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谢朦, 张飞, 章莹颖, 秦霄, 马炯, 肖炘, 成家杨. 3种浮萍对富营养化水体的修复[J]. 环境工程学报, 2016, 10(5): 2447-2453. doi: 10.12030/j.cjee.201412076
引用本文: 谢朦, 张飞, 章莹颖, 秦霄, 马炯, 肖炘, 成家杨. 3种浮萍对富营养化水体的修复[J]. 环境工程学报, 2016, 10(5): 2447-2453. doi: 10.12030/j.cjee.201412076
shu
Xie Meng, Zhang Fei, Zhang Yingying, Qin Xiao, Ma Jiong, Xiao Xin, Cheng Jiayang. Effect of three duckweed species on remediation of eutrophic water[J]. Chinese Journal of Environmental Engineering, 2016, 10(5): 2447-2453. doi: 10.12030/j.cjee.201412076
Citation: Xie Meng, Zhang Fei, Zhang Yingying, Qin Xiao, Ma Jiong, Xiao Xin, Cheng Jiayang. Effect of three duckweed species on remediation of eutrophic water[J]. Chinese Journal of Environmental Engineering, 2016, 10(5): 2447-2453. doi: 10.12030/j.cjee.201412076
shu

3种浮萍对富营养化水体的修复

  • 1.

    北京大学深圳研究生院环境与能源学院, 深圳 518055

  • 2.

    中国科学院过程工程研究所, 北京 100190

  • 基金项目:

    深圳市新兴产业重点资助项目(JC201104210118A)

    国家海洋公益性行业科研专项资助(201305022)

  • 中图分类号: X52

Effect of three duckweed species on remediation of eutrophic water

  • 1.

    School of Environment and Energy, Shenzhen Graduate School, Peking University, Shenzhen 518055, China

  • 2.

    Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China

  • Fund Project:

摘要

  • 摘要: 选用Spirodela polyrhiza、Lemna aequinoctialis和Landoltia punctata 3种太湖浮萍为实验对象,在实验室条件下,研究其生长状况及其对模拟太湖水体的净化效果。结果表明,3种浮萍对水体总氮、氨氮、硝氮和总磷都具有很好的净化效果,S. polyrhiza,L. aequinoctialis和L. punctata对总氮的去除率分别为80.3%、73.7%和83.8%,对总磷的去除率分别为98.8%,96.4%和99.3%,但对有机物的去除作用比较有限。除营养吸收外,浮萍的水质净化能力还表现在对水中环境因子的影响,3种浮萍都能够维持水体pH在4.6~6.5的范围内以适合自身生长,并能够在一定程度上增加水体的溶解氧含量。硝化和反硝化作用是氮去除的主要途径,由于水体溶解氧含量较高,促进了好氧反硝化作用的进行。相比于S. polyrhiza和L. aequinoctialis,L. punctata具有较强的水体净化效果和生长速度,是净化太湖富营养化水体的理想水生植物。
    Abstract: Three Tai Lake local duckweed species, Spirodela polyrhiza, Lemna aequinoctialis, and Landoltia punctata, were investigated for the feasibility of their treatment of eutrophic water under lab conditions. The results showed that the duckweed species had obvious removal ability of the total nitrogen (TN), ammonium (NH4+-N), nitrate (NO3--N), and total phosphorus (TP). The removal rates of TN by S. polyrhiza, L. aequinoctialis and L. punctate were 80.3%, 73.7% and 83.8%, respectively, and the removal rates of TP were 98.8%, 96.4% and 99.3%, respectively. However, there was limited removal efficiency of chemical oxygen demand (COD). Besides nutrient removal, duckweed affected the characteristics of the tested water in several aspects, such as maintaining pH between 4.6 and 6.5 for better growth conditions, and enhancing the dissolved oxygen (DO) level. Nitrification and denitrificaton processes were the major mechanisms for nitrogen removal, and aerobic denitrification may play a crucial role due to a high DO level in the tested water. Compared with S. polyrhiza and L. aequinoctialis, L. punctata grew better under the eutrophic conditions and achieved a higher removal efficiency, which suggests that L. punctata is the better species for eutrophic water treatment in Tai Lake.
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  • 收稿日期:  2015-02-17
  • 刊出日期:  2016-06-03
谢朦, 张飞, 章莹颖, 秦霄, 马炯, 肖炘, 成家杨. 3种浮萍对富营养化水体的修复[J]. 环境工程学报, 2016, 10(5): 2447-2453. doi: 10.12030/j.cjee.201412076
引用本文: 谢朦, 张飞, 章莹颖, 秦霄, 马炯, 肖炘, 成家杨. 3种浮萍对富营养化水体的修复[J]. 环境工程学报, 2016, 10(5): 2447-2453. doi: 10.12030/j.cjee.201412076
shu
Xie Meng, Zhang Fei, Zhang Yingying, Qin Xiao, Ma Jiong, Xiao Xin, Cheng Jiayang. Effect of three duckweed species on remediation of eutrophic water[J]. Chinese Journal of Environmental Engineering, 2016, 10(5): 2447-2453. doi: 10.12030/j.cjee.201412076
Citation: Xie Meng, Zhang Fei, Zhang Yingying, Qin Xiao, Ma Jiong, Xiao Xin, Cheng Jiayang. Effect of three duckweed species on remediation of eutrophic water[J]. Chinese Journal of Environmental Engineering, 2016, 10(5): 2447-2453. doi: 10.12030/j.cjee.201412076
shu

3种浮萍对富营养化水体的修复

  • 1. 北京大学深圳研究生院环境与能源学院, 深圳 518055
  • 2. 中国科学院过程工程研究所, 北京 100190
  • 收稿日期:  2015-02-17
基金项目:

深圳市新兴产业重点资助项目(JC201104210118A)

国家海洋公益性行业科研专项资助(201305022)

摘要: 选用Spirodela polyrhiza、Lemna aequinoctialis和Landoltia punctata 3种太湖浮萍为实验对象,在实验室条件下,研究其生长状况及其对模拟太湖水体的净化效果。结果表明,3种浮萍对水体总氮、氨氮、硝氮和总磷都具有很好的净化效果,S. polyrhiza,L. aequinoctialis和L. punctata对总氮的去除率分别为80.3%、73.7%和83.8%,对总磷的去除率分别为98.8%,96.4%和99.3%,但对有机物的去除作用比较有限。除营养吸收外,浮萍的水质净化能力还表现在对水中环境因子的影响,3种浮萍都能够维持水体pH在4.6~6.5的范围内以适合自身生长,并能够在一定程度上增加水体的溶解氧含量。硝化和反硝化作用是氮去除的主要途径,由于水体溶解氧含量较高,促进了好氧反硝化作用的进行。相比于S. polyrhiza和L. aequinoctialis,L. punctata具有较强的水体净化效果和生长速度,是净化太湖富营养化水体的理想水生植物。

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