| 高浓度悬浮液的混凝实验及机理研究 |
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| 引用本文： | 刘利,湛含辉,王晓,母玉敏.高浓度悬浮液的混凝实验及机理研究[J].化工环保,2013,33(3):198-201. |
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| 作者姓名： | 刘利 湛含辉 王晓 母玉敏 |
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| 作者单位： | 1.中国矿业大学，环境与测绘学院，江苏，徐州?221116;
2.安徽理工大学，地球与环境学院，安徽，淮南232001 |
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| 基金项目： | 江苏省水利科技资助项目 |
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| 摘 要： | 进行了高浓度悬浮液的混凝实验研究。为研究混合阶段渐变剪切速率对混凝沉降效果的影响，在混合阶段分别采用固定搅拌转速和渐变搅拌转速进行实验。在混合阶段采用固定搅拌转速，当搅拌转速为210r/min时，絮体二维分形维数最高为1.8847，悬浮液浊度最低为118NTU。采用渐变搅拌转速的方法，由210r/min开始逐渐降低搅拌转速，絮体二维分形维数最大，为1.9205，处理后悬浮液浊度最小，为107NTU。在一般混凝沉降过程的规律及模型的基础上，提出了高浓度悬浮液混凝沉降过程的物理模型。
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| 关 键 词： | 悬浮液 剪切力 絮体 分形维数 混凝机理 模型 废水处理 |
| 收稿时间： | 2013-06-25 |
Experiment and Mechanism Research on Coagulation of High Concentration Suspension |
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| Liu Li
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Zhan Hanhui
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Wang Xiao
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Mu Yumin.Experiment and Mechanism Research on Coagulation of High Concentration Suspension[J].Environmental Protection of Chemical Industry,2013,33(3):198-201. |
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| Authors: | Liu Li Zhan Hanhui Wang Xiao Mu Yumin |
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| Institution: | 1. School of Environment Science and Spatial Informatics,China University of Mining and Technology,Xuzhou Jiangsu 221116,China;
2. School of Earth and Environment,Anhui University of Science and Technology,Huainan Anhui 232001,China |
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| Abstract: | The experiment on coagulation of high concentration suspension was carried out. The effects of gradual shear rate on coagulation and settling at the mixing stage were studied by mixing with fixed and graded stirring speed respectively. With fixed stirring,when the stirring speed is 210 r/min,the highest two-dimensional fractal dimension is 1.884 7,and the lowest turbidity of the suspension is 118 NTU. With graded stirring,when the stirring speed is gradual reduced from 210 r/min,the highest two-dimensional fractal dimension is 1.920 5,and the lowest turbidity is 107 NTU. A physical model applied to the coagulation and settling process of high concentration suspension is put forward based on the basic law and model for general coagulation process. |
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| Keywords: | suspension shear stress floc fractal dimension coagulation mechanism model wastewater treatment |
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