| Study on Adsorption of Suspended Sediments to Phosphate in the Three Gorges Reservoir Area |
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| 作者姓名： | GUO Jing - song YANG Cheng LU Ping - yu CHU Zhu - quan |
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| 作者单位： | 1. College of Urban Construction and Environmental Engineering , Chongqing University, Chongqing 400045, P. R. China; 2. Water Environment Monitoring Center for Upper Reaches of Yangtze River, Water Conservancy Committee, Ministry of Water Resources, Chon |
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| 摘 要： | Suspended sediments play an important role in the transformation process of pollutants in rivers.The adsorption characteristic of suspended sediments in Three Gorges Reservoir Area to phosphate was studied in this paper.Based on the indoor adsorption balancing experiment and kinetic modeling experiment,the main factors for adsorption process of sediments(particle size of sediment,initial concentration etc.) were discussed.The major results of the experiment were as follows:(1) Three kinds of suspended sediments with different particle sizes were used for the study of adsorption characteristic with different sediment concentration.The amount of phosphate adsorption increased with the increase of the sediment concentration and sediment particle size.(2) With the help of Langmuir isotherm theory,the related parameters in kinetic model were estimated,the experiment results indicated that the adsorption isotherm of phosphate in Three Gorges Reservoir Area fitted with the fifth type of Langmuir adsorption isotherm,the maximum amount of phosphate adsorption would emerge when the phosphate concentration was relatively high,but it would move down when the phosphate concentration increased afterwards.(3) Phosphate adsorption increased with the increase of initial phosphate concentration,the average time for adsorption balance was 2-4 hours.
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| 关 键 词： | The Three Gorges Reservoir Area sediments phosphate adsorption characteristic |
| 收稿时间： | 2006/4/25 0:00:00 |
| 修稿时间： | 2006/4/25 0:00:00 |
Study on Adsorption of Suspended Sediments to Phosphate in the Three Gorges Reservoir Area |
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| GUO Jing - song,YANG Cheng,LU Ping - yu,CHU Zhu - quan.Study on Adsorption of Suspended Sediments to Phosphate in the Three Gorges Reservoir Area[J].Storage & Process,2006(6):75-78. |
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| Authors: | GUO Jing - song YANG Cheng LU Ping - yu CHU Zhu - quan |
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| Institution: | 1. College of Urban Construction and Environmental Engineering , Chongqing University, Chongqing 400045, P. R. China; 2. Water Environment Monitoring Center for Upper Reaches of Yangtze River, Water Conservancy Committee, Ministry of Water Resources, Chon |
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| Abstract: | Suspended sediments play an important role in the transformation process of pollutants in rivers.The adsorption characteristic of suspended sediments in Three Gorges Reservoir Area to phosphate was studied in this paper.Based on the indoor adsorption balancing experiment and kinetic modeling experiment,the main factors for adsorption process of sediments(particle size of sediment,initial concentration etc.) were discussed.The major results of the experiment were as follows:(1) Three kinds of suspended sediments with different particle sizes were used for the study of adsorption characteristic with different sediment concentration.The amount of phosphate adsorption increased with the increase of the sediment concentration and sediment particle size.(2) With the help of Langmuir isotherm theory,the related parameters in kinetic model were estimated,the experiment results indicated that the adsorption isotherm of phosphate in Three Gorges Reservoir Area fitted with the fifth type of Langmuir adsorption isotherm,the maximum amount of phosphate adsorption would emerge when the phosphate concentration was relatively high,but it would move down when the phosphate concentration increased afterwards.(3) Phosphate adsorption increased with the increase of initial phosphate concentration,the average time for adsorption balance was 2-4 hours. |
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| Keywords: | The Three Gorges Reservoir Area sediments phosphate adsorption characteristic |
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