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Water Disinfection and Filtration
Recreational Water Sector
For public and private swimming pools and water parks
Pool water must be treated to keep it free of harmful substances.
The formation of chloramines and chlorinated organic compounds that are known to cause pool odors as well as eye, nose and throat irritation,
It is of particular concern in swimming pool waters.
Most common applications
Desinfection
This is the most common application of UV in water treatment. A properly sized UV system must be designed to achieve a minimum of
3-log reduction to a minimum of 30,000 micro-watts per second (or 30mJ/cm2) to one year lamp life. The typical installation location would be after
of sand filters.
For most pool operators, chlorine is the disinfectant of choice, although there is increasing awareness of the negative effects of chlorine
and its byproducts on health. On the other hand, unlike bacterial pathogens, Cryptosporidium oocytes are resistant to
disinfection with chlorine and can survive for days in treated recreational water locations. The popularity of recreational water centers, the number
and the geographical distribution of recent cryptosporidiosis outbreaks and the resistance of Cryptosporidium to chlorination suggest that it is necessary
improve treatment strategies for recreational water facilities.
OptiVenn line product
UV light represents a powerful technology that has been successfully deployed in swimming pools for several years. UV disinfection in swimming pools
and water parks is a complementary method effective in inactivating a wide range of waterborne pathogens, including
Cryptosporidium. UV simultaneously disinfects and destroys chloramines and chloroorganisms instantly when
The water passes through the irradiation chamber. The use of UV disinfection for swimming pools is particularly suitable for bathers sensitive to disinfectants
habitual of swimming pools or allergic to chlorine.
UV is not designed to completely replace chlorine, but by eliminating the need for periodic "shock" treatments,
Well-maintained pools can see significant reductions in chlorine use.
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Chlorine / Chloramine Destruction
While adding chlorine to the water system can control bacteria levels, it should not be forgotten that it has undesirable effects on degradation.
of filtration and OI membranes.
In addition, popular methods of removing chlorine and chloramines, such as carbon beds or chemical injection, have proven to be problematic.
Sodium metabisulfite involves the elimination of one chemical substance through the use of another, generating food for microorganisms, while
Coal beds can be inefficient, vulnerable to preferential channel formation, providing a breeding ground for microorganisms.
The application of UV radiation technology for the destruction of chlorine and chloramines pre-filtration membrane and OI for water conditioning is being
establishing itself as the most sustainable alternative.
Bathers introduce organic compounds into the water, such as bacteria, urine, sweat and other excretion products. The pool water must be
to treatment, in order to remain clear and clean, free of harmful substances, bacteria, viruses, algae and other pathogens and suitable for use by bathers.
This requires the need for disinfectants such as chlorine that is added to water to inactivate pathogenic microorganisms. Sweat and urine are composed
largely of water, ammonia and urea. When these products react with chlorine, unwanted compounds can form consisting mainly of
of chloramines. Of particular concern in pool water is the formation of chloramines and chlorinated organic compounds, known as
cause odors in the pool and irritation of the eyes, nose and throat.
While adding chlorine and derivatives to pool water can control bacteria levels, there is growing awareness about the negative impacts
of chlorine and its derivatives on health. On the other hand, unlike bacterial pathogens, Cryptosporidium oocytes are resistant.
to disinfection with chlorine and can survive for days despite maintaining the recommended levels of residual chlorine (1-3 ppm) in the water used.
recreational. A UV system sized for chloramine reduction (60mJ/cm2) provides a UV dose sufficient to inactivate Cryptosporidium. The systems
UV can also significantly reduce microbial counts by destroying at least 99.9% of the bacteria present in the influent flow.
when installed after filtration.
