Comparison of the Currently Used Disinfection Methods
Characteristics | Ultraviolet | Chlorine | Ozone |
Investments costs | Low | Lowest | High |
Operating costs | Lowest | Low | High |
Installation requirements | Excellent | Good | Bad |
Maintenance requirements | Excellent | Good | Bad |
Maintenance costs | Lowest | Average | High |
Maintenance frequency | Seldom | More frequent | More frequent |
Supervision | Simple | Difficult | Neutral |
Disinfection efficiency | Deactivates all microorganisms | Leaves some pathogens | Deactivates all microorganisms |
Changes in the water | No changes | Organice chlorine combinations, changes in taste and smell | Not known |
Contact time | 0,5 - 5 seconds | 30 - 60 minutes | 10 - 20 minutes |