The concept of a technological system for the treatment and using rainwater in swimming pool installations
2025
Rafał Rapacewicz | Anna Lempart-Rapacewicz | Edyta Kudlek | Katarzyna Brukało
This study introduces and validates the “SwimmInRain” system, a technological solution for rainwater treatment in public swimming pool installations. Laboratory experiments and analytical evaluations focused on optimizing process components, with special attention to UV-based advanced oxidation. Raw rainwater often exhibited turbidity (1.67 ± 0.1 NTU) and pH (6.04 ± 0.1) values outside acceptable ranges, prompting the development of a multistage treatment system. The complete technology includes filtration, separation of petroleum substances, coagulation, mechanical filtration, UV disinfection, chlorination, and pH correction. Medium-pressure UV lamps, particularly the TQ-Z3 model, showed superior effectiveness in degrading organic micropollutants. Removal efficiency was influenced by UV dose and exposure time. Post-treatment water quality improved significantly, with total organic carbon reduced by up to 35.7 %. Combined chlorine concentrations were also minimized, indicating fewer disinfection by-products. The “SwimmInRain” system offers an environmentally sound method for reusing rainwater in swimming pools, aligning with sustainability goals and ensuring safe, cost-effective water management.
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