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Enhancement of the performance of constructed wetlands for wastewater treatment in winter: the effect of Tubifex tubifex

机译:冬季污水处理湿地湿地的性能提高:Tubifex Tubifex的作用

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摘要

Constructed wetlands (CWs) have recently been studied as a promising technology to achieve nutrient removal. However, the sustainable operation of CWs has shown low-efficiency wastewater treatment in winter. This study presented an improved constructed wetland (CW) with the addition of Tubifex tubifex in winter using laboratory batch systems. It was found that the reduction of nitrate (NO3-N) was significantly enhanced in wastewater in which water celery (Oenanthe javanica (Blume) DC) and Tubifex tubifex coexisted, with a removal efficiency of up to 97.58%. This system could also achieve high removal efficiencies for total nitrogen (TN, 85.10%) and ammonium nitrogen (NH4-N, 56.93%) associated with sediment stored. The organic carbon in both the wastewater and sediment was higher with the effect of Tubifex tubifex on mineralization, which could provide a carbon source sufficient for biological denitrification. The bioturbation by Tubifex tubifex could greatly stimulate the absolute abundance of anaerobic microbes. The outcomes of this study indicate that the potential utility of Tubifex tubifex could improve the ecosystem and water purification by CWs in winter.
机译:最近研究了湿地(CWS)作为有希望的技术,以实现营养去除。然而,CWS的可持续运行在冬季显示了低效率的废水处理。该研究在使用实验室批量系的冬季加入了加入蒸烟管的改进的构造湿地(CW)。发现在水芹菜(Oenanthe Javanica(Blume)DC)和Cubifex Tubifex共存的废水中,硝酸盐(NO3-N)的减少显着增强,除去效率高达97.58%。该系统还可以实现与储存的沉积物相关的总氮(TN,85.10%)和氮气(NH 4 -N,56.93%)的高除去效率。废水和沉积物中的有机碳随着蒸烟管对矿化的影响较高,这可以提供足以用于生物反硝化的碳源。由Tubifex Tubifex的生物扰动可以极大地刺激无厌氧微生物的绝对丰度。本研究的结果表明,Tubifex Tubifex的潜在效用可以改善冬季CWS的生态系统和水净化。

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  • 来源
    《RSC Advances》 |2016年第41期|共8页
  • 作者单位

    Shandong Univ Sch Environm Sci &

    Engn Shandong Key Lab Water Pollut Control &

    Resource Jinan 250100 Shandong Peoples R China;

    Shandong Univ Sch Environm Sci &

    Engn Shandong Key Lab Water Pollut Control &

    Resource Jinan 250100 Shandong Peoples R China;

    Shandong Univ Environm Res Inst Jinan 250100 Peoples R China;

    Shandong Univ Sch Environm Sci &

    Engn Shandong Key Lab Water Pollut Control &

    Resource Jinan 250100 Shandong Peoples R China;

    Shandong Univ Environm Res Inst Jinan 250100 Peoples R China;

    Shandong Univ Sch Environm Sci &

    Engn Shandong Key Lab Water Pollut Control &

    Resource Jinan 250100 Shandong Peoples R China;

    Shandong Univ Sch Environm Sci &

    Engn Shandong Key Lab Water Pollut Control &

    Resource Jinan 250100 Shandong Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
  • 关键词

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