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湖泊科学  2009 

磷素在湖滨湿地基质-上覆水界面中的迁移过程

DOI: 10.18307/2009.0510

Keywords: 湿地,基质,上覆水,,吸附,抚仙湖

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Abstract:

以抚仙湖流域马料河湖滨湿地基质为研究对象,进行了低浓度(P≤3.0mg/L)负荷条件的吸附动力学试验;以及低、高浓度磷的吸附等温线试验.结果表明,在初始磷浓度为0.02mg/L、0.03mg/L时,基质存在磷释放现象.当初始浓度增加到0.05mg/L时,基质开始吸附磷,24h后吸附趋于平衡状态.以一元线性回归法对上述基质的吸附等温线进行了Freundlich模型和Langmuir模型的回归分析,在此基础上,进行了高初始浓度下上覆水与基质振荡24h后基质对磷的吸附试验,结果表明在高浓度下,基质样品可在24h内释放原来吸附的大部分磷量.

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