A^2/O-膜生物反应器组合工艺去除典型内分泌干扰物的特性研究  

Removal characteristics of typical EDCs in A^2/O-MBR process

作　　者：吴春英[1,2] 白鹭[1] 谷风[1] 陆文龙[1] 

机构地区：[1]吉林化工学院资源与环境工程学院,吉林吉林132022 [2]清华大学环境学院,环境模拟与污染控制国家重点联合实验室,北京100084

出　　处：《环境污染与防治》2017年第3期254-257,共4页Environmental Pollution & Control

基　　金：中国博士后科学基金项目(No.20080440374);吉林市科技创新发展计划项目(No.20163301)

摘　　要：以环境水体中21种典型内分泌干扰物(EDCs)为目标物,对其在某城市污水处理厂A^2/O—膜生物反应器(MBR)组合工艺中的去除特性和行为归趋进行了长期研究。结果表明:21种EDCs在该组合工艺进水中,己烷雌酚(HES)质量浓度最小(4.6ng/L),双酚A(BPA)质量浓度最大(219.1 ng/L);出水中HES质量浓度最小(0.2 ng/L),BPA质量浓度最大(6.7 ng/L)。该组合工艺对21种EDCs有很强的去除能力,除己烯雌酚(DES)、双烯雌酚(DIES)、壬基酚(4-n-NP)和辛基酚(4-OP)的去除率分别为85.1%、84.9%、77.1%、75.8%外,其余EDCs的去除率均在95%以上。EDCs在A^2/O—MBR组合工艺中泥水两相的迁移行为可用泥-水分配系数(Kd)表征,21种EDCs的Kd均较高,表明污泥对EDCs有一定的吸附作用,大部分EDCs是通过污泥吸附去除。Removal characteristics and behavior of 21 typical endocrine disrupting compounds（ EDCs） in A^2/O-membrane bioreactor（ MBR） combined process were investigated in a municipal treatment plant. The concentrations of EDCs ranged from 4. 6 ng/L（ HES） to 219. 1 ng/L（ BPA） in the influent,and from 0. 2 ng/L（ HES） to 6. 7 ng/L（ BPA） in the effluent. These results indicated the removal performance of A^2/O-MBR combined process for EDCs was excellent. The removal efficiencies of EDCs reached above 95%,except for DES（ 85. 1%）,DIES（ 84. 9%）,4-n-NP（ 77. 1%） and 4-OP（ 75. 8%）. The migration behavior of EDCs in the A^2/O-MBR combined process was characterized by soid-water distribution coefficient（ Kd）. The high Kdvalues indicated that the sludge had a large adsorption capacity for these EDCs,and significantly contributed to removal of EDCs.

关 键 词：内分泌干扰物 A^2/O—MBR 污泥吸附 去除特性 

分 类 号：X703[环境科学与工程—环境工程]