Biodegradation of Veterinary Antibiotics and Intermediate Products during Aerobic and Anaerobic Processes for Livestock Wastewater Treatment

  • 邱 翌竹

Student thesis: Master's Thesis


Water scarcity causes serious problems Therefore developing more water sources such as reclaimed waters are urgent Livestock wastewater accounting for 26 % of overall wastewater in Taiwan and containing high concentration of nutrient is a potential source of reclaimed water for agriculture However traditional wastewater treatments could not totally remove antibiotics contented in livestock wastewater Antibiotics discharged into environment will cause ecological damages and increase antibiotic resistances in microorganisms Two livestock wastewater treatment plants were investigated the occurrences and the removal efficiencies of antibiotics regularly Lab-scale sequencing batch reactors were built to simulate the treatment processes part of them were added with antibiotics and others were used as control group without additional antibiotics Then batch tests were conducted to assess the effects and removal mechanism of antibiotics in biological treatment process Moreover possible metabolites during biological process would be confirmed by LC-MS/MS In this study the adsorption behavior and biodegradation of lincomycin (LCM) tylosin (TYL) and erythromycin (ERY) were investigated The biotic and abiotic behaviors of tetracycline (TC) oxytetracycline (OTC) chlortetracycline (CTC) sulfadiazine (SDZ) sulfathiazole (STZ) sulfamerazine (SMR) and sulfamethoxazole (SMX) were summarized and discussed The results of batch tests showed that tetracyclines were largely affected by wastewater and sludge while LCM TYL ERY and STZ were slightly affected and the interaction of SDZ SMR and SMX with wastewater matrix could be neglected Moreover TYL ERY and SMX had anaerobic biodegradation potential There were no aerobic biodegradation potential for tetracycline antibiotics and no anaerobic biodegradation potential for LCM Furthermore there were two intermediate products at m/z 734 for ERY and two intermediate products at m/z 212 and 254 for SMX found in anaerobic condition Overall this study could help to clarify the fate and behavior of ten antibiotics in the aerobic and anaerobic process
Date of Award2016 Aug 11
Original languageEnglish
SupervisorWan-Ru Chen (Supervisor)

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