Risk assessments of polybrominated diphenyl ethers (PBDEs) during sludge application in China

3rd International Conference on Advances in Energy Resources and Environment Engineering

能源学;生态环境科学

Qian, Jun^1

College of Environmental Science and Engineering, Tongji University, Shanghai

200092, China^1

关键词: Above-ground tissues;    Application in China;    Emerging organic contaminants;    Nutrient recycling;    Polybrominated diphenyl ether (PBDEs);    Sewage sludge from wastewater treatment plants;    Sludge stabilization;    Soil organic matters;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/113/1/012058/pdf
DOI  :  10.1088/1755-1315/113/1/012058

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Due to increasingly less space in municipal environment, waste management has become an urgent issue worldwide. As one of common municipal waste, sewage sludge from wastewater treatment plants (WWTPs) contains abundant nutrients, some of which can be quite essential for plant growth. In consideration of nutrient recycling and energy saving, sludge application has been frequently promoted in many countries across the world. However, even after several sludge stabilization procedures, sewage sludge may still contain a large variety of toxic pollutants, especially some emerging organic contaminants (EOCs). Applied in various household products and plastic industries as additives, polybrominated diphenyl ethers (PBDEs) have been constantly detected in sewage sludge samples from several cities in China since 2005, as well as some biosolid samples after sludge stabilization processes, suggesting their strong persistence and wide occurrence. During sludge application onto farmland soils, PBDEs may desorb from sludge particles and get attached by soil organic matter (SOM), followed by plant root uptake and translocation to aboveground tissues. In this study, data about current pollution of PBDEs in sewage sludge samples from China was reviewed, and the potential risks during sludge application was comprehensively assessed.