Simple, efficient and non-hazardous
When water meets light…
UV sources amplify the natural phenomenon
The Sun has a cleaning effect due to the emission of invisible light: ultraviolet (UV).
This natural phenomenon is reproduced and amplified by our powerful ultraviolet emission sources.
The DNA and some elements of micro-organisms (viruses, bacteria, yeasts, moulds, etc.) are damaged by UV wavelengths (200 to 315 nanometres). This blocks replication of the genetic material and prevents a micro-organism surviving and multiplying.
All the germs may be disabled, even though they do not all have the same UV sensitivity.
In addition to disinfection, UV treatment has other applications:
destruction of chloramines
photo-oxidation of Total Organic Carbon (TOC)
The advantages of UV sources over other methods of disinfection (source: French water agency) :
|Equipment reliability||good||quite good||quite good|
|Regulation||yes||at design stage||yes|
|Sensitivity to maintenance||low||high||high|
|Fish toxicity||toxic||non-toxic ?||non-toxic|
|Increases dissolved O2||no||yes||no|
|Reacts with ammonia||yes||yes||no|