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How does an Ultra Violet (UV) Disinfection Water Filter System Work?

How does an Ultra Violet (UV) Disinfection Water Filter System Work?


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This video by Gary the Water Guy explains How an Ultra Violet Disinfection water filter system works.

If you are on well water or are drawing water from a lake or river you need to make sure that your water is bacteria free.  If there is bacteria in your water your family and guests will get sick! 

An Ultra Violet Disinfection Systems is often preferred for this type of application because it is a chemical free process, but how does it work.

A great example is a 3 stage Ultra Violet Disinfection system.

This type of system incorporates some pre filtration to make sure the Ultra Violet light can do its job effectively.

The first stage consists of a 5 micron sediment pre filter to make sure that no particles larger than 5 microns get to the Ultra Violet Light as particles of that size or larger could shield the bacteria and prevent the Ultra Violet light from killing it. 

The second stage is a carbon taste and odour filter to improve the taste of the water while absorbing odours, but more importantly, this also absorbs chemicals form the water.  Chemicals like herbicides, pesticides, gasoline and benzene must be removed from your water before you consider drinking it.

After the sediment and chemicals have been removed from the water it is now ready to pass over the Ultra Violet Light itself.  Much like the sun the Ultra Violet light kills the bacteria as the water passes through its chamber.

The Ultra Violet light bulb needs to be changed every year as it loses its ability to kill bacteria after 12 months.  The carbon filter usually lasts 12 months and the sediment pre filters' life is highly dependent on how much sediment there is in your water, but must be changed at least every 12 months.

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