Removal of Sulfonamide Resistance Genes in Fishery Reclamation Mining Subsidence Area by Zeolite.

A majority of subsidence lakes were reclaimed as fish ponds, but the widespread use of antibiotics has caused the pollution of antibiotic resistance genes (ARGs). This paper uses zeolite as a filter material to construct a horizontal submersible wastewater treatment device and explores its effect on the removal of conventional pollutants and sulfonamide ARGs in wastewater. The results showed that the removal of total nitrogen and ammonia nitrogen by the zeolite filter media were 59.0% and 63.8%, respectively, which were higher than the removal of total phosphorus and COD. The absolute abundances of and in wastewater were 2.81 × 10 copies·L and 2.42 × 10 copies·L. On average, 60.62% of and 75.84% of can be removed, and more than 90% of and can be removed. Experiments showed that the residence time of wastewater in the treatment device had a significant impact on removal. The microbial community structure of aquaculture wastewater was quite different before and after wastewater treatment. The abundance changes of and affect the removal of sulfonamide ARGs.