孙丽华;梅筱禹;高呈;冯萃敏;

• 1:北京建筑大学城市雨水系统与水环境教育部重点试验室
• 2:北京建筑大学环境与能源工程学院
• 3:北京市市政工程设计研究总院有限公司

摘要(Abstract)：

针对污水处理厂二级出水开展深度处理研究，采用纳米铁(nFe)活化过硫酸盐(PS)-超滤(UF)组合工艺去除二级出水中抗生素抗性基因(ARGs)和有机物，并探究pH值和温度对ARGs去除率的影响。结果表明，与直接UF和PS-UF工艺相比，nFe/PS-UF组合工艺对二级出水中ARGs、int I1及16S rRNA的去除效果最佳，对数削减量为2.51～3.52;二级出水中游离态ARGs比细胞态ARGs含量高，nFe/PS-UF组合工艺对细胞态和游离态ARGs去除效果优于直接UF和PS-UF组合工艺，其对细胞态和游离态ARGs的对数削减量分别为2.91～3.82和2.35～3.42;组合工艺对溶解性有机碳(DOC)和不同类型有机物的去除效果最好。其中DOC的去除率为30.0%,酪氨酸类、色氨酸类、富里酸类和腐殖酸类有机物去除率分别为84.5%、81.3%、81.1%和45.5%,且水中DOC含量与不同种类ARGs浓度有显著相关性。pH值和温度对组合工艺去除二级出水中ARGs有显著影响，pH值降低和温度升高有利于提高组合工艺对ARGs的去除效果。

关键词(KeyWords)： 环境工程学;抗性基因;过硫酸盐;纳米铁;超滤;自由基

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(52070011)

作者(Authors): 孙丽华;梅筱禹;高呈;冯萃敏;

DOI: 10.13637/j.issn.1009-6094.2021.0174

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