四川农业大学学报 ›› 2011, Vol. 29 ›› Issue (03): 397-397.

• 研究论文 • 上一篇    下一篇

橐吾(Ligularia sibirica)对畜禽废水的净化能力

张俊萍   

  1. 四川农业大学
  • 收稿日期:2011-04-11 修回日期:2011-08-30 出版日期:2011-09-30 发布日期:2011-10-13
  • 通讯作者: 张俊萍
  • 基金资助:

    四川省教育厅重点项目

Study on purification ability of Ligularia to livestock wastewater

Zhang Junping   

  1. Sichuan Agricultural University
  • Received:2011-04-11 Revised:2011-08-30 Online:2011-09-30 Published:2011-10-13
  • Contact: Zhang Junping

摘要:

 首次选取橐吾(Ligularia sibirica)作为供试植物应用于人工湿地中,通过模拟人工湿地,研究橐吾人工湿地对畜禽废水的净化能力。结果表明:橐吾人工湿地对高浓度畜禽废水中总磷(TP)、总氮(TN)、化学需氧量(COD)和氨氮(NH4+-N)平均去除率分别达到92.73%、82.44%、82.78%和87.75%,对中浓度畜禽废水中TP、TN、COD和NH4+-N平均去除率也分别达到93.50%、88.79%、82.56%和96.07%;另外,橐吾更适用于主要污染物为有机物的污水;在氮磷的吸收方面,橐吾叶片氮磷含量均显著高于叶柄和根,且在3种处理下均表现主动吸收氮磷;根际基质脲酶活性与TN去除率呈显著正相关,磷酸酶活性与TP去除率呈正相关但不显著,可将基质脲酶活性作为评价TN去除率的指标;橐吾是很有潜力的人工湿地植物。

关键词: 橐吾, 人工湿地, 氮磷积累, 基质酶

Abstract:

By selecting Ligularia which has not been used in wetland as the test plant, and constructing simulating wetland, this paper researched the purification ability to livestock wastewater by the Ligularia wetland. The results showed that: The removal rate of Ligularia wetland to the high concentration of livestock wastewater on TP, TN, COD and NH4+-N reached 92.73%, 82.44%, 82.78% and 87.75%, to the middle concentration of livestock wastewater it also reached 93.50%, 88.79%, 82.56% and 96.07%. In addition, Ligularia is more suitable for wastewater that has organic contaminant as the main pollutants. At the aspect of absorption nitrogen and phosphorus, Ligularia leaves had significant higher contents of N and P compared with the petioles and roots, and it showed an initiative absorption process to nitrogen and phosphorus in the three treatments. Rhizosphere urease activity of substrate had a significant positive correlation with the removal of TN, and phosphatase activity had a positive correlation with the removal of TP but which was showed not significant. So urease activity of substrate can be used as an evaluation index of removal rate of TN. At last, Ligularia can be used as a potential wetland plants.

Key words: Ligularia, wetland, accumulation of nitrogen and phosphorus, Substrate enzyme