Ultraviolet (UV) light treatment is a widely recognised and proven method for disinfection of water. It is a physical treatment, not chemical, so it doesn’t alter the water chemistry. UV doesn’t add colour, odour, taste or flavour to the water and doesn’t generate harmful by-products.
UV light energy is used for the process of:
The most common application of UV in water treatment is for water disinfection. UV systems can significantly reduce the microbial counts by destroying at least 99.9% of the bacteria present in the water streams.
Ozone is used within water treatment for oxidation of various contaminants as well as for disinfection of water. The presence of ozone within the water is not desirable in a number of industries and can have significant negative effects on downstream processes. UV can effectively remove ozone from water through destruction.
Total organic carbon (TOC) is the amount of organic carbon found in water and is often used as a non-specific indicator of water quality or “cleanliness”. TOC in source waters comes from decaying natural organic matter (NOM) as well as synthetic sources. Amongst other negative impacts, high levels of TOC can:
- Degrade water purification systems,
- Reduce semiconductor yields in electronics industry
- Contaminate pharmaceutical batches
- Damage power and steam generation equipment.
Chlorine and chloramines are used within water treatment at water treatment plants to disinfect water and ensure its integrity throughout the distribution system. Within a number of markets/ industries the presence of chlorine and/or chloramines within the water is not desirable and can have significant negative effects on downstream processes. UV can effectively remove Chlorine/chloramines from water through destruction.
Benefits of UV Disinfection include:
- Easy to install and service
- Economical and energy efficient
- Addresses a broader range of pathogens than chlorine – some protozoa like Cryptosporidium and Giardia are resistant to chlorination.
Applicable markets for UV:
- Food & Beverage
- Aqua Culture
- Life sciences
- Recreational water
- Oil & gas production