污水处理厂汞的赋存形态及迁移转化研究进展

摘要

汞是造成环境污染的重金属元素之一，其特殊的物理化学性质和强的毒性，已引起全球关注。针对目前污水处理厂汞的来源以及国内研究现状，通过分析汞在污水处理厂的迁移转化规律以及在城市污泥中的赋存形态，探索并制定了合理的污泥处理与调控措施，降低污泥在土地利用中存在的重金属环境风险，并结合污泥中汞的赋存特征，讨论了污泥土地应用的环境风险，为污泥土地利用提供信息指导。%Mercury is one of the heavy metals that give rise to environmental pollution, due to its special physicochemical property and extreme toxicity, it has raised global attention. The progress on the emission sources of mercury to the sewage treatment plant and the research situation was reviewed. The transformation of mercury in sewage treatment plant and the speciation of mercury in sewage sludge were also analyzed. Finally, according to the occurrence of mercury in sewage sludge, the environmental risk of sludge land utilization was discussed.