固化污泥工程力学与微观特性综合应用研究

Comprehensive Application Research on the Mechanical and Microscopic Characteristics of Solidified Sludge Engineering

摘要: 随着工业化和城市化进程加速，污泥处理成为环境保护重要课题。本文将污泥处理后与固化剂按特定配比制成试块，在养护28天后对试块进行测试。通过宏观试验测定污泥含水率、试块应力应变等物理性质；微观试验采用X射线衍射、比表面及孔径分析、FTIR傅里叶红外光谱等技术，观察污泥及试块结构、比表面积及孔径大小、化学成分。对污泥试块进行强度特性分析，表明其为塑性材料；X射线衍射结果显示，污泥试块与原样有多种物相，固化剂反应程度高；比表面及孔径分析表明，试块孔道尺寸小、孔径少、比表面积增大，与X射线衍射结果相符；FTIR傅里叶红外光谱分析证明，养护期间污泥发生多种官能团化学变化，提高稳定性并形成新矿物相。综合来看，这种研究方法为污泥处理、处置和资源化利用提供科学准确依据，推动污泥处理技术发展创新。

Abstract: With the acceleration of industrialization and urbanization, sludge treatment has become an important issue for environmental protection. This article will mix the treated sludge with a solidifying agent in a specific ratio to make test blocks, and test the test blocks after 28 days of solidification. Measure the physical properties of sludge through macroscopic experiments, such as the moisture content and stress-strain of test blocks; Microscopic experiments use techniques such as X-ray diffraction, specific surface area and pore size analysis, Fourier transform infrared spectroscopy, etc. to observe the structure, specific surface area, pore size, and chemical composition of sludge and test blocks, and conduct strength characteristic analysis on the sludge test block, indicating that it is a plastic material; The X-ray diffraction results indicate that there are multiple phases between the sludge test block and the original sample, and the curing agent has a high degree of reaction; The analysis of surface area and pore size shows that the pore size of the test block is small, and the pore size is small, resulting in an increase in specific surface area, which is consistent with the X-ray diffraction results; Fourier transform infrared spectroscopy analysis proves that sludge undergoes various functional group chemical changes during maintenance, improving stability and forming new mineral phases. Overall, this research method provides a scientific and accurate basis for sludge treatment, disposal, and resource utilization, promoting the development and innovation of sludge treatment technology.