| Abstrakt: |
In this study, the presence of twelve antibiotics, total cultivable bacteria and fecal coliforms were investigated in the influent and effluent in a wastewater treatment plant as well as the water from the upstream and downstream of the relevant receiving water. The twelve antibiotics were detectable in these waters except for Erythromycin, which was not detected in the receiving water. 58.17-97.35% of the antibiotics can be removed during the wastewater treatment process. Among these antibiotics, the highest concentration was detected for Cephalexin in the influents, followed by the Amoxycillin, Sulfamethoxazole and Tetacy-clines. Besides, no significant differences were found in the concentrations of these antibiotics between the upstream and downstream of the receiving river. The total cultivable bacteria and fecal coliforms in influent were higher than that in effluent in WWTP while the same items of downstream were a little higher than that of upstream. With respect to the influent, the highest resistance was found for Trimethoprin/ sulfamethoxazole (SXT), followed by Tetracycline (TET), Chloramphenicol (CHL) and Ampicillin (AMP) while the lowest resistance was Ciprofloxacin (32%). In the effluent, the highest resistance was found for SXT, followed by CHL, Erythromycin and TET. The wastewater treatment process increased the level of antibiotic resistant among the isolated fecal coliform. Consequently, the substantial concern should be paid to the multi-antibiotic resistant isolates. [ABSTRACT FROM AUTHOR] |
