Istraživanjem na hidrauličkom fizikalnom modelu provedena je optimizacija procesa ispiranja brzih filtara u postrojenjima za kondicioniranje vode. Optimalizacija u smislu određivanja minimalnog vremena potrebnog za cjelokupni proces ispiranja pri kome stabilnost podnica neće biti ugrožena, a odnošanje filtarskog materijala će biti minimalno. Rezultati mjerenja na hidrauličkom fizikalnom modelu uspoređeni su s rezultatima mjerenja u filtarskom polju na stvarnom uređaju.The rinsing process optimization for rapid filters of water conditioning plants was conducted by means of an appropriate hydraulic physical model testing. The optimization was aimed at defining the minimum time needed to complete the entire rinsing process without damaging the floor stability, and with a minimum loss of filtering material. The hydraulic physical model test results were compared with measurement results obtained at the filtering field on a real-size device