给水厂浓缩污泥的稳态流变特征研究
Steady rheological characteristics of the concentrated water treatment residuals(CWTR)
针对给水厂浓缩污泥，采用旋转流变仪研究了其稳态流变特性，分别探讨了污泥的典型流变图、污泥浓度和温度对其极限粘度的影响。结果表明，污泥具有触变及剪切变稀的性质，其极限粘度(η∞)与污泥浓度(TS)的关系符合指数关系，可用方程η∞=24.43-494.62e-0.14TSS描述。极限粘度与温度的关系服从于阿伦尼乌斯公式，相应的反应活化能为14.91J/mol。此外，宾汉模型可以描述污泥的流变性质，屈服应力随污泥浓度的升高而增加。
he steady rheological characteristics of the concentrated water treatment residuals (CWTRs) were studied with a rotational rheometer, including the typical rheograms of CWTR, effects of both the CWTR concentration (TSS) and temperature on their limit viscosity, respectively. The results showed that the CWTR has a thixotropic and shear thinning property, and an exponential relationship, η∞=24.43-494.62e-0.14TSS, was observed between the limit viscosity (η∞) and TSS. Moreover, the variation of lgη∞ with reverse temperature can be expressed well with the Arrhenius equation, and the corresponding activation energy was equal to 14.91J/mol. In addition, Bingham model could describe the rheological properties of the CWTR, and the yield stress values increased with the increase of TSS.
王毅力、董玉婧
环境科学理论环境科学技术现状环境污染、环境污染防治
环境工程给水厂浓缩污泥稳态流变学极限粘度宾汉模型
Environmental EngineeringConcentrated water treatment residuals(CWTR)Steady rheologyLimit viscosityBingham model
王毅力,董玉婧.给水厂浓缩污泥的稳态流变特征研究[EB/OL].(2011-05-09)[2025-08-04].http://www.paper.edu.cn/releasepaper/content/201105-189.点此复制
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