| 几种人工湿地基质对磷素的吸附作用研究 |
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| 引用本文： | 赵桂瑜,秦琴,周琪.几种人工湿地基质对磷素的吸附作用研究[J].环境科学与技术,2006,29(6):84-85. |
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| 作者姓名： | 赵桂瑜 秦琴 周琪 |
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| 作者单位： | 同济大学污染控制与资源化研究国家重点实验室,上海,200092 |
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| 基金项目： | 国家科技攻关项目
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上海市科委资助项目 |
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| 摘 要： | 从吸附动力学角度出发,研究了干渣、沸石、页岩陶粒和白云石四种基质对水体中磷素的吸附作用,结果表明,干渣对磷素的吸附量最大,其次是沸石和页岩陶粒,白云石对磷素的吸附量最小。作用48h后,干渣对磷素的吸附量分别是沸石、页岩陶粒和白云石的3.9倍、6.7倍和11倍。一级动力学方程、Elovich方程和双常数速率方程均能很好地描述人工湿地基质对磷素的等温吸附动力学特征,但从相关系数来看,Elovich方程的描述更为准确。四种基质对磷素的吸附速率依次为:干渣>页岩陶粒>沸石>白云石。
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| 关 键 词： | 人工湿地 基质 磷 吸附 动力学 |
| 文章编号： | 1003-6504(2006)06-0084-02 |
| 收稿时间： | 2005-07-03 |
| 修稿时间： | 2005-09-06 |
Phosphorus Adsorption by Some Substrates in Constructed Wetland System |
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| ZHAO Gui-yu,QIN Qin,ZHOU Qi.Phosphorus Adsorption by Some Substrates in Constructed Wetland System[J].Environmental Science and Technology,2006,29(6):84-85. |
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| Authors: | ZHAO Gui-yu QIN Qin ZHOU Qi |
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| Abstract: | Phosphorus adsorption kinetics of blast furnace slug,zeolite,shale and dolomite were studied through experiments on isotherms P-adsorption.Results showed that blast furnace slug has the highest P-adsorption capacity,followed by zeolite and shale,dolomite has the less effect.In terms of correlation coefficient,Elovich equation is the best model to describe P-absorption kinetics comparing with other equations. |
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| Keywords: | constructed wetland substrate phosphorus adsorption kinetics |
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