74
SPN OCT 2010 AllergyFree
www.swimmingpoolnews.co.uk
UV systems like this one from atg are increasingly popular. Higher level of investment is needed but the lower chlorine options are satisfying the needs of more commercial pool owners than ever
“Although we still need to add some chlorine for residual disinfection, the amount is much reduced, and chloramine levels are now consistently below 0.2ppm. We have people returning to the pool who kept away before as they were so badly affected by the chloramines. One boy from a local primary school couldn’t take part in swimming classes because of a chlorine allergy, now he happily takes part with no reaction,” added Gwyn.
In addition, a member of a local swimming group called ‘Accessible Aquatics’ had to stop attending as he was having a skin reaction to chlorine. “He’s come back and is really enjoying it,” added one of the group’s volunteers, Elaine Brown. “In fact, everyone in the group has nothing but good things to say about the benefits of the UV system.”
The impacts of the UV system have been felt beyond the immediate issue of swimmer comfort. Since the switch to UV there has been a huge reduction in the amount of dilution water required. “Previously, we had to dump the pool water every week – this has now been reduced to just once a month. When you take into account the increase in visitors we are now getting, combined with the reduction in costs for water, lost energy and chemicals, the savings have been considerable,” concluded Gwyn.
The UV units installed at Franklin Pool are Hanovia medium pressure PSP UV systems, one of which can each treat up to 200 m3/hour, the other 100 m3/hour, based on a UV dose of 60 mJ/cm2. Automatic wipers keep the quartz sleeves housing the UV lamps clean, so the only regular maintenance required is changing the lamps every 12 months – a simple operation that is carried out by on-site staff. In addition, Hanovia systems are compact and can usually be installed within existing pipe work, making installation a straightforward process.
Higher water temperatures and increased turbulence in leisure pools requires increased dosages of chlorine, leading to pool users complaining of burning eyes, red or itchy skin and an over powering chlorine smell throughout the facility. In some cases the fabric of the building has also been attacked through corrosive condensation. The main reason for these problems is the production of chloramines in the water caused by the reaction of free chlorine residuals with organic materials, such as bacteria brought in to the environment by pool users. Manufacturers such as atg UV incorporate UV systems into existing control strategies to protect against micro-organisms including chlorine resistant pathogens such as cryptosporidium, an organism that is now a
“Higher water temperatures and increased turbulence in leisure pools requires increased dosages of chlorine, leading to pool users complaining of burning eyes, red or itchy skin and an over powering chlorine smell throughout the facility”
major concern for water treatment engineers and leisure operators worldwide.
Additionally a correctly sized UV treatment system reduces chloramines, the compound responsible for skin irritations, red eye and the often overpowering chlorine smell. The result is safe, glacier clear sparkling water, fresh air and happy customers. atg UV, an industry leader in the UV industry have provided over 1,500 UV treatment systems for aquatic applications worldwide, and have warranted their success in the leisure industry to their break through Inline ECF system range which was designed and engineered specifically to suit aquatic applications such as swimming pools, spa’s, splash pads and hydro pools. The ECF range offers operators an exceptionally compact solution that provides a high-output with a small footprint, allows for ease of
installation/maintenance and minimises both head loss and pressure drops. spn
i FOR FURTHER INFORMATION
F ALIGATOR ( 01206 543485 :
www.aligator.co.uk F AQUAFINESSE ( 01348 841116 :
www.aquafinesse.co.uk F ATG UV ( 01942 216161 :
www.atguv.com F HANOVIA ( 01753 515300 :
www.hanovia.com F POOLSAN DIRECT ( 020 8500 4847 :
www.poolsandirect.co.uk F PURE+ ( 0845 006 3063 :
www.pureplus.co.uk
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