UV Ultraviolet Water Purification
What is ultraviolet (UV) light?
Ultraviolet light exists at the invisible, violet end of the light spectrum. Although we can’t see UV light, we are exposed to a small amount every time we walk out into the sun. The water treatment industry uses special lamps that emit UV light of a particular wavelength in order to disinfect water.
How does UV work?
UV rays penetrate into bacteria and viruses and destroy their ability to function and reproduce. The process is simple but effective: our systems destroy 99.99 per cent of harmful microorganisms without adding chemicals or changing your water’s taste or odour.
Why not use chlorine?
Many people object to the taste and smell of chlorinated water. But more importantly, chlorine reacts with certain compounds that may be present in the water supply, resulting in by-products that have been linked to cancer (such as trihalomethanes, or THMs). UV light does not produce harmful chemicals in drinking water. It’s safe, effective, and environmentally friendly.
Is pre-treatment of my water required for a UV system to work?
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 TrojanUV’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 UV 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.
How do I know what size of UV unit to buy?
You can treat the water for your whole home or just the drinking water from one tap. If you draw on a private water supply, it is recommended that you treat the water for your entire home. To determine the size of system you require, try our Model Selection Tool.
Does a UV system consume a lot of energy?
No, a UV system able to treat the water for a typical house will consume about the same amount of energy as a 60-watt light bulb. UV is a cost-effective, natural way to increase water quality.
How often would I have to change the UV lamp?
It is essential that you change the UV lamp either once a year, or once every two years depending on which TrojanUVMax system you own. UV lamps, like light bulbs, will dim with age and eventually burn out. Trojan designs its UV units to generate the necessary UV light intensity at the end of one year’s continuous use. The lamp will continue to burn long after, but it will not generate an adequate amount of UV light.
What kind of warranty does Trojan offer?
A quality product comes with a superior warranty. That’s why the TrojanUVMax comes with an unparalleled, ten-year warranty against manufacturer’s defects on the UV chamber, and three years on the circuit boards, power supply’s, and all electrical connections. The UV lamp and the sensor (not on all models) come with a one-year warranty. The above applies to components of original system.
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