| 湖流作用下太湖底泥再悬浮和NH4-N释放规律研究 |
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| 引用本文： | 王忖,王超.湖流作用下太湖底泥再悬浮和NH4-N释放规律研究[J].环境保护科学,2011,37(2):7-9,13. |
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| 作者姓名： | 王忖 王超 |
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| 作者单位： | 1. 河海大学浅水湖泊综合治理与资源开发教育部重点实验室,南京,210098;河海大学力学与材料学院,南京,210098
2. 河海大学浅水湖泊综合治理与资源开发教育部重点实验室,南京,210098;河海大学环境学院,南京,210098 |
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| 基金项目： | 国家重点基础研究发展计划(973)项目(2008CB418203)资助; 浅水湖泊综合治理与资源开发教育部重点实验室(2084/409290)资助 |
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| 摘 要： | 在矩形水槽中模拟了太湖底泥起动再悬浮规律,分析了湖流流速对太湖底泥再悬浮及NH4-N释放的作用规律.结果显示:当流速小于20 cm/s时,底泥并未发生大量悬浮,水体中浊度及NH4-N浓度变化不大;当流速大于40cm/s时,底泥发生大规模悬浮,水体中浊度和NH4-N浓度显著提高.试验以少量动作为底泥起动的标准,得出太湖底...
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| 关 键 词： | 太湖底泥 再悬浮 起动流速 临界切应力 浊度 |
Study on Resuspension and NH_4-N Release of Taihu Lake Sediment under Current Flow |
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| Abstract: | The resuspension principle of Taihu Lake sediments was simulated in a rectangular tank.The effect of flow velocity on Taihu Lake sediment resuspension and NH4-N release was analyzed.The results show that the sediment does not happen a lot suspension,water turbidity and NH4-N concentrations change little on the condition of the velocity less than 20 cm/s;the mass of sediment suspends,as well as water turbidity and NH4-N concentration significantly increase when the velocity is more than 40 cm/s.Through the s... |
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| Keywords: | Taihu Lake Sediment Resuspension Starting Velocity Critical Shear Stress Turbidity |
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