There are many benefits of using UV water purification systems, here are just a few:
No need to handle potentially dangerous chemicals (chlorine)
Virtually immediate disinfection (no contact tanks like chlorine)
Low power consumption environmentally friendly (no disinfection by-products)
No moving parts to wear out or replace UV does not change the taste or odour of the water
Lower equipment investment verses other disinfection options Simple maintenance (with proper pre-treatment).
Disinfection is defined as “The act of disinfecting, using specialized cleansing techniques that destroy or prevent growth of organisms capable of infection.”
Disinfection is a considered a 4-log reduction or equivalent to a 99.99% reduction
There are generally two methods specifically for the disinfection of water:
CHEMICAL Disinfection: chlorine, ozone, iodine, bromine
PHYSICAL Disinfection: UV light, boiling, fine filtration
UVC Water Purification and Disinfection Machine
If using chemical disinfection a chemical must be added in order to destroy the microorganisms present
One method of chemical disinfection that we are most aware of is chlorination – specifically of our drinking water
Using a chemical such as chlorine will not only target bacteria but it will also change the taste of the water, the smell, the pH as well as possibly form disinfection by-products (i.e. trihalomethanes).
Physical disinfection does not require anything to be added to the water
This method of disinfection targets the microorganism only
Boiling, filtration, ultraviolet disinfection
When the contaminated water is boiled only the microorganisms are targeted killing them as the temperature increases
When the contaminated water is fine filtered specific microorganisms are removed depending on their size and the rating of the filter ted through DNA inactivation
Using any of the above physical methods will not change the taste, odour or chemical makeup of the water
One of the simplest and most effective ways to disinfect drinking water is by using UV disinfection
In theory UV disinfection is a simple process. The 254nm energy coming from the UV lamp needs to reach the target microorganism in the water supply. However, many barriers affect UV performance. These include:
Suspended Solids, both visual and not visual particulate matter (turbidity).
Scale, fouling caused by physical scale deposits on the quartz sleeve from iron, manganese or calcium carbonate covering the quartz sleeve
UV Absorbing Compounds, UV absorption in water is almost entirely caused by dissolved substances. Certain organic substances such as humic or fumic acids (tannins), and certain inorganic substances such as iron and manganese absorb UV.
These contaminants MUST be addressed for UV Treatment to be effective
UV is NOT a stand-alone treatment process and is always accompanied by other water treatment processes