为了实现脱硫废水、粉煤灰的无害化及资源化利用。通过研究粉煤灰、水泥固化/稳定脱硫废水，并通过正三角形取值试验法得到了固化体的最佳质量配合比，在此基础上探究了不同脱硫废水对固化体抗压强度的影响，结果表明：固化体最佳质量配合比为水泥：粉煤灰：脱硫废水：河砂为1.03∶0.2∶0.5∶1。在最佳质量配合比下，不同水样制得的固化体在养护28 d后的抗压强度排序为内蒙古脱硫废水>山东脱硫废水>去离子水。3种脱硫废水固化体X射线衍射（XRD）和扫描电子显微镜（SEM）测试结果表明，脱硫废水中的氯离子与水泥中的3CaO·Al2O3反应生成了Friedel’s盐，其能有效提高固化体的密实性，进而提高固化体的抗压强度；脱硫废水制成的固化体中钙矾石与C-S-H凝胶相互交叉的结构提升了固化体的强度；以上2点也充分解释了不同水样所制得的固化体抗压强度间的差异。此外，抗压强度试验结果表明，去离子水、山东某电厂脱硫废水、内蒙古某电厂脱硫废水所制得固化体在养护28 d后的抗压强度满足《混凝土路缘石》（JC/T 899—2016）的要求，说明脱硫废水所制成的固化体可用于制作路缘石。

In order to realize the harmless and resource utilization of desulphurization wastewater and fly ash. In this study, the desulfurization wastewater was solidified / stabilized by fly ash and cement and the best mass mix ratio of solidified body was obtained through equilateral triangle value test method The effect of different desulfurization wastewater on the compressive strength of solidified body was studied. The results show that the best mass mix ratio of solidified body is cement : fly ash : desulphurization wastewater : river sand = 1.03∶0.2∶0.5∶1.Under the best mass mix ratio, the compressive strength of solidified bodies prepared from different water samples after curing for 28 days is in the order of Inner Mongolia desulfurization wastewater>Shandong desulfurization wastewater>deionized water. The test results of X-ray diffraction (XRD) and scanning electron microscope (SEM) of three kinds of desulfurization wastewater show that the chloride ion in desulfurization wastewater reacts with 3CaO·Al2C in cement to form Friedel’s salt, which can effectively improve the compactness of the solidified body, and then improve the compressive strength of the solidified body. And the cross structure of ettringite and C-S-H gel in the solidified body made of desulphurization wastewater enhances the strength of the solidified body. The above two points also fully explain the differences in compressive strength of solidified bodies made from different water samples. In addition, the compressive strength test results show that the compressive strength of the solidified body made of deionized water, desulphurization wastewater from a power plant in Shandong and desulphurization wastewater from a power plant in Inner Mongolia after 28 days of maintenance meets the requirement of “concrete kerb” (JC/T899—2016), indicating that the solidified body made of desulfurization wastewater can be used to make kerb.