可调式沉水植被网床对泥沙型富营养化河道生态修复工程研究

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Abstract

The flowing sediment typed river water in the Lingang New City, Shanghai was restored with the continuous adjustable Alternanthera philoxeroides and Myriophyllum verticillatum submerged vegetation net beds. The bioremediation efficiency was evaluated by 4-month continuous monitoring of total nitrogen(TN), nitrite nitrogen(NO₂-N), nitrate nitrogen(NO₃-N), total phosphorus(TP), phosphate(PO4-P) and Secchi depth(SD) from June to December in 2011. The results showed that the transparency and water quality of the eutrophic sediment typed river were improved significantly. The TN, NO₂-N, NO₃-N, TP, PO₄-P concentrations of the eutrophicate water were decreased by 69.58%, 67.91%, 84.48%, 62.26%, 82.61% and 45.48%, 58.32%, 76.56%, 43.12%, 73.68%, respectively with Alternanthera philoxeroides and Myriophyllum verticillatum submerged vegetation net beds. The transparency of sediment typed river water was increased by 18% and 26%, respectively with Alternanthera philoxeroides and Myriophyllum verticillatum submerged vegetation net beds. It indicated that Alternanthera philoxeroides submerged vegetation net bed was better than Myriophyllum verticillatum submerged vegetation net bed in reducing nutrient. While Myriophyllum verticillatum submerged vegetation net bed was better than Alternanthera philoxeroides submerged vegetation net bed in increasing transparency of the sediment typed river water. So combining both Myriophyllum verticillatum and Alternanthera philoxeroides submerged vegetation net beds would increase bioremediation efficiency for removing nutrients and sediment in rivers.

Key words： water pollution control submerged vegetation river of sediment type nitrogen absorption ecological restoration

Received: 25 February 2013

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	Articles by authors
	KANG Yin-hua
	HE Pei-min
	LI Juan-ying
	WU Hai-long
	WEN Wen-ke
	SHAO Liu
	ZHANG Yin-jiang

Cite this article:

KANG Yin-hua,HE Pei-min,LI Juan-ying, et al. Bioremediation of sediment typed eutrophic river with adjustable submerged vegetation net-beds technology[J]. , 2013, 32(1): 34-39.

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http://www.ecolsci.com/EN/ OR http://www.ecolsci.com/EN/Y2013/V32/I1/34

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[1]	. [J]. Ecological Science, 2020, 39(3): 160-.