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leisure design & build bulletin - May 2014

Benefits of UV Technology for aquatic applications
atg UV Technology

Benefits of UV Technology for aquatic applications

The use of Ultraviolet disinfection for swimming pool applications worldwide is growing fast. From small swimming pools, spas and hydro pools to large municipal leisure facilities and full scale water theme parks, the installation of UV treatment is now becoming standard practise in many UK leisure facilities.

As water features, wave machines, flumes and splash pads raise the fun factor in swimming pools, the traditional method of disinfecting water by using chlorine is causing problems for operators and customers alike. 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. Whilst Ozone can be successful at reducing chloramine levels, both the installation and operation is extremely expensive and requires skilled personnel to operate the plant, again driving up operating costs.

The swimming pool industry has therefore, been seeking alternative ways of disinfecting water and reducing the organic loading of water. Ultraviolet treatment provides the perfect answer. UV wavelengths between 240 and 280 nanometres deactivate all micro-organisms, particularly Pseudomonas (SP) and Ecoli. Manufacturers such as atg UV can 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 major concern for 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 a more inviting bathing environment. Typically, following the installation of UV treatment, operators report a significant drop in combined chlorine levels, chlorine smell and a large reduction in the need for taxing back washing and shock treatments.

atg UV’s ECL system is designed and engineered specifically to suit applications such as swimming pools, spa's, splash pads and hydro pools. Offering pool operators a flexible and cost effective solution, treating up to 2000 m3/hr in a single high-output, small footprint system. For more information on UV treatment for pool applications, please click on the links below.

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