Removal of polybrominated diphenyl ethers in various buildings of sewage treatment plant

doi:10.3969/j.issn.1000-1565.2020.02.005

Abstract

Abstract: Taking Baoding sewage-treatment plants research object,the sewage and biological sludge in the various buildings of the sewage-treatment plant were collected in the summer and winter.After the collected samples were extracted,purified and determined,10 congeners of PBDEs were detected in these samples by GC and GC-MS.Through comparison of PBDEs concentration in the sewage and sludge from two seasons(in summer and winter),the distribution,migration and transformation of PBDEs and factors influencing the removal of PBDEs were discussed.The results showed that: 1)The concentrations of PBDEs in sewage(inlet to outlet)ranged from 43.2 to 315.8 ng/L,and the concentrations of sludge in bioreactor were between 2 361.1 and 3 186.0 ng/g in summer;in contrast with summer,in winter the concentrations of PBDEs in sewage(inlet to outlet)and sludge ranged from 108.1 to 403.5 ng/L,and 2 247.8 to 2 782.7 ng/g,- DOI:10.3969/j.issn.1000-1565.2020.02.005污水处理厂各构筑物中多溴联苯醚的去除何增浩,王晓冰,刘芃岩,巩一潮,朱爱雪,牛玥(河北大学化学与环境科学学院,河北保定 071002)摘要:以保定污水处理厂为研究对象,分别采集了夏、冬两季污水处理厂内各个构筑物中的污水及生物反应池中的污泥样本,通过萃取、净化和浓缩后,利用GC和GC-MS检测出10种多溴联苯醚(PBDEs),通过对水、泥以及夏、冬两季各构筑物中PBDEs含量比较,探讨了PBDEs的分布、迁移转化规律及去除PBDEs的影响因素.结果表明:1)夏季污水中(进水-出水)PBDEs的质量浓度为43.2~315.8 ng/L,生物反应池中的污泥样品质量分数为2 361.1~3 186.0 ng/g;冬季污水中(进水-出水)PBDEs的质量浓度为108.1~403.5 ng/L,生物反应池中的污泥样品质量分数为2 247.8~2 782.7 ng/g.2)初沉池(夏季53.55%,冬季38.19%)和生物反应池(夏季51.13%,冬季36.61%)中PBDEs的去除效率最高;夏季(86.30%)比冬季(73.22%)污水中的PBDEs去除效率略高.3)构筑物中BDE-209是主导同类物,BDE-100和BDE-99则是仅次于BDE-209的另外2种主要同类物.该研究结果为监控和评估污水处理厂的PBDEs及其他持久性有机污染物的去除效率提供参考.关键词:多溴联苯醚;污水处理厂;迁移转化;污泥中图分类号:X832 文献标志码:A 文章编号:1000-1565(2020)02-0137-07Removal of polybrominated diphenyl ethers in various buildings of sewage treatment plantHE Zenghao,WANG Xiaobing,LIU Pengyan,GONG Yichao,ZHU Aixue,NIU Yue(College of Chemistry and Environmental Science,Hebei University,Baoding 071002,China)Abstract: Taking Baoding sewage-treatment plants research object,the sewage and biological sludge in the various buildings of the sewage-treatment plant were collected in the summer and winter.After the collected samples were extracted,purified and determined,10 congeners of PBDEs were detected in these samples by GC and GC-MS.Through comparison of PBDEs concentration in the sewage and sludge from two seasons(in summer and winter),the distribution,migration and transformation of PBDEs and factors influencing the removal of PBDEs were discussed.The results showed that: 1)The concentrations of PBDEs in sewage(inlet to outlet)ranged from 43.2 to 315.8 ng/L,and the concentrations of sludge in bioreactor were between 2 361.1 and 3 186.0 ng/g in summer;in contrast with summer,in winter the concentrations of PBDEs in sewage(inlet to outlet)and sludge ranged from 108.1 to 403.5 ng/L,and 2 247.8 to 2 782.7 ng/g,- 收稿日期:2019-07-21 基金项目:国家自然科学基金资助项目(21377033);河北省自然科学基金资助项目(B2018201224) 第一作者:何增浩(1995—),男,河北邢台人,河北大学在读硕士研究生,主要从事持久性有机污染物迁移转化研究.E-mail:949594564@qq.com 通信作者:刘芃岩(1964—),女,河北保定人,河北大学教授,主要从事环境中典型污染物的生成降解与迁移转化研究.E-mail:hbupyliu@163.com第2期何增浩等:污水处理厂各构筑物中多溴联苯醚的去除respectively.2)The removal efficiencies of PBDEs were higher in the primary sedimentation tank(summer: 53.55%,winter: 38.19%)and the bioreactor tank(summer: 51.13%,winter: 36.61%)than that of other buildings;The removal efficiency of PBDEs in sewage was slightly higher in summer(86.30%)than in winter(73.22%).3)BDE-209 was the dominant congener in the building followed by BDE-100 and BDE-99.The results of this study provide a reference for monitoring and evaluating the removal efficiency of PBDEs and other POPs in sewage-treatment plants.

Key words: polybrominated diphenyl ethers, sewage treatment plant, migration conversion, sludge

CLC Number:

X832

HE Zenghao,WANG Xiaobing,LIU Pengyan,GONG Yichao,ZHU Aixue,NIU Yue. Removal of polybrominated diphenyl ethers in various buildings of sewage treatment plant[J]. Journal of Hebei University (Natural Science Edition), 2020, 40(2): 137-143.

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