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湖泊科学  2012 

湖泊底泥疏浚对沉积物再悬浮及营养盐负荷影响的模拟

DOI: 10.18307/2012.0105

Keywords: 底泥疏浚,再悬浮,营养盐负荷,太湖

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Abstract:

选取太湖梅梁湾污染底泥为研究对象,利用沉积物再悬浮发生装置,通过室内模拟实验研究太湖夏季常规风情下底泥疏浚对沉积物再悬浮及上覆水营养盐动态变化的影响.结果表明,在模拟的风情扰动过程结束时(5h),扰动过程未疏浚与疏浚处理水柱总悬浮颗粒物(TSS)含量变化差异显著,未疏浚对照水柱TSS含量是初始值的7.7倍,而疏浚水柱TSS在第2h达到峰值,为初始值的3.8倍;未疏浚水柱TSS含量沉降过程最初1h迅速降低了84.0%,而疏浚水柱TSS含量在沉降3h后趋于平衡.伴随着沉积物的再悬浮过程,疏浚与未疏浚对照水柱中TP含量均在第5h达到最大,分别增加负荷78.6和92.2mg/m2.就短时效而言,底泥疏浚后沉积物的再悬浮过程显著受到抑制,并能够显著地减小沉积物再悬浮过程中溶解性磷酸盐的释放;但对水柱中总磷、总氮、铵氮、硝酸盐和亚硝酸盐含量变化影响较小.

References

[1]  张路,朱广伟,罗潋葱等. 风浪作用下太湖梅梁湾水体磷负荷变化及与水体氧化还原特征关系. 中国科学:D 辑,2005,35(增刊Ⅱ):138-144.
[2]  Murphy TP,Lawson A,kumagai M et al. Review of emerging issues in sediment treatment. Aquat Ecosyst Health Manage, 1999,2:419-434.
[3]  S?ndergaard M,Kristensen P,Jeppesen E. Phosphorus release from resuspended sediment in the shallow and wind-exposed Lake Arreso,Denmark. Hydrobiologia,1992,228:91-99.
[4]  濮培民,王国祥,胡春华等. 底泥疏浚能控制湖泊富营养化吗? 湖泊科学,2000,12(3):269-278.
[5]  Fan CX,Zhang L,Wang JJ et al. Processes and mechanism of effects of sludge dredging on internal source release in lakes. Chinese Science Bulletin,2004,49(17):1853-1859.
[6]  Reddy KR,Fisher MM,Wang Y et al. Potential effects of sediment dredging on internal phosphorus loading in a shallow, subtropical lake. Lake and Reservoir Management,2007,23:27-38.
[7]  Graca B,Burska D,Matuszewska K. The impact of dredging deep pits on organic matter decomposition in sediments. Water Air and Soil Pollution,2004,158:237-259.
[8]  Wang XY,Jiang F. Assessment of the effectiveness of environmental dredging in South Lake,China. Environmental Management, 2007,40:314-322.
[9]  尤本胜,王同成,范成新等. 太湖草型湖区沉积物再悬浮对水体营养盐的影响. 环境科学,2008,29(1):26-31.
[10]  金相灿,屠清瑛. 湖泊富营养化调查规范:第2版. 北京:中国环境科学出版社,1990.
[11]  Ruban V,López-Sánchez JF,Pardo P et al. Selection and evaluation of sequential extraction procedures for the determination of phosphorus forms in lake sediment. Journal of Environmental Monitoring,1999,(1):51-56.
[12]  Spencer KL,Dewhurst RE,Penna P et al. Potential impacts of water injection dredging on water quality and ecotoxicity in Limehouse Basin,River Thames,SE England,UK. Chemosphere,2006,63:509-521.
[13]  Je CH,Hayes DF,Kim KS. Simulation of resuspended sediments resulting from dredging operations by a numerical flocculent transport model. Chemosphere,2007,70:187-195.
[14]  尤本胜,王同成,范成新等. 风浪作用下太湖草型湖区水体N、P 动态负荷模拟. 中国环境科学,2008,28(1):33-38.
[15]  钟继承,刘国锋,范成新等. 湖泊底泥疏浚环境效应:Ⅳ. 对沉积物微生物活性与群落功能多样性的影响及其意义. 湖泊科学,2010,22(1):21-28.
[16]  孙小静,秦伯强,朱广伟等. 风浪对太湖水体胶体态营养盐和浮游植物的影响. 环境科学,2007,28(3):506-511.
[17]  范成新,张路,杨龙云等. 湖泊沉积物氮磷内源负荷模拟. 海洋与湖沼,2002,33(4):370-378.
[18]  范成新,张路,包先明等. 太湖沉积物-水界面生源要素迁移机制及定量化:2. 磷释放的热力学机制及源汇转换. 湖泊科学,2006,18(3):207-217.
[19]  Kristensen PM,S?ndergaard M,Jeppesen E. Resuspension in a shallow lake. Hydrobiologia,1992,228:101-109.
[20]  朱广伟,秦伯强,高光. 风浪扰动引起大型浅水型湖泊内源磷暴发性释放的直接证据. 科学通报,2005,50(1):66-71.
[21]  Qin BQ,Hu WP,Gao G et al. Dynamics of sediment resuspension and the conceptual schema of nutrient release in the large shallow Lake Taihu,China. Chinese Science Bulletin,2004,49:54-64.
[22]  Hossain S,Eyre BD,Mckee LJ. Impacts of dredging on dry season suspended sediment concentration in the Brisbane River estuary,Queensland,Australia. Estuarine,Coastal and Shelf Science,2004,61:539-545.
[23]  Bremle G,Larsson P. PCBs concentration in fish in a river system after remediation of contaminated sediment. Environmental Science and Technology,1998,32:3491-3495.
[24]  Lohrer AM,Wetz JJ. Dredging-induced nutrient release from sediments to the water column in a southeastern saltmarsh tidal creek. Marine Pollution Bulletin,2003,46:1156-1163.
[25]  Zhong JC,Fan CX,Zhang L et al. Significance of dredging on sediment denitrification in Meiliang Bay,China:A year long simulation study. Journal of Environmental Sciences,2010,22(1):68-75.
[26]  Zhong JC,You BS,Fan CX et al. Influence of sediment dredging on chemical forms and release of phosphorus. Pedosphere, 2008,18(1):34-44.
[27]  Gustavson K,Allen Burton G,Francingues NJR et al. Evaluating the effectiveness of contaminated-sediment dredging:As the science of environmental dredging and sediment management changes,adaptive management strategies can help longterm remediation projects keep pace. Environmental Science and Technology,2008,15:5042-5047.
[28]  尤本胜,王同成,范成新等. 太湖沉积物再悬浮模拟方法. 湖泊科学,2007,19(5):611-617.
[29]  钟继承,刘国锋,范成新等. 湖泊底泥疏浚环境效应:Ⅱ. 内源氮释放控制作用. 湖泊科学,2009,21(3):335-344.
[30]  更多...
[31]  秦伯强. 太湖水环境面临的主要问题、研究动态与初步进展. 湖泊科学,1998,10(4):1-9.
[32]  Nayar S,Miller DJ,Hunt A et al. Environmental effects of dredging on sediment nutrients,carbon and granulometry in a tropical estuary. Environ Monit Assess,2007,127:1-13.
[33]  范成新,张路,王建军等. 湖泊底泥疏浚对内源释放影响的过程与机理. 科学通报,2004,49(15):1523-1528.

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