Use of multi-objective dredging for remediation of contaminated   sediments: a case study of a typical heavily polluted confluence area in   China

doi:10.1007/s11356-015-4978-5

CORC > 北京大学 > 城市与环境学院

	Use of multi-objective dredging for remediation of contaminated sediments: a case study of a typical heavily polluted confluence area in China
	Liu, Cheng ; Shao, Shiguang ; Shen, Qiushi ; Fan, Chengxin ; Zhou, Qilin ; Yin, Hongbin ; Xu, Fuliu
刊名	ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
	2015
关键词	Multi-objective plan Dredging Sediment Pollution Confluence area Lake Chaohu POLYCYCLIC AROMATIC-HYDROCARBONS POLYBROMINATED DIPHENYL ETHERS PERSISTENT ORGANIC POLLUTANTS YANGTZE-HUAIHE REGION ECOLOGICAL RISK CHAOHU LAKE SURFACE SEDIMENTS AGRICULTURAL INTENSIFICATION ESTUARINE SEDIMENTS SHALLOW LAKES
DOI	10.1007/s11356-015-4978-5
英文摘要	Sediments in confluence areas are typically contaminated by various pollutants that have been transported there by inflowing rivers. In this study, we evaluated the pollution status of a confluence area in Lake Chaohu (China). Both the nutrients and hazardous pollutants were analysed. Most sediment cores showed large variations in nutrient concentrations at depths of 10 to 18 cm. Positive release rates of NH4+-N and PO43--P were detected in sediment cores. Hg and Cd were the most typical problematic metal contaminants encountered, and their contamination levels extended to depths of 20 and 25 cm, respectively. Polycyclic aromatic hydrocarbons (mostly acenaphthene and fluorine) were the primary persistent organic pollutants (POPs) present in sediments, and contamination levels frequently could be detected up to a depth of 16 cm. Simulated dredging operations were implemented in the laboratory, with a dredging depth of 15 cm found to be suitable for nutrient suppression. With the goal of suppressing nutrients release and removing high-risk metals and POPs, a multi-objective dredging plan was developed. This plan subdivides the confluence area into five parts that were treated with different dredging depths. A demonstration area was dredged in the most heavily polluted part, and the observed dredging effects were consistent with those expected on the basis of the plan. Such an approach to dredging might also be useful in other areas in the future.; State Major Project of Water Pollution Control and Management [2012ZX07103-005]; Water Pollution Control Project of the Jiangsu Province [TH2013214]; SCI(E); PubMed; ARTICLE; cxfan@niglas.ac.cn; 22; 17839-17849; 22
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/418990]
专题	城市与环境学院
推荐引用方式 GB/T 7714	Liu, Cheng,Shao, Shiguang,Shen, Qiushi,et al. Use of multi-objective dredging for remediation of contaminated sediments: a case study of a typical heavily polluted confluence area in China[J]. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,2015.
APA	Liu, Cheng.,Shao, Shiguang.,Shen, Qiushi.,Fan, Chengxin.,Zhou, Qilin.,...&Xu, Fuliu.(2015).Use of multi-objective dredging for remediation of contaminated sediments: a case study of a typical heavily polluted confluence area in China.ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH.
MLA	Liu, Cheng,et al."Use of multi-objective dredging for remediation of contaminated sediments: a case study of a typical heavily polluted confluence area in China".ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH (2015).