THE ALTERNATIVE APPROACH
Hanovia’s new SwimLine Splash range is specifically designed for treating smaller water flows and will reduce the amount of chlorine used
From hydrotherapy spas to full-sized competition pools, UV is now a well- established method of swimming pool water treatment. This growth in popularity has been largely due to UV’s reliability and ease of use, combined with the reduced reliance on traditional chemical treatments it affords. Another major benefit of UV is that it significantly reduces the need for
backwashing and dilution, saving hundreds of pounds a month for pool operators.
There are two main types of UV technology based on
replacement for chlorine.
In terms of minimising chlorine use UV can reduce the amount of free chlorine that is measured in a pool by up to 50%, but since UV has no residual effect outside the UV chamber the pool requires an additional residual disinfectant to minimise cross infection between bathers. Photo- oxidisation through UV generation reduces the amount of dilution required to remove unwanted combined chlorine compounds from the pool and will also inactivate the microorganisms that chlorine cannot easily remove, such as Cryptosporidium. A typical pool can reduce the free chlorine residual from 1.5ppm to around 0.8ppm, resulting in an increased user experience, both in the pool and the pool surround atmosphere. The benefits of the Topline Low Pressure UV, when compared to a medium pressure UV system, are much lower energy consumption and reduced spares requirements. A 7kW medium pressure system will typically use around £6,000 of electricity per year. A Topline low pressure unit will use only £500 of electricity in a year, and requires only a lamp and quartz sleeve change each year, minimising the spares requirements many UV units require. The Topline ultraviolet treatment system offers a unique full flow design to eliminate dead spots and areas of poor flow within the chamber, and can be configured to treat any size of system and is used widely for all types of swimming pools, spas, hydrotherapy pools, interactive play structures and water features.
HANOVIA’S ‘SWIMLINE SPLASH’ DESIGNED SPECIFICALLY FOR SMALL FLOWS
the type of UV lamps used: low pressure and medium pressure. Low pressure lamps have a monochromatic UV output (limited to a single wavelength at 254nm), whereas medium pressure lamps have a polychromatic UV output (with an output between 185-400nm).
Owners and operators of small pools and spas don’t need large UV systems to treat their water. What they do need, however, is high quality, reliable UV technology designed for smaller water flows. Hanovia’s medium pressure UV
technology virtually eliminates the need for chlorination (except for small residual amounts) – so sore eyes and the unpleasant ‘chlorine smell’ are a thing of the past. In countless Hanovia installations around the world, bathers and staff always comment on how much better the air quality around the pool is. Added to that, UV-treated water is demonstrably clearer and there is less wear and tear to building structures from unwanted chlorine by-products.
The SwimLine Splash is economical to operate, very compact and easy to install, service and maintain – all important considerations for small operators and if required, UV output can also be optimised with an optional UV intensity monitor. Commenting on Hanovia’s technology, one pool operator in Auckland, New Zealand summed up the benefits of UV by saying: “When you take into account the increase
in visitors we’re now getting (the pool was losing visitors prior to switching to UV because of chloramines), combined with the reduction in costs for water, lost energy and chemicals, the savings have been considerable.”
CERTIKIN UV SYSTEMS BRING WATER TO LIFE
New for 2015 is the Certikin CUV systems for domestic pools. A Certikin UV system will enable a pool to run hygienically with a low level of disinfectant. Just 0.5ppm minimum free chlorine is required for background sanitation. Certikin’s UV range consists of 30, 55 and
110 Watt systems and are ideal for providing the benefits of ultraviolet treatment to most domestic applications. CUVs ensure that the swimming pool water will have amazing clarity, by killing the single cell algae that causes green water. All CUV units have been designed using the latest technology to ensure that the water will flow effectively within the unit, allowing the ultraviolet light to destroy the algae as it passes through. It also breaks down chloramines (combined chlorine), which are a major factor in chlorine odour and bather irritation. Not only do they look very stylish, making it a fantastic addition to any pool, but it has been designed with a fully UV stabilised, tough outer casing. This means that the CUV can withstand the recommended operating pressures of 2 bar. The CUV has a low energy, electronic ballast that is positioned in a fully water tight compartment, fused with full thermal overload protection on the 55W and 110W systems. Certikin’s CUVs are built with both safety and low running costs in mind. The systems are simple to install, and are supplied with pre-fitted stainless steel mounting brackets that allow the unit to be fixed horizontally or vertically. Every unit comes complete with a two year guarantee and are compatible with salt chlorinators.
Certikin's CUV Systems are ideal
for most domestic pool applications and provide brilliant water clarity
losing visitors prior to switching to UV because of chloramines), combined with the reduction in costs for water, lost energy and chemicals, the savings have been considerable”
www.swimmingpoolnews.co.uk
When you take into account the increase in visitors we’re now getting (the pool was
GOLDEN COAST AND TRIOGEN BRING HOME THE ADVANTAGES OF UV AND OZONE DISINFECTION Golden Coast and Triogen Ltd have announced an exclusive distribution agreement for Triogen’s systems in the UK. Golden Coast’s Managing Director Jamie Adams says: “We are very keen to bring the benefits of Triogen’s technology to more pool and spa owners, particularly in the residential sector,” adding: “But while affordability is key for owners, the main benefit of switching to UV disinfection is improved water quality.” The essential principle of Triogen’s TR2 Ultra low-pressure UV disinfection systems is that they use radiation from UV lamps to inactivate the cells of undesirable organisms in the water. Medium-pressure lamps are often used for large swimming pools,
SPN August 2015 53
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