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. 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. Ask your dealer about Trojan
UV's free water-testing service for hardness, iron, and UV transmittance.
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 UB light and
thus reduce the amount available for disinfection. After performing
a simple test to measure your water's UV transmittance, your water
treatment specialist can recommend treatment devices to suit your
water supply. |