摘要
一般认为,污泥中重金属对植物和土壤的潜在危害是阻碍污泥资源化特别是阻碍污泥农用的障碍。通过总结国内外研究结果,认为污泥中重金属的危害性与其形态有关,且不同重金属的不同形态对于不同植物和土壤的危害程度也不可一概而论,因此以污泥中重金属总量判断危害程度是不全面的。研究认为,通过对污泥重金属的预处理,以及对污泥施用后的土壤采取必要的修复措施,可进一步降低污泥重金属对环境的危害。
Obstacle of sludge recycling, especially sludge agricultural application, was thought as the potential hazard of heavy metal to plants and soil. Research results previously show that how serious the hazard is depends on the form of heavy metal. Hazards with different heavy metal and different metal form, even effect on different plants and soil are not the same. Research results also show that pretreatment on sludge heavy metal and taking essential measures on polluted soil can reduce the heavy metal hazard to environment.
出处
《净水技术》
CAS
2013年第5期53-57,共5页
Water Purification Technology
关键词
农用市政污泥
重金属危害
重金属形态
预处理
sewage sludge for agricuhural utilization heavy metal hazard heavy metal form pretreatment
