Study on Three-Dimensional Micro-porosity of Solidified Sludge Under Biodegradation Based on ArcGIS Technology
The macroscopic mechanical properties of solidified sludge are determined by its microstructure. However, microorganisms can biodegrade organics, which influences the microstructure of solidified sludge. The SEM image of solidified sludge was analyzed to study its three-dimensional (3D) qualitative and quantitative microstructure using ArcGIS technology. The results show that 3D micro-porosity can be extracted by ArcGIS technology, where it is not affected by the threshold selection and produces more reasonable results. 3D micro-porosity increases gradually with the biodegradation time, and a relationship between them can be expressed by a modified hyperbolic model. The change of 3D micro-porosity is determined by the internal organics biodegradation of solidified sludge.
KeywordsSolidified sludge SEM ArcGIS technology 3D micro-porosity
This study was supported by the National Natural Science Foundation of China (51478167).
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