几种植物去除污染水体中养分效果研究
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河南科技大学博士生基金(2006-09001158)


Removal Efficiency of Nutrients from Wastewater by Several Plants
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    摘要:

    对城市尾水和人工模拟富营养化水体进行了静态培养试验。通过比较不同植物对城市尾水中氮、磷去除效果, 以及它们在不同磷浓度条件下对不同形态氮素去除效果研究, 目的在于筛选出适合治理富养分污染水体的植物品种。研究结果表明, 空心菜(Ipomiea aquatica)、酸模(Rumex acetosa)、莎草(Cyperusglomeratus)3种植物都能很好地吸收尾水中的营养物质, 且生长状况良好。经3种植物处理的城市尾水, 其氮、磷浓度随水培时间的增加而降低。莎草、酸模对污水中TN的去除率达90%以上, 其中莎草最高, 达93.4%; 空心菜对全磷的去除率最高达76.9%。NH4+-N在处理前期变化显著,且莎草的净化效果最好达94.4%; 污水中NO3--N含量随着水培时间的增加而逐渐下降, 但在试验后期NO3--N又有所增加。酸模去除NO3--N效果最好, 达65.4%。另外3种植物对NH4+-N和NO3--N都具有一定的吸收作用, 并且优先吸收NH4+-N。且从对于NH4+-N和NO3--N净化效果看, 莎草>酸模>空心菜。

    Abstract:

    The study method used is the one investigating the effluent from activated sludge treatment and artificial wastewater in two experiments. The first experiment examined the nitrogen and phosphorus removal efficiency of effluent from activated sludge treatment by several plants. The second experiment explored the removed efficiency of different forms of nitrogen with different concent rations of phosphorus in the artificial wastewater. The aim of the study was to filter out the proper plant varieties for eutrop hication treatment. Results showed that the three plants of I pomiea aquatica Forsk, Rumex acetosa L, and Cy perus glomerat us L had perfect purification capacity and growth in good condition. The concent ration of nit rogen and phosphorus in the effluent decreased during experiment, especially TN removal reached more than 90% by Cyperus glomerat us L and R umex acetosa L Cy perus glomerat us L had the best removal efficiency of 93.4 %, the removal rate of TP exceeded 70%, and I pomiea aquatica For skhad the best removal efficiency of 76.9 %. In the pretreatment, NH4+-N had significant changes and Cy perus glomerat us L treatment showed the best purification of 94.4 %. The content of NO3--N gradually decreased in preexperiment period and then showed an increased tendency. The best removal efficiency by Rume xacetosa L reached 65.4 %. Nitrogen and phosphorus removals in control treatment were lower than in treatments of plant system. The experiment for different forms of nitrogen removal with different concent rations of phosp horus in the artificial wastewater by three plants showed that both N H4+-N and NO3--N were absorbed by the three plants, with the priority absorption of N H4+-N. The order of plant purification effect for NH4+-N and NO3--N was Cy perus glomerat us D L > Rumex acetosa L > I pomiea aquatica Forsk.

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常会庆,寇太记,乔鲜花,何俊瑜.几种植物去除污染水体中养分效果研究[J].水土保持通报,2009,(5):118-122

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  • 收稿日期:2009-01-14
  • 最后修改日期:2009-03-19
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  • 在线发布日期: 2014-11-26
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