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改良填料折流式生物滞留系统对雨水中氮磷削减的效果

冉阳 付峥嵘 马满英 王冶 叶青勇

冉阳,付峥嵘,马满英,等.改良填料折流式生物滞留系统对雨水中氮磷削减的效果[J].环境工程技术学报,xxxx,x(x): x-xx doi: 10.12153/j.issn.1674-991X.20210290
引用本文: 冉阳,付峥嵘,马满英,等.改良填料折流式生物滞留系统对雨水中氮磷削减的效果[J].环境工程技术学报,xxxx,x(x): x-xx doi: 10.12153/j.issn.1674-991X.20210290
RAN Y,FU Z R,MA M Y,et al.Effect of amended filler fold-flow bioretention system on nitrogen and phosphorus reduction in rainwater[J].Journal of Environmental Engineering Technology,xxxx,x(x): x-xx doi: 10.12153/j.issn.1674-991X.20210290
Citation: RAN Y,FU Z R,MA M Y,et al.Effect of amended filler fold-flow bioretention system on nitrogen and phosphorus reduction in rainwater[J].Journal of Environmental Engineering Technology,xxxx,x(x): x-xx doi: 10.12153/j.issn.1674-991X.20210290

改良填料折流式生物滞留系统对雨水中氮磷削减的效果

doi: 10.12153/j.issn.1674-991X.20210290
基金项目: 湖南省株洲市科技计划基金资助项目(No.2020-022);湖南省株洲市科技计划基金资助项目(No.2019-022)
详细信息
    作者简介:

    冉阳(1997—),男,硕士研究生,研究方向为海绵城市生物滞留技术,2499533280@qq.com

    通讯作者:

    付峥嵘(1974—),男,副教授,博士,研究方向为绿色建筑、海绵城市生物滞留技术,441680332@qq.com

  • 中图分类号: X52,TU992

Effect of amended filler fold-flow bioretention system on nitrogen and phosphorus reduction in rainwater

  • 摘要:

    针对生物滞留池对雨水中氮、磷去除效果不稳定,甚至出现负去除现象,开展改良生物滞留系统的研究。通过构建直流式和折流式2种生物滞留系统,分别填充传统填料、羟基铝蛭石污泥颗粒(HAVSP)改良填料,搭建传统填料直流式生物滞留柱(1#)、改良填料直流式生物滞留柱(2#)、改良填料折流式生物滞留柱(3#)3个模拟试验柱;比较了3个模拟试验柱对雨水中氮、磷的去除效果,并探讨了羟基铝蛭石污泥对生物滞留填料的改良作用。结果表明:HAVSP改良填料折流式生物滞留系统对氮、磷的削减效果比传统填料和改良填料直流式生物滞留系统的削减效果更加明显,且在350 mm淹没出流高度时对氮、磷削减效果最佳,总氮和硝态氮去除率最高可达76%和77%。

     

  • 图  1  生物滞留试验柱及剖面图

    注:图中数字为试验柱尺寸,mm。

    Figure  1.  Biological retention test column numbering and profile

    图  2  1#和2#试验柱出水不同形态氮与总磷浓度及去除率

    Figure  2.  Concentrations and removal rates of different forms of nitrogen and total phosphorus of 1# and 2# test column effluent

    图  3  3#试验柱不同淹没出流高度出水各形态氮与总磷浓度及去除率

    Figure  3.  Concentrations and removal rates of different forms of nitrogen and total phosphorus in effluent at different submerged outflow heights of 3# test column

    图  4  HAVSP扫描电镜图

    Figure  4.  SEM image of HAVSP

    图  5  红外光谱和XRD表征

    Figure  5.  FTIR spectra and XRD images of HAVSP

    表  1  生物滞留试验柱内填充的物质

    Table  1.   Materials filled in bioretention test column

    结构厚度/
    mm
    传统填料生物
    滞留池
    改良填料生物
    滞留池
    覆盖层70树皮和有机质树皮和有机质
    种植土壤250校园绿化带土壤校园绿化带土壤
    填料层(上层)450沙子石英砂
    填料层(下层)200沙子90%沙+5%木屑+5%HAVSP
    砂滤层90粗砂(直径1~2 cm)粗砂(直径1~2 cm)
    排水层100砾石(直径12~35 mm)+DN25穿孔管砾石(直径12~35 mm)+DN25穿孔管
    下载: 导出CSV

    表  2  模拟雨水的污染物来源及浓度

    Table  2.   Sources and concentrations of pollutants in simulated rainwater mg/L 

    进水浓度水质指标
    总氮(TN)氨氮(NH3-N)硝态氮(NO3-N)总磷(TP)
    低浓度4111
    中浓度8222
    高浓度16444
    下载: 导出CSV

    表  3  HAVSP主要元素组成

    Table  3.   Main element composition of HAVSP

    元素质量百分比/%质量百分比偏差/%原子百分比/%元素质量百分比/%质量百分比偏差/%原子百分比/%
    Fe6.120.141.75P0.070.030.03
    Al8.210.084.86N0.000.520.00
    Si10.420.095.93C41.320.3254.96
    Ca0.080.030.03O31.500.2431.46
    下载: 导出CSV
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  • 收稿日期:  2021-07-05
  • 网络出版日期:  2022-07-15

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