2013 Volume 7 Issue 4
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Duan Jincheng, Zhang Yimin, Zhang Hongwei, Gao Yuexiang, Chao Jianying. Purification effect of ecological floating beds of flakiness connection in slightly polluted river water[J]. Chinese Journal of Environmental Engineering, 2013, 7(4): 1324-1330.
Citation: Duan Jincheng, Zhang Yimin, Zhang Hongwei, Gao Yuexiang, Chao Jianying. Purification effect of ecological floating beds of flakiness connection in slightly polluted river water[J]. Chinese Journal of Environmental Engineering, 2013, 7(4): 1324-1330.
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Purification effect of ecological floating beds of flakiness connection in slightly polluted river water

  • 1.

    School of Environmental and Safety Engineering,Changzhou University, Changzhou 213164, China

  • 2.

    Nanjing Institute of Environmental Science, Ministy of Environmental Protection, Nanjing 210042, China

  • 3.

    Department of Agriculture and Forestry of Yixing, Yixing 214200, China

  • Received Date: 04/06/2012
    Accepted Date: 17/02/2012
    Available Online: 09/04/2013
    Fund Project:
  • Miaojian creek, a tributary of Caoqiao River was selected as the experimental river, and Nymphaea alba, Acorus calamus Linn and Oenanthe javanica (Blume) DC were used as the plants of floating beds for purifying the slightly polluted river water. The purification ability of ecological floating beds of flakiness connection was studied with the seasons’ change and the relationship between the area and purification ability of ecological floating beds of flakiness connection. The results showed that the purification ability of plants changed with seasons and appeared a "U" type in autumn-winter-spring, but the corresponding changes of water quality presented an inverted "U" type. In certain nutrient loads and plant growth situation, and along the flow direction, the concentrations of nitrogen and phosphorus would decrease the increase of floating bed area —In spring, the removal rate of TN rose from 8.6% to 26.7% with floating bed area’s increase in Acorus calamus Linn zone, and the TP increased from 17.1% to 58.2%, then TN and TP removal rate in Oenanthe javanica (Blume) DC zone could reach up to 22.0% and 28.0%. Research indicated that the ecological floating beds of flakiness connection were one of the effective feasible methods to the river water quality improvement, and could provide the scientific basis for the nutrients control of rivers into the Taihu Lake.
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Purification effect of ecological floating beds of flakiness connection in slightly polluted river water

  • Received Date: 04/06/2012
  • Accepted Date: 17/02/2012
  • Available Online: 09/04/2013
Fund Project:

Abstract: Miaojian creek, a tributary of Caoqiao River was selected as the experimental river, and Nymphaea alba, Acorus calamus Linn and Oenanthe javanica (Blume) DC were used as the plants of floating beds for purifying the slightly polluted river water. The purification ability of ecological floating beds of flakiness connection was studied with the seasons’ change and the relationship between the area and purification ability of ecological floating beds of flakiness connection. The results showed that the purification ability of plants changed with seasons and appeared a "U" type in autumn-winter-spring, but the corresponding changes of water quality presented an inverted "U" type. In certain nutrient loads and plant growth situation, and along the flow direction, the concentrations of nitrogen and phosphorus would decrease the increase of floating bed area —In spring, the removal rate of TN rose from 8.6% to 26.7% with floating bed area’s increase in Acorus calamus Linn zone, and the TP increased from 17.1% to 58.2%, then TN and TP removal rate in Oenanthe javanica (Blume) DC zone could reach up to 22.0% and 28.0%. Research indicated that the ecological floating beds of flakiness connection were one of the effective feasible methods to the river water quality improvement, and could provide the scientific basis for the nutrients control of rivers into the Taihu Lake.

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