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曝气时间对美人蕉生态浮床去除水体中营养盐的影响

薛彦君 许秋瑾 冯 胜 胡小贞 胡妍玢 张雅娴 赵 阳

薛彦君, 许秋瑾, 冯 胜, 胡小贞, 胡妍玢, 张雅娴, 赵 阳. 曝气时间对美人蕉生态浮床去除水体中营养盐的影响[J]. 环境科学研究, 2015, 28(11): 1749-1754.
引用本文: 薛彦君, 许秋瑾, 冯 胜, 胡小贞, 胡妍玢, 张雅娴, 赵 阳. 曝气时间对美人蕉生态浮床去除水体中营养盐的影响[J]. 环境科学研究, 2015, 28(11): 1749-1754.
XUE Yanjun, XU Qiujin, FENG Sheng, HU Xiaozhen, HU Yanbin, ZHANG Yaxian, ZHAO Yang. Impact of Aeration Time on Nutrient Removal by Ecological Floating Bed of Canna indica in Polluted Water[J]. Research of Environmental Sciences, 2015, 28(11): 1749-1754.
Citation: XUE Yanjun, XU Qiujin, FENG Sheng, HU Xiaozhen, HU Yanbin, ZHANG Yaxian, ZHAO Yang. Impact of Aeration Time on Nutrient Removal by Ecological Floating Bed of Canna indica in Polluted Water[J]. Research of Environmental Sciences, 2015, 28(11): 1749-1754.

曝气时间对美人蕉生态浮床去除水体中营养盐的影响

基金项目: 国家自然科学基金项目(41473110,41371446);国家水体污染控制与治理科技重大专项(2014ZX07510-001)

Impact of Aeration Time on Nutrient Removal by Ecological Floating Bed of Canna indica in Polluted Water

  • 摘要: 为有效去除水体中的营养盐,以美人蕉生态浮床为研究对象,将曝气时间设置为0(对照)、4、8、12 h/d,曝气量均为2.4 m3/(m2·d),研究曝气时间对植物生态浮床去除水体中营养盐的影响,在培养的0、3、5、7、18、28 d对美人蕉株高进行测量,同时监测水体中ρ(DO)、ρ(TN)、ρ(TP)、ρ(CODCr)、ρ(NH3-N)、ρ(NO3--N),试验结束后对美人蕉根际细菌总数进行测定. 结果表明:①与对照组相比,曝气4和8 h/d情况下ρ(DO)及TN、TP、NH3-N、NO3--N去除率均差异显著;②曝气4 h/d下美人蕉长势最好,并且在试验的第28天美人蕉株高达109 cm;③曝气4 h/d下ρ(DO)最高,并且对水体中营养盐的去除效果最好,试验至第28天,ρ(DO)为11.29 mg/L,TN、TP、CODCr、NH3-N、NO3--N去除率分别为75.10%、69.32%、65.75%、73.29%、78.79%;④试验至第28天,曝气4 h/d情况下美人蕉根际细菌总数达1.01×106 mL-1,显著高于曝气0、8和12 h/d下的细菌总数(分别为4.12×105、9.07×105、7.77×105 mL-1). 研究显示,该试验条件下,曝气4 h/d对水体中营养盐的去除效果最佳.

     

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出版历程
  • 收稿日期:  2015-01-21
  • 修回日期:  2015-04-10
  • 刊出日期:  2015-11-25

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