我国城镇污水处理厂的污泥中含有大量营养成分，同时也含有重金属成分，对于污泥中营养成分和重金属的含量情况，汇总并分析了国内90个污水处理厂的污泥泥质数据后，得出结论：总体上城镇污水处理厂的污泥泥质是适合土地利用的，重金属风险由大到小排序为：Hg、Ni、Cd、Zn、Cu、Cr、Pb、As、B；建议在开展污泥土地利用工作的同时，应探索创新排水管理模式、污泥中重金属去除技术，以及土地利用模式。%The sludges contain a great deal nutrition elements in China urban sewage treatment plants and at the same time, contain heavy metal elements. Based on the nutrition element and heavy metal content in sludge, and after colecting and analyzing the sludge argilite data in 90 sewage treatment plants of the country, the paper comes to the conclusion: The sludge argilite in urban sewage treatment plants is adapted to land use as a whole. The heavy metal risk lists from big to smal order as Hg、Ni、Cd、Zn、Cu、Cr、Pb、As、B. The paper suggests that we should probe into and innovate the water drainage management mode and mode of heavy metal removal technique in sludge as wel as land use mode.
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