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Purification Efficiency of Three Combinations of Native Aquatic Macrophytes in Artificial Wastewater in Autumn

Author

Listed:
  • Lei Xu

    (Key Laboratory of Plant Resources Conservation and Sustainable Utilization, Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China)

  • Siyu Chen

    (School of Marine Sciences, Sun Yat-sen University, Guangzhou 510275, China)

  • Ping Zhuang

    (Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 511458, China)

  • Dongsheng Xie

    (Key Laboratory of Plant Resources Conservation and Sustainable Utilization, Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China
    College of Life Sciences, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China)

  • Xiaoling Yu

    (Key Laboratory of Plant Resources Conservation and Sustainable Utilization, Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China
    College of Life Sciences, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China)

  • Dongming Liu

    (Key Laboratory of Plant Resources Conservation and Sustainable Utilization, Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China)

  • Zhian Li

    (Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 511458, China)

  • Xinsheng Qin

    (College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou 510642, China)

  • Faguo Wang

    (Key Laboratory of Plant Resources Conservation and Sustainable Utilization, Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China)

  • Fuwu Xing

    (Key Laboratory of Plant Resources Conservation and Sustainable Utilization, Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China)

Abstract

Water pollution caused by excessive nutrient and biological invasion is increasingly widespread in China, which can lead to problems with drinking water as well as serious damage to the ecosystem if not be properly treated. Aquatic plant restoration (phytoremediation) has become a promising and increasingly popular solution. In this study, eight native species of low-temperature-tolerant aquatic macrophytes were chosen to construct three combinations of aquatic macrophytes to study their purification efficiency on eutrophic water in large open tanks during autumn in Guangzhou City. The total nitrogen (TN) removal rates of group A ( Vallisneria natans + Ludwigia adscendens + Monochoria vaginalis + Saururus chinensis ), group B ( V. natans + Ipomoea aquatica + Acorus calamus + Typha orientalis ), and group C ( V. natans + L. adscendens + Schoenoplectus juncoides + T. orientalis ) were 79.10%, 46.39%, and 67.46%, respectively. The total phosphorus (TP) removal rates were 89.39%, 88.37%, and 91.96% in groups A, B, and C, respectively, while the chemical oxygen demand (COD) removal rates were 93.91%, 96.48%, and 92.78%, respectively. In the control group (CK), the removal rates of TN, TP, and COD were 70.42%, 86.59%, and 87.94%, respectively. The overall removal rates of TN, TP, and COD in the plant groups were only slightly higher than that in CK group, which did not show a significant advantage. This may be related to the leaf decay of some aquatic plants during the experiment, whereby the decay of V. natans was the most obvious. The results suggest that a proper amount of plant residue will not lead to a significant deterioration of water quality.

Suggested Citation

  • Lei Xu & Siyu Chen & Ping Zhuang & Dongsheng Xie & Xiaoling Yu & Dongming Liu & Zhian Li & Xinsheng Qin & Faguo Wang & Fuwu Xing, 2021. "Purification Efficiency of Three Combinations of Native Aquatic Macrophytes in Artificial Wastewater in Autumn," IJERPH, MDPI, vol. 18(11), pages 1-13, June.
    • Handle: RePEc:gam:jijerp:v:18:y:2021:i:11:p:6162-:d:570326
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    References listed on IDEAS

    as
    1. Feng Su & Zhian Li & Yingwen Li & Lei Xu & Yongxing Li & Shiyu Li & Hongfeng Chen & Ping Zhuang & Faguo Wang, 2019. "Removal of Total Nitrogen and Phosphorus Using Single or Combinations of Aquatic Plants," IJERPH, MDPI, vol. 16(23), pages 1-12, November.
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