水生植物对封闭式景观水体净化性能研究

Study on Purification Performance of Aquatic Plant for Closed Landscape Water

    摘要
  • 摘要: 模拟封闭式景观水体环境,以总氮(TN)、总磷(TP)、化学需氧量(CODCr)含量为指标,对比研究5种水生植物对不同污染程度的景观水体净化效果。结果表明:5种水生植物均具有不同程度的净化水质能力;中华天胡荽对生活污水TN、TP、COD去除率分别为31%、84%、69%,对学院景观湖水TN、TP、COD去除率分别为52%、81%、83%;水葱对公园景观湖水TN、TP、COD去除率分别为75%、83%、78%;在TN和TP污染程度较高的水体中,中华天胡荽的净化效果好;TN和TP污染程度较低的水体中,水葱对其的净化效果好;在不同污染程度的水体中,中华天胡荽对COD指标均有较好的去除效果。

     

    Abstract: The closed landscape water body environment was simulated, and the purification performance of 5 kinds of aquatic plant growing in the water body on the contents of total nitrogen (TN), total phosphorus (TP), and chemical oxygen demand (CODCr) was compared. The results showed that 5 species of aquatic plant have different levels of water purification capacity. The removal rates of TN, TP, and COD of domestic wastewater by Hydrocotylechinensis (Dunn) Craib were 31%, 84%, 69%, respectively. The removal rates of TN, TP, and COD of the lake water in Hainan Tropical Ocean University by Hydrocotylechinensis (Dunn) Craib were 52%, 81%, 83%, respectively. The removal rates of TN, TP, and COD of the lake water in Egret Park by ScirpusvalidusVahl were 75%, 83%, 78%, respectively.Hydrocotylechinensis (Dunn) Craib has good purification effect on the water body with higher content of TN and TP. In the water bodies with low pollution levels of TN and TP,ScirpusvalidusVahl has a good purification effect. Among the water bodies with different pollution degrees, Hydrocotylechinensis (Dunn) Craib has a good removal effect on COD.

     

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