摘要
      畜禽养殖废水是抗生素抗性基因（ARGs）和抗生素残留的主要来源，也是微塑料（MP）的潜在来源。在这项工作中，建立了一个由改进的溶解空气浮选（MDAF）和自激振荡脉冲空化冲击（SOPC）工艺组成的新系统，以探索ARGs、抗生素和MPs的去除性能。聚二甲基二烯丙基氯化铵（PDAC）在MDAF中表现出比十六烷基三甲基溴化铵（CTAB）更好的性能。在0.4MPa的饱和压力和0.8mg/L的PDAC下，MDAF去除了88.3%的MP。在SOPC治疗过程中，97%以上的抗生素和100%的ARGs被去除，99.2%的抗生素被联合系统去除。SOPC可以在宽pH范围内稳定地产生羟基自由基（•OH），而无需额外的化学物质。这项研究表明，混合系统有潜力应用于含有ARGs和MP的废水的深度处理。
Abstract
Livestock and poultry breeding wastewater is a major reservoir of antibiotic resistance genes (ARGs) and antibiotics residues, and it is also a potential reservoir of microplastics (MPs). In this work, a novel system consisting of modified dissolved air flotation (MDAF) and self-excited oscillating pulsed cavitation-impinging (SOPC) processes was established to explore the removal performance of ARGs, antibiotics and MPs. Polydimethyldiallyl ammonium chloride (PDAC) showed better performance than cetyltrimethylammonium bromide (CTAB) in MDAF. At a saturation pressure of 0.4 MPa and 0.8 mg/L of PDAC, 88.3% of MPs was removed by MDAF. More than 97% of antibiotics and 100% ARGs were removed during the SOPC treatment, and 99.2% of antibiotics were removed by the combined system. The SOPC can stably generate hydroxyl radicals (•OH) in wide pH ranges without additional chemicals. This study demonstrates that the hybrid system has the potential to be applied for the advanced treatment of wastewater containing ARGs and MPs.

https://www.sciencedirect.com/science/article/pii/S277241662200095X