SCION, Te Papa Tipu Innovation Park, 49 Sala Street, Rotorua 3046, New Zealand.
Bioresour Technol. 2013 Jul;140:227-33. doi: 10.1016/j.biortech.2013.04.114. Epub 2013 May 4.
The main objective of this study was to investigate the rheology of mixed primary and secondary sludge and its dependency on solid content and temperature. Results of this study showed that the temperature and solid concentration are critical parameters affecting the mixed sludge rheology. It was found that the yield stress increases with an increase in the sludge solid content and decreases with increasing temperature. The rheological behaviour of sludges was modelled using the Herschel-Bulkley model. The results of the model showed a good agreement with experimental data. Depending on the total solid content, the average error varied between 3.25% and 6.22%.
本研究的主要目的是研究混合原污泥和次生污泥的流变性及其对固含量和温度的依赖性。研究结果表明，温度和固浓度是影响混合污泥流变性的关键参数。发现屈服应力随污泥固含量的增加而增加，随温度的升高而降低。使用赫谢尔-布尔克里模型对污泥的流变行为进行了建模。模型的结果与实验数据吻合较好。根据总固体含量，平均误差在 3.25%到 6.22%之间变化。
