Comparison of Ozone VS UV in Water
| ULTRA VIOLET (UV) | OZONE |
|---|---|
| The energy is enough to destroy all types of bacteria, virus, protozoa, and fungus. | Mercilessly kills all bacteria and virus. |
| Requires more contact time as the UV rays are stationary & hence water has to be exposed to it for a longer time. | The reaction is instantaneous as the gas mixes with water. The reaction rate is 3,200 times faster than any known method. |
| If the water is turbid & has a high level of suspended solids, the penetration of the rays is not deep. | Reduces turbidity and the suspended dissolved solids do not make any difference. |
| Scale forms on the tube thereby reducing the disinfections rate. | Disinfections rate is constant and there is no scale formation. |
| Cannot eliminate algae & biofilms. | Eliminates algae & biofilms. |
| Cannot kill SPORES of bacteria & virus. | Eliminates even SPORES. |
| Does not act as flocculent. | Act as flocculent. |
| Does not eliminate ODOR. | Eliminates ODOR. |
| Does not eliminate COLOUR. | Eliminates COLOUR. |
| Cannot treat wastewater. | Treats any type of water. |
| UV light cannot increase or decrease energy. | Ozone can be increased or decreased to the desired level for effective treatment of water. |
| The intensity of the bulbs starts reducing. | Intensity cannot waver once fixed. |
| Has very narrow application (Bacteria elimination only). | Has wide applications like eliminating bacteria, odor, color, treating wastewater, effluent, etc. |
| UV intensity cannot be measured. | Ozone presence can be felt. |
| Cannot stop corrosion. | Stops corrosion completely. |
| Cannot store as SPORES will breed and bacteria will come alive. | Treatment is permanent. |
| Bulbs get fused often. | No bulbs involved. |
| Needs maintenance. | No maintenance required. |
| Has no effect on compounds. | Oxidizes the compounds. |