LAUSR

The main objective of this research was to determine the possibility of using the highly ozonated water for the pre-ozonation process as a complementary process to the conventional pool water treatment method. In the tested facility, contamination with P. aeruginosa, accompanying over-normative colony-forming unit of total number of bacteria and a high content of combined chlorine (>0.3 mg Cl2/L in pool water and >0.2 mg Cl2/L in circulating water) and chloroform, was a basic problem related to water quality that caused the swimming pools to be excluded from an operation on several occasions. The research was divided into three parts. In each part, the quality of pool water was assessed in relation to the applicable requirements in this respect. In the first part, the quality of water treated in a conventional system was evaluated. In the second part, a mobile system for the production and dosage of highly ozonated water (SPID-WOFIL®) was included in the water treatment system (before the proper filtration system). In this part, several preliminary tasks were performed in order to prepare the ozonation system for operation on an everyday basis. In the third part, a sequential water pre-ozonation process was established. As a result of the pre-ozonation process (0.3–0.6 mg O3/L dose), protection against microbiological water contamination and reduction of the content of selected DBP (chloramines: 12%–48%, trihalomethane: 35%–71%, and chloroform 4%–96%) was achieved.