CRYPTOSPORIDIUM SPP FLUMEQUINA FLUMEQUINE AOPS SULFONADMIDES INACTIVATION ACTIVITY TEST WASTEWATER VETERINARY DRUG CRYPTOSPORIDIUM SSP. METABOLITES DAMAGE POA PHARMACEUTICALS ACUTE TOXICITY OZONATION FENTON REAGENT BYPRODCTS FORMATION BENZIMIDAZOLES ADVANCED OXIDATION PROCESS UHPLC-MS/MS ALBENDAZOLE CONTAMINANTS OF EMERGING CONCERN DEGRADATION GIARDIA DUODENALIS DESINFECTION PHOTOLYSIS VETERINARY DRUGS RESIDUAL TOXICITY PHOTOCATALYSIS