APPLICATION OF AQUATIC PLANTS COMMUNITY BUILDING TECHNOLOGY IN EUTROPHIC WATER RESTORATION

CHEN Jin-huan; TANG Jia-wen; WANG Kai-nan; ZHANG Qiu-zhuo

doi:10.13205/j.hjgc.202008018

Volume 38 Issue 8

Nov. 2020

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Article Navigation > ENVIRONMENTAL ENGINEERING > 2020 > 38(8): 105-112,135

CHEN Jin-huan, TANG Jia-wen, WANG Kai-nan, ZHANG Qiu-zhuo. APPLICATION OF AQUATIC PLANTS COMMUNITY BUILDING TECHNOLOGY IN EUTROPHIC WATER RESTORATION[J]. ENVIRONMENTAL ENGINEERING , 2020, 38(8): 105-112,135. doi: 10.13205/j.hjgc.202008018

Citation:

CHEN Jin-huan, TANG Jia-wen, WANG Kai-nan, ZHANG Qiu-zhuo. APPLICATION OF AQUATIC PLANTS COMMUNITY BUILDING TECHNOLOGY IN EUTROPHIC WATER RESTORATION[J]. ENVIRONMENTAL ENGINEERING , 2020, 38(8): 105-112,135. doi: 10.13205/j.hjgc.202008018

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APPLICATION OF AQUATIC PLANTS COMMUNITY BUILDING TECHNOLOGY IN EUTROPHIC WATER RESTORATION

doi: 10.13205/j.hjgc.202008018

1. Shanghai Key Laboratary for Urban Ecological Processes and Eco-Restoration, School of Ecological and Environmental Sciences, East China Normal University, Shanghai 200241, China;
2. Institute of Eco-Chongming(IEC), Shanghai 200062, China

Received Date: 2019-08-06

Abstract

Abstract

In order to study the ecological restoration effect of eutrophic water by aquatic plants, nine aquatic macrophytes, including Phragmites communis, Iris pseudacorus L., Canna indica L., Lythrum salicaria L., Myriophyllum verticillatum L., Hydrilla verticillata, Potamogeton distinctus, Hydrocotyle vulgaris and Nymphaea L. were selected to investigate their purification effect. The results showed that all of the nine plants exhibited obvious purification effects on eutrophic water, the removal rates of TN, TP, NH₄⁺-N and COD could achieve 49.97%~97.89%, 75.66%~99.92%, 55.91%~95.87% and 57.19%~67.87 respectively. According to the result of laboratory scale experiment, the demonstration water restoration project was designed and applied in Chanel C, Dishui Lake. The reults showed that the concentration of TN, TP, NH₄⁺-N and COD_Mn were decreased by 25.87%, 56.60%, 18.42% and 29.25% after ecological restoration, and the value of chlorophyll was decreased by 60.1% after restoration. The dissolved oxygen and transparency was increased by 45.73% and 28.68%, respectively. Meanwhile, the demonstration area was transformed from medium level eutrophication to mild level after restoration, which indicated that the application of ecological restoration by aquatic plants exhibited significant performance in water purification.
- aquatic plants,
- community building,
- purification,
- eutrophic water,
- ecological restoration

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