J. Wyczarska-Kokot, A. Lempart, M. Dudziak
Silesian University of Technology, Institute of Water and Wastewater Engineering, Gliwice, PL

CHLORINE CONTAMINATION IN DIFFERENT POINTS OF POOL – RISK ANALYSIS FOR BATHER HEALTH


The pool water treatment and disinfection plant fulfils its task, if the hydraulic system cooperates with the appropriate pool basin geometry. Water flow through the pool can cause “dead” zones not involved in circulation. In these zones the degree of mixing the disinfectant with water can be different. In consequence, the effectiveness of inactivation of microorganisms (including pathogens) and the influence of bather health may be different. The results of physical and chemical tests of pool water samples taken from several characteristic points of the pool were presented. Attention was paid to the content of free chlorine (determining antiseptic activity) and chloramines (which causes allergies, irritation of the mucous membranes and digestive system). Based on the results of analyses of concentrations of free and combined chlorine, a map of chlorine was prepared for the pool. The study was conducted in two indoor swimming pools, differing in water flow (skim and vertical). It has been shown that water samples should be taken from several different points of the pool, selected to be representative to assess the possible risk to bather health.

Keywords: map of chlorine, pool hydraulic system, risk to bather health