UV SYSTEMS
Shedding Some Light On 2025’s UV Options For many commercial and increasingly domestic settings, when it comes to the effective treatment of water in swimming pools and spas, UV systems have become an established choice. Their success is no real surprise when you consider the many benefits on offer from these ultraviolet systems, but their big selling point is a large reduction in chlorine use. As more installations make the switch to UV, additional products have become available. Here we shed some light on some of the options that are currently available By Jon Wadeson
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ltraviolet light, or UV light as it’s most commonly shortened to, is, when used correctly, an extremely successful disinfectant. UV’s effectiveness lies in its ability to inactivate viruses, bacteria and pathogens and in the world of wet leisure, that includes the nasty Cryptosporidium and Giardia variants which are able to survive in water despite the presence of various sanitisers. In addition to its biocide action, UV has a powerful oxidising effect which successfully removes organic pollution from pool and spa water. So when UV is used in conjunction with chlorine, the various chloramines that cause eye and skin irritation are turned into easily removed by-products. This action leads to healthier bathing for swimmers and improved working conditions for staff in commercial environments. Although hugely effective, UV is still a secondary disinfection process that is used alongside, primarily chlorine, as the principal disinfectant in swimming pool and spa water. The reason for this is that UV only treats water as it passes through the lamp, therefore a sanitiser is needed to provide a constant defence throughout the rest of the water system. So whilst chlorine use is minimised, it still plays an essential role in providing the safest possible water. Through the use of UV, it is possible to reduce sanitiser levels drastically by as much as 80% and down to as little as 0.5ppm. In addition to requiring less chemicals, water treated with UV will also require less backwashing plus heating costs will be lowered too – both of which are great given the current climate! So in summary, the water in a UV treated pool or spa is better for anyone using or operating it, it uses less chemicals, requires less backwashing and both water and heating costs are reduced – what’s not to like? With so many benefits, it’s little wonder that UV has become a popular choice for pools of
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all sizes and its use has expanded beyond the commercial sector and found its way into an increasing number of residential installations. There are plenty of options available to choose from for both sectors too, so in this latest issue, we shed some light on just some of the ultra effective options that are making water safer through the power of UV.
they have been designed to comply with NSF 50 standard. Other features of the AQS-PL UV systems include: • Corrosion Resistant Epoxy Coating • Power Stepping • Manual or Automatic wiper • BUS connection option • Temperature Switch or Sensor.
AQUASERVICE’S VERSATILE UV SYSTEM IS SUITABLE FOR ALL POOL TYPES
AQS-PL UV systems emit polychromatic UV radiation. The multiple wavelengths in the medium pressure UV lamps destroy the molecular bonds of combined chlorine/ chloramine compounds. Therefore, UV removal of chloramines is a non-chemical and reliable method to control combined chlorine in swimming pools. In addition, each system is sized and designed to achieve a minimum of a 99.9% reduction of cryptosporidium, therefore guaranteeing safe bathing for all with no risk of chlorine resistant organisms surviving in the water.
According to Norwegian manufacturer Aquaservice, their AquaUV Pool Line UV System (AQS-PL UV for short) is the most versatile swimming pool UV system on the market. It’s designed to treat all types of pool usage, from heavy use children’s swimming pools to low use diving or private pools. Of course, each type of usage requires a different type of UV set up – no one type of UV system will fit all swimming pool usage and requirements – and systems are offered with flow rates ranging from 6m3/h to 580m3/h and the total maximum lamp power output spanning 0.4kW to 8.4kW. For ease of installation, connections can be amended to suit pipework and in addition, having the ability to supply bespoke options when required, makes it one of the most unique swimming pool UV systems available on the market. These medium pressure UV lamp systems offer a minimum lamp life of 10,000 hours, and as with the company’s Pool Line filters,
Aquaservice claim their AquaUV Pool Line UV System is the most versatile swimming pool UV system on the market
LET BIO-UV AND ASTRALPOOL MAKE LIGHT WORK OF WATER DISINFECTION AstralPool UK and BIO-UV have been working together for just over two years with the Hampshire-based distributor supplying the French manufacturer’s UV Stainless Steel, UV FW and UV NEO systems for residential pools and UV MPL, UV FW and NSF certified triogen® UV CF systems for commercial installations. Customers are constantly looking for more environmentally friendly solutions to treat and disinfect their pool water automatically. For over 30 years, BIO-UV Group met these challenges by offering alternative technologies (UV-C, salt electrolysis and ozone) and complementary solutions to treat water, guaranteeing flawless hygiene and bathing comfort. Some of the advantages of the BIO-UV range of UV-C products on offer include: • Mirror-polished 316L stainless steel, passivated 316L stainless steel or PVC reactors ranges
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