Water Treatment THE PURPOSE OF A FILTRATION SYSTEM IN POSTHARVEST FRUIT MANAGEMENT PARAMETERS TO BE CONSIDERED PARAMETERS TO BE CONSIDERED THE PERFORMANCE REFERENCES STERILIZATION UV – BACTERIOLOGICAL CONTROL MULTILEVEL FILTER: THE PERKEO-SERIES – VERSIONS ROTATION FILTER: COARSE DEBRIS EXTRACTION – DEFOLIATION WITH LEONARDO SEDIMENTATION – FLOCCULATION OF SLUDGE