Current status and developing trends of the contents of heavy metals in sewage sludges in China
文献类型：SCI/SSCI论文
| 作者 | Yang J.; Lei M.; Gao D. |
| 发表日期 | 2014 |
| 关键词 | sewage sludge heavy metals temporal variation national survey environmental policies polycyclic aromatic-hydrocarbons waste-water trace-metals soils municipal urban availability quality impact land |
| 英文摘要 | It is essential to determine the heavy metal concentrations in sewage sludge to select appropriate disposal methods. We conducted a national survey of heavy metal concentrations of sewage sludge samples from 107 municipal sewage treatment plants located in 48 cities covering the 31 provinces and autonomous regions, as well as Hong Kong, Macao and Taiwan by Xinjiang Production and Construction Corps in 2006, and identified the temporal trends of heavy metal contents in sewage sludge by comparison with surveys conducted in 1994-2001. In 2006, the average concentrations of As, Cd, Cr, Cu, Hg, Ni, Pb, and Zn in sewage sludge were 20.2, 1.97, 93.1, 218.8, 2.13, 48.7, 72.3, and 1058 mg.kg(-1), respectively. Because of the decreased discharge of heavy metals into industrial wastewater in China and the increasingly stringent regulations governing the content of industrial wastes entering sewers, the average concentrations of Cd, Cr, Cu, Hg, Ni, Pb, and Zn have decreased by 32.3%, 49.7%, 54.9%, 25.0%, 37.2%, 44.8%, and 27.0%, respectively, during the past 12 years. The concentrations of Cd, Cr, Cu, Ni, and Zn in the samples exceeded the heavy metal limits of the Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant in China (GB 18918-2002) by 6.5%, 3.7%, 6.5%, 6.5%, and 11.2%, respectively. From these results, 85 of the 107 municipal sludges analyzed would be considered suitable for land application. |
| 出处 | Frontiers of Environmental Science & Engineering |
| 卷 | 8 |
| 期 | 5 |
| 页 | 719-728 |
| 收录类别 | SCI |
| 语种 | 英语 |
| ISSN号 | 2095-2201 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/29466]  |
| 专题 | 地理科学与资源研究所_历年回溯文献 |
| 推荐引用方式 GB/T 7714 | Yang J.,Lei M.,Gao D.. Current status and developing trends of the contents of heavy metals in sewage sludges in China. 2014. |
入库方式： OAI收割
来源：地理科学与资源研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。