| What
Is UV? |
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| Although we can't see UV
light, we are exposed to a small amount every
time we step out into the sun. In fact, UV light
is responsible for sunburns. The water treatment
industry uses special lamps that emit UV light
of a particular wavelength in order to disinfect
water.
UV light works by attacking
the genetic core (DNA) of bacteria and viruses,
destoying their ability to function and reproduce.
The process is simple but effective: our systems
destroy 99.99 percent of harmful microorganisms
without adding chemicals or changing your water's
taste or odour. |
| Advantages
Of UV |
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| There are some very important
reasons why homeowners and large cities are choosing
UV technology:
Highly effective: For over 25 years, UV light
has been trusted as a safe, cost-effective way
to purify water and eliminate harmful microorganisms.
It?s a proven, EPA-endorsed technology that has
been chosen by thousands of cities, bottled water
manufacturers and others around the world.
Chemical free: UV provides water purification
without the addition of harmful chemicals like
chlorine. It also avoids the potential of generating
harmful chemical disinfection by-products. Recent
EPA guidelines are forcing cities across the US
to reduce or eliminate the use of chlorine for
exactly these reasons.
Taste & odor free: UV does not change the taste,
odor or color of water
More effective than chlorine: Unlike chlorine,
UV is effective against both Cryptosporidium and
Giardia. |
| Private
Water Supplies |
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| Over 19 million American
households and cottages rely on private wells.
Tens of thousands more rely on lakes, streams,
and other surface water sources. Unfortunately,
not all of them have a UV water disinfection system
protecting them from harmful microorganisms.
While nation-wide studies do not exist, smaller
scale studies have commonly found that between
20 and 40% of wells in any given region suffer
from E.coli and/or coliform bacteria at any given
time ? not to mention the countless other microorganisms
that may be in a water supply.
The fact is that the quality of well water can
vary from day to day and from year to year. In
the short term, things like heavy rainfalls or
snow melt can affect water quality. In the longer
term, quality may be affected by distant contamination
sources, earthquakes, and other factors. Water
that has been safe for years will not necessarily
be safe tomorrow. |
| Munincipal
Water Supplies |
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| Around the world, governments
invest heavily in order to assure the safety of
the drinking water for their citizens. However
growing pollution and the costs of maintaining
distribution networks make boil water advisories
increasingly inevitable. Beyond the inconvenience
they cause, such advisories are a clear warning
that the clean water we've taken for granted is
becoming a scarce resource. In May, 2000, 220
communities in British Columbia and 250 in Newfoundland
faced boiled water advisories. |
| Disinfection |
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| The most common application
of UV technology is for disinfection. From water
bottling to rinse water disinfection in food-processing
plants, and from cooling towers to wastewater
disinfection, there are countless disinfection
applications of UV.
Ultraviolet light, which exists at the invisible,
violet end of the light spectrum, is able to disinfect
because it is able to penetrate the cells of bacteria
and viruses, destroying their ability to reproduce.
Unable to reproduce, these organisms die and no
longer pose a health threat. The process is simple
but effective: our systems destroy 99.99 per cent
of harmful microorganisms without adding chemicals
or changing taste or odour. Chlorine contributes
taste and odours to the water, and can damage
RO membranes. For this reason, dechlorination
is most often required. Furthermore, both chlorine
and ozone may produce by-products that have been
linked to cancer, such as trihalomethanes (THMs)
in the case of chlorine. UV light does not produce
harmful chemicals in drinking water. It's safe,
effective, and environmentally friendly. |
| Solutions
For Aquaculture |
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| Water purity is the lifeblood
of aquaculture. As higher stock densities and
the constant pressures to reduce operating costs
drive the industry, dependence on efficient, effective
water treatment solutions is growing. Increasingly,
the approach to keeping fish stocks free from
dangerous viruses and bacteria is the incorporation
of Ultraviolet light (UV) into water treatment
systems.
UV is a safe and extremely cost-effective approach
to safeguarding aquaculture facilities from bacteria,
viruses, protozoa, spores, and other microorganisms.
It is an environmentally friendly approach to
water purification that offers these important
benefits:
• Proven effectiveness
• Chemical-free treatment - safe to handle
• No toxic by-products
• No effect on pH, odor or color
• No residue
• No risk of overdosing
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