Purpose: To determine the ability of the Hanovia UVP 61 water disinfection system to

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Courtesy of Hanovia Ltd - a Halma Company

Disinfection of public swimming pools and water amenities is essential to maintain safe and attractive bathing conditions. The challenge today is to provide water conditions free of irritants and after effects and smell. Customers expect clear, odour free, high quality water. Chlorine disinfection is the most common means of providing such protection. However, chlorine chemistry is complex and such treatment usually results in the formation of chloramine compounds when the chlorine reacts with ammonia (from nitrogenous contaminants introduced by bathers). It is the chloramines which are responsible for many of the undesirable characteristics of chlorinated pool systems. The use of UV to complement chlorine treatment allows a significant reduction in chemical usage as the UV prolongs and enhances the effectiveness of the initial dose. It also accelerates the oxidation of the chloramine intermediates, converting combined chlorine to free chlorine, and in turn reducing the additional chlorine dose that would otherwise be required to maintain safe levels of disinfection. In short, UV allows a much higher water quality to be maintained through the enhanced effectiveness of lower chemical disinfection doses.

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