APEC Water logo
APEC Water logo

All articles

Pre-Treatment: Is pre-treatment of my water recommended for a UV system to work?Updated 3 months ago

A 5-micron sediment filter should be installed upstream of any UV system so as to eliminate any particles large enough to block the UV light. Additional activated carbon filter pre-treatment can be added after the sediment filter in order to remove some invisible organic compounds that may absorb the UV energy and reduces the efficiency of the system. The UV system should always be installed downstream of any other water treatment equipment. Ultimately, the quality of your water will determine if additional pre-treatment is required.

Chemicals such as iron and calcium carbonate can form deposits on the UV lamp's protective sleeve, reducing the light that can penetrate the water. Water softeners and iron removal systems are sometimes required.

Chemicals such as iron, tannins and humic acid are able to absorb UV light and thus reduce the amount available for disinfection.

Was this article helpful?
Yes
No