
- Environmentally Safe
- Easier to clean - Less cleaning required
- Zero Nitrogen Oxides
- UV (ultraviolet) ozone production is not affected or diminished by humidity
- Impossible to overdose
What does Ozone do?