Affordable Access

Publisher Website

Occurrence and removal of antibiotics in a municipal wastewater reclamation plant in Beijing, China

Authors
Journal
Chemosphere
0045-6535
Publisher
Elsevier
Volume
92
Issue
4
Identifiers
DOI: 10.1016/j.chemosphere.2013.01.040
Keywords
  • Antibiotics
  • Quinolones
  • Sulfonamides
  • Macrolides
  • Wastewater Reclamation Plant

Abstract

Abstract In this study, we investigated the occurrences and fates of eight quinolones (QNs), nine sulfonamides (SAs), and five macrolides (MCs) in a wastewater reclamation plant (WRP) in Beijing, China. Among all the 22 antibiotics considered, quinolones were the dominant antibiotics in all samples (4916ngL−1 in influents, 1869ngL−1 in secondary effluents, 123ngL−1 in tertiary effluents, and 9200μgkg−1 in sludge samples), followed by sulfonamides (2961ngL−1 in influents, 1053ngL−1 in secondary effluents, 25.9ngL−1 in tertiary effluents, and 63.7μgkg−1 in sludge samples) and macrolides (365ngL−1 in influents, 353ngL−1 in secondary effluents, 24.7ngL−1 in tertiary effluents, and 32.7μgkg−1 in sludge samples). The removal efficiencies of the target antibiotics were limited (−32 to 78%) in the conventional treatment. This study indicated that quinolones were mainly removed from the secondary clarifier, and sulfonamides were degraded in the oxic tank; while macrolides were considered as persistent during the conventional treatment. After the advance treatment, the target antibiotics could be effectively removed at high rates (85–100%), and the risks of antibiotic contamination significantly decreased. However, risk assessment showed that the risk of ofloxacin and erythromycin on organisms in recycled water needed further investigations.

There are no comments yet on this publication. Be the first to share your thoughts.