PMID- 26162442
OWN - NLM
STAT- MEDLINE
DCOM- 20160701
LR  - 20181202
IS  - 1614-7499 (Electronic)
IS  - 0944-1344 (Linking)
VI  - 22
IP  - 22
DP  - 2015 Nov
TI  - Use of multi-objective dredging for remediation of contaminated sediments: a case 
      study of a typical heavily polluted confluence area in China.
PG  - 17839-49
LID - 10.1007/s11356-015-4978-5 [doi]
AB  - 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 PO4(3-)-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.
FAU - Liu, Cheng
AU  - Liu C
AD  - State Key Laboratory of Lake Science and Environment, Nanjing Institute of 
      Geography and Limnology, Chinese Academy of Sciences, Nanjing, 210008, People's 
      Republic of China.
AD  - University of Chinese Academy of Sciences, Beijing, 100049, People's Republic of 
      China.
FAU - Shao, Shiguang
AU  - Shao S
AD  - College of Hydrology and Water Resources, Hohai University, Nanjing, 210098, 
      People's Republic of China.
FAU - Shen, Qiushi
AU  - Shen Q
AD  - State Key Laboratory of Lake Science and Environment, Nanjing Institute of 
      Geography and Limnology, Chinese Academy of Sciences, Nanjing, 210008, People's 
      Republic of China.
FAU - Fan, Chengxin
AU  - Fan C
AD  - State Key Laboratory of Lake Science and Environment, Nanjing Institute of 
      Geography and Limnology, Chinese Academy of Sciences, Nanjing, 210008, People's 
      Republic of China. cxfan@niglas.ac.cn.
FAU - Zhou, Qilin
AU  - Zhou Q
AD  - State Key Laboratory of Lake Science and Environment, Nanjing Institute of 
      Geography and Limnology, Chinese Academy of Sciences, Nanjing, 210008, People's 
      Republic of China.
AD  - University of Chinese Academy of Sciences, Beijing, 100049, People's Republic of 
      China.
FAU - Yin, Hongbin
AU  - Yin H
AD  - State Key Laboratory of Lake Science and Environment, Nanjing Institute of 
      Geography and Limnology, Chinese Academy of Sciences, Nanjing, 210008, People's 
      Republic of China.
FAU - Xu, Fuliu
AU  - Xu F
AD  - MOE Laboratory for Earth Surface Processes, College of Urban and Environmental 
      Sciences, Peking University, Beijing, 100871, People's Republic of China.
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20150712
PL  - Germany
TA  - Environ Sci Pollut Res Int
JT  - Environmental science and pollution research international
JID - 9441769
RN  - 0 (Hazardous Substances)
RN  - 0 (Polycyclic Aromatic Hydrocarbons)
RN  - 0 (Water Pollutants, Chemical)
SB  - IM
MH  - China
MH  - Environmental Monitoring/*methods
MH  - Environmental Restoration and Remediation/*methods
MH  - Geologic Sediments/*analysis
MH  - Hazardous Substances/*analysis
MH  - Lakes/chemistry
MH  - Polycyclic Aromatic Hydrocarbons/*analysis
MH  - Rivers/chemistry
MH  - Water Pollutants, Chemical/*analysis
OTO - NOTNLM
OT  - Confluence area
OT  - Dredging
OT  - Lake Chaohu
OT  - Multi-objective plan
OT  - Pollution
OT  - Sediment
EDAT- 2015/07/15 06:00
MHDA- 2016/07/02 06:00
CRDT- 2015/07/12 06:00
PHST- 2015/03/25 00:00 [received]
PHST- 2015/06/29 00:00 [accepted]
PHST- 2015/07/12 06:00 [entrez]
PHST- 2015/07/15 06:00 [pubmed]
PHST- 2016/07/02 06:00 [medline]
AID - 10.1007/s11356-015-4978-5 [pii]
AID - 10.1007/s11356-015-4978-5 [doi]
PST - ppublish
SO  - Environ Sci Pollut Res Int. 2015 Nov;22(22):17839-49. doi: 
      10.1007/s11356-015-4978-5. Epub 2015 Jul 12.