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污泥处理过程中毒害有机污染物的迁移转化规律与毒性效应 被引量:8
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作者 张伟军 张彧 潘思逸 《安全与环境工程》 CAS CSCD 北大核心 2022年第2期183-198,共16页
毒害有机污染物是影响污泥土地利用安全性的因素之一。全面总结了污泥中毒害有机污染物的提取和分析方法、毒性效应评估方法以及不同污泥处理工艺对污泥中毒害有机污染物的去除效果。结果表明:污泥中毒害有机污染物的种类超过700种,常... 毒害有机污染物是影响污泥土地利用安全性的因素之一。全面总结了污泥中毒害有机污染物的提取和分析方法、毒性效应评估方法以及不同污泥处理工艺对污泥中毒害有机污染物的去除效果。结果表明:污泥中毒害有机污染物的种类超过700种,常规的化学分析方法无法有效评估污泥的环境风险,而毒性指标(急性毒性、遗传毒性)可评估污泥的综合毒性;污泥中毒害有机污染物的提取方法主要包括索氏提取、超声萃取、快速溶剂萃取、基质固相分散萃取、微波萃取等方法;不同处理工艺对污泥中毒害有机污染物的削减和控制效率差异较大,其中好氧堆肥处理工艺在污泥中毒害有机污染物去除方面有较大的潜力,而厌氧消化和水热处理工艺对污泥中毒害有机污染物的降解效率稍低,有时还会增加污泥的毒性效应,水热处理工艺可改变污泥中毒害有机污染物的固液分配比;不同化学氧化工艺对污泥中毒害有机污染物的削减效果也有差异,其中过二硫酸盐(PDS,S_(2)O_(8)^(2-))氧化工艺对污泥具有很强的毒性削减潜力。此外,从污泥毒性效应评估体系构建、典型污泥处理过程中毒害有机污染物毒性的变化规律和污泥中关键有机毒性物质的识别等方面展望了污泥中毒害有机污染物的后续重点研究方向。 展开更多
关键词 城市污泥 土地利用 处理工艺 毒害有机污染物 迁移转化 毒性效应评估
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Exposure Level, Toxicity Effects and Health Risk Assessment of Organophosphorus Flame Retardants in Water Environment 被引量:1
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作者 WEN Xin SHEN Meng +3 位作者 HAN Hui WANG An-wei ZHAI Juan WAN Yu-shan 《Agricultural Science & Technology》 CAS 2018年第6期31-42,共12页
Organophosphorus flame retardants(OPFRs) are gradually replacing brominated flame retardants(BFRs), which are widely used in the world. The increasing output of OPFRs and the increasing detection of OPFRs in environme... Organophosphorus flame retardants(OPFRs) are gradually replacing brominated flame retardants(BFRs), which are widely used in the world. The increasing output of OPFRs and the increasing detection of OPFRs in environmental media have attracted wide attention of scholars at home and abroad. OPFRs are generally semi-volatile, easy to enter the environment and accumulate in organisms,causing potential hazards to the environment and human health. In this paper, the pollution status and toxic effects of OPFRs in aquatic environment were introduced,and the research progress of human health risk caused by them was summarized.The existing problems were pointed out, and the future research was prospected. In the future, the analytical methods of various environmental and biological media should be improved, and comprehensive and in-depth environmental investigation and ecological and health risk assessment should be carried out. Attention should be paid to the effects of combined pollution on organisms and the study of biological acceptability. 展开更多
关键词 Organophosphorus flame retardant Exposure level Toxicity effect Health risk assessment
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