Deposited Sediment Dredging to Reduce Internal Pollutant Loading for a Waterfront Shallow Lake in Zhenjiang of China

Abstract:

Due to the geographical location, sediment deposition resulted in a heavy internal pollutant loading and destroied the ecological system in Neijiang, a typical waterfront shallow lake. Based on the field investigation and laboratory experiment the characteristics of deposited sediments including deposition thickness, pollutant contents and pollutant release intensity were analyzed and then the sediment dredging schemes for Neijiang were proposed. Finally the impacts of sediment dredging on internal pollutant loading were quantificationally evaluated. It was found that:(1) the deposition thickness, pollutant contents and release intensity of sediments in Neijiang were all distibuted asymmetrically; (2) sediment dredging significantly decreased the basal elevation of Neijiang and cut down the internal pollutant sources by removing the surface contaminated sediments; (3) After dredging the internal pollutant loading under different hydrological conditions in Neijiang was evidently reduced.

• Periodical: Advanced Materials Research (Volumes 356-360)
• Pages: 1170-1174
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.356-360.1170
• Online since: October 2011
• Authors: Hua Wang, Yong Pang
• Keywords: Deposited Sediment, Dredging, Internal Pollutant Loading, Neijiang, Waterfront

References

[1] J.C. Li, J.D. Chu and H. L.Feng:Resources and Environment in the Yangtze Basin Vol. 11(2)(2002),p.137(In Chinese)

[2] G.Wilhelm, Hydrobiologia Vol. 228(1999), p.95

[3] K.J. Garber and R.T. Hartman: Hydrobiologia Vol.122(1985), p.45

[4] M. Søndergaard,P. Kristensen and E. Jeppesen: Hydrobiologia Vol. 228(1992), p.91

[5] K. Ogiwara and K. Morgi: Proceedings of 6th International Conference on the Conservation & Management of Lakes-Kasumigaura 1995, p.438

[6] D.Vander: Hydrobiologia Vol. 233(1992), p.197

[7] H. Wang, Y. Pang and F. Xie: Journal of Safety and Environment Vol. 7(3), p.62(In Chinese)

[8] X. R. Huang, W. M. Chen and Q. M. Cai: Standard Press of China Vol. 28(1999), p.45(In Chinese)

[9] H.Wang and Y.Pang: Water Environment Research Vol. 81(12)(2009), p.2437

[10] M. Desprez: ICES Journal of Marine Science Vol. 57(2000), p.1428

[11] J. E. Ruley and K.A. Rusch: Ecological Engineering Vol. 19(2002), p.265

[12] J.Eggleton and K.V. Thomas: Environment international Vol.30(2004), p.973