SCNU Environmental Research Institute, School of Environment, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou 510006, China.
Guangdong Provincial Key Laboratory of Fishery Ecology and Environment, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou 510300, China.
Bioresour Technol. 2024 Oct;410:131297. doi: 10.1016/j.biortech.2024.131297. Epub 2024 Aug 15.
Swine wastewater (SW) contains high levels of traditional pollutants, antibiotics, and antibiotic resistance genes (ARGs), necessitating effective elimination. Two parallel aerobic granular sludge (AGS) reactors, R and R, were constructed and optimized for treating SW from two pig farms, identified as SW and SW. R showed higher antibiotic removal efficiency, particularly in the removal of sulfonamides, while fluoroquinolones tended to adsorb onto the sludge. Process optimization by introducing an additional anoxic phase enhanced denitrification and reduced effluent ARG levels, also aiding in the improved removal of fluoroquinolones. The nitrite-oxidizing bacteria (NOB) Nitrospira accumulated after the treatment process, reaching 12.8 % in R and 14.1 % in R, respectively. Mantel's test revealed that pH, NH-N, and Mg significantly affected ARGs and microbial community. Sulfadiazine and sulfamethazine were found to significantly impact ARGs and the microbial communities. This study provides innovative insights into the application of AGS for the treatment of real SW.
猪废水（SW）含有高水平的传统污染物、抗生素和抗生素抗性基因（ARGs），因此需要进行有效的去除。我们构建并优化了两个平行的好氧颗粒污泥（AGS）反应器 R 和 R，用于处理来自两个养猪场的 SW，分别标记为 SW 和 SW。R 表现出更高的抗生素去除效率，特别是对磺胺类药物的去除，而氟喹诺酮类药物则倾向于吸附到污泥上。通过引入额外的缺氧相进行工艺优化，增强了反硝化作用并降低了出水 ARG 水平，也有助于改善氟喹诺酮类药物的去除效果。处理过程后，亚硝酸盐氧化菌（NOB）Nitrospira 积累，R 中的含量达到 12.8%，R 中的含量达到 14.1%。Mantel 检验表明，pH、NH-N 和 Mg 对 ARGs 和微生物群落有显著影响。磺胺嘧啶和磺胺甲噁唑被发现对 ARGs 和微生物群落有显著影响。本研究为 AGS 应用于实际 SW 的处理提供了创新性的见解。
