Several bestUV systems were installed in one of the latest new-built aquaparcs in Europe. The new constructed aquaparc is officially opened in the begin of 2012.
Dutch manufacturer bestUV, leading in UV units for swimming pools, was selected by the contractors because of its wide range of references, proven effects and high quality products with lowest operational cost.
In the new-built aquaparc the bestUV units are used in:
- 25m pool
- 50m Olympic swimming pool
- toddlers pool
- recreation pool
- salt water pool
All pools are equipped with bestUV systems including specially developped bestUV lamps, UV sensor technology and cleaning device to prevent fouling of quartz sleeves.
Salt water pool
Especially the UV unit for the ‘salt water pool’ is confirming again the innovative strength of bestUV. The salty pool water is highly corrosive to the material normally used in pool water. After many years of testing in comparable situations, bestUV is able to provide a high quality low-cost solution for UV pool units, resistant to highly corrosive warm salt water.
The bestUV systems are following the new draft (May 2011) of the German DIN 19643-2:2011-05 chapter 4.5.5. The DIN allows the use of specific medium-pressure UV lamps only.
Ultraviolet (UV) light has become widely accepted as an alternative to chemical disinfection (e.g. chlorination) of water. Although it is believed that all UV lamps (LP and MP) act the same, there are reasons to assume that both lamp technologies act differently. These different effects are thoroughly studied in practise and in science.
This document describes the background of different actions on micro-organisms by the two major lamp technologies:
- low-pressure UV lamp (LP)
- medium-pressure UV lamp (MP)
The document is very interesting, especially for applications where water is exposed to visible (sun)light ater UV-treatment, such as:
- communal waste water (after discharging)
- ship’s ballast water (after deballasting)
It is concluded that the broad-spectrum of wavelenghts, emitted by medium-pressure (MP) UV-lamps, result in multiple effects on the microbiological cell. These effects are especially of interest with regard to the theme of ‘photorepair after UV-treatment’. Photorepair can take place immediately after exposure to visible (sun)light. This is an issue when water is discharged into ‘open waters’ like river, lake and/or sea. The conclusion of the studies is that medium-pressure (MP) lamps are favoured to prevent repair of the UV-exposed cell.
To download the complete document as PDF click the link below.
Comparison of microbiological effects between LP and MP lamps (2012)