UV Transforms one of New Zealand's Busiest Indoor Pools

Since installing a Hanovia UV water treatment system, the Lloyd Elsmore Park Leisure Centre in Manukau City has seen a transformation in water and air quality at its indoor leisure pool.

One of New Zealand's busiest pools, running costs at the Lloyd Elsmore Park Leisure Centre have been reduced, seeing the UV system has paying for itself in less than a year.

As Centre Manager Gary Burr comments, "we installed the Hanovia UV system to control combined chlorine (chloramines) and since installation it has been doing its job perfectly.

"Combined chlorine levels have fallen from 1.8ppm to 0.5ppm, resulting in a much improved pool environment. Visitors have really noticed the difference and we are always getting comments about how much nicer the pool is to swim in, with none of the nasty âchlorineâ smells and eye irritations normally associated with indoor pools. People find they no longer need to use eye goggles and don't smell of chlorine when they leave the pool. The water is also much clearer â transmission has shot up from 80% to 95% - from cloudy to clear.

"Other benefits include a big reduction in the amount of dilution water required. Before UV we were replacing about 600 metre3/water per week, just to keep combined chlorine levels down, and this has now fallen to virtually zero â itâs just not necessary any more. All in all, the reduction in costs for new water, discharged water, lost energy and lost chemicals is considerably lower. The UV paid for itself within less than a year, making this a doubly successful story."

Barr concluded that, "following the success of the Lloyd Elsmore Park UV installation, Manukau City Council has ordered two more Hanovia UV systems for other leisure facilities with similarly loaded indoor pools. I know for a fact that the Council has also received many more enquiries, based on the success of our installation."

The UV system unit installed at Lloyd Elsmore Park is a Hanovia medium pressure PSP UV system, which can treat up to 220 m3/hour, based on a UV dose of 60 mJ/cm2. An automatic wiper keeps the sleeve housing the UV lamp clean, so the only regular maintenance required is changing the lamp every nine to 12 months - a simple operation that is carried out by on-site staff. All Hanovia UV disinfection systems are compact and can usually be installed within existing pipework with minimal disruption.

Automatic wipers keep the quartz sleeves housing the UV lamps clean, so the only regular maintenance required is changing the lamp, a simple operation that can be done in minutes. Reduced chlorine usage also results in significant cost savings for the pool operator, as well as cutting down on chemical handling.

For more information contact Hanovia's New Zealand representative, Steve Warne of Auckland-based Davey Water Products NZ Ltd on 09 570 9135, E: swarne@dwp.co.nz, www.contam.co.nz