模拟密集厌氧消化污泥的触变分解行为

IF 5.8 4区工程技术 Q1 MECHANICS

Applied Rheology Pub Date : 2022-01-01 DOI:10.1515/arh-2022-0121

M. Terashima, Yoko Kotegawa, Meng Sun, Bing Liu, H. Yasui

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引用次数: 0

摘要

摘要厌氧消化池中污泥的流动曲线会影响污泥的混合和均质。本研究的目的是用数学方法表达表现为触变和假塑性流体的致密厌氧消化污泥的流动曲线。使用二阶动力学方程对两个假塑性参数（即稠度指数（µp）和假塑性指数（n））因剪切而发生的随时间变化进行建模，该方程的系数包括剪切应变率的幂函数。计算结果与实验结果一致。与其他动力学参数不同，剪切后产生最终值的动力学参数与污泥浓度有关。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Modeling thixotropic break-down behavior of dense anaerobically digested sludge

Abstract Mixing and homogenization in anaerobic digesters are affected by the flow curve of sludge. The aim of this study is to mathematically express the flow curve of dense anaerobically digested sludge behaving as thixotropic and pseudoplastic fluids. Time-dependent changes in two pseudoplastic parameters, i.e., consistency index (µ p) and pseudoplastic index (n), by shear are modeled using a second-order kinetic equation with a coefficient that includes the power function of the shear strain rate. The calculated results are consistent with the experimental results. The kinetic parameters that yielded the ultimate values after shearing were associated with the sludge concentration, unlike the other kinetic parameters.

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来源期刊

Applied Rheology 物理-力学

CiteScore

3.00

自引率

5.60%

发文量

审稿时长

>12 weeks

期刊介绍： Applied Rheology is a peer-reviewed, open access, electronic journal devoted to the publication in the field of applied rheology. The journal provides the readers with free, instant, and permanent access to all content worldwide; and the authors with extensive promotion of published articles, long-time preservation, language-correction services, no space constraints and immediate publication.