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首页> 外文期刊>Environmental Science & Technology >Fate, partitioning, and mass loading of polybrominated diphenyl ethers (PBDEs) during the treatment processing of municipal sewage
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Fate, partitioning, and mass loading of polybrominated diphenyl ethers (PBDEs) during the treatment processing of municipal sewage

机译：市政污水处理过程中多溴二苯醚（PBDEs）的去向，分配和质量负载

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摘要

Sewage treatment plant (STP) effluents are likely a major source of contamination for PBDEs, especially in the receiving water bodies of local aquatic environments surrounding the location of these discharges. Congeners of the pentaBDE mixture, 2,2,',4,4'-tetrabromodiphenyl ether (BDE47), 2,2,',4,4',5-pentabromodiphenyl ether (BDE99), ,2,',4,4',6-pentabromodiphenyl ether (BDE100), 2,2,',4,4',5,5'-hexabromodiphenyl ether (BDE153), and 2,2,',4,4',5,6'-hexabromodiphenyl ether (BDE154), are of great environmental concern in North America due to their persistence, potential for bioaccumulation, and > 97% use of the global production of the mixture in the region. Detailed characterization of the distribution of eight PBDE congeners (2,4,4'-tribromoDE (BDE28) and BDE47, 99, 100, 138, 153, 154, and 183) was carried out at five sites along the treatment process at an activated sludge-type secondary treatment municipal STP facility. PentaBDE mixture congeners, Sigma 5PBDE (sum of BDE47, 99, 100, 153, and 154) accounted for > 98% of the total (Sigma(8) ) PBDE concentration at all sites, with over 80% of the composition being BDE47 and BDE99. Presence of dissolved organic matter affected the mobility of PBDEs during the initial stages of the treatment process. About 9% of the influent mass of Sigma 5PBDE to the facility is estimated to be discharged into the Little River (leading to the Detroit River) with the final effluent, resulting in an estimated mass loading of similar to 0.7 kg/year. The total mass loading of Sigma 5PBDE to the Detroit River is expected to be much larger as effluent from this facility accounts for < 10% of the total STP discharges to the river.
机译：污水处理厂（STP）的废水可能是多溴二苯醚污染的主要来源，尤其是在这些排放物周围的当地水生环境的接收水体中。五溴二苯醚混合物的同类物，2,2，'，4,4'-四溴二苯醚（BDE47），2,2，'，4,4'，5-五溴二苯醚（BDE99）,, 2，'，4,4 '，6-五溴二苯醚（BDE100），2,2，'，4,4'，5,5'-六溴二苯醚（BDE153）和2,2，'，4,4'，5,6'-六溴二苯醚乙醚（BDE154）的持久性，生物积累潜力以及该地区混合物全球产量的97％以上使用，在北美引起了极大的环境关注。在活化过程中，沿处理过程的五个位置对八种多溴二苯醚同系物（2,4,4'-三溴联苯醚（BDE28）和BDE47、99、100、138、153、154和183）的分布进行了详细的表征。污泥型二级处理市政污水处理厂。五溴二苯醚混合物同类物西格玛5PBDE（BDE47、99、100、153和154的总和）占所有位点总PBDE浓度（Sigma（8））的98％以上，其中80％以上是BDE47和BDE99。在处理过程的初始阶段，溶解有机物的存在会影响多溴二苯醚的迁移。估计约有9％的Sigma 5PBDE流入设施的废水最终排放到小河（通往底特律河）中，导致估计的质量负荷约为0.7千克/年。预计到底特律河的Sigma 5PBDE的总质量负载将更大，因为该工厂的废水占该河STP排放总量的<10％。

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