淤泥固化处理是指通过在淤泥中加入一定量的外掺剂，改善淤泥土的物理力学性能，以满足不同工程需要的一门技术，属土壤固化处理范畴。淤泥固化处理以其工艺简单、施工效率高、价格合理等优点，使其在实践中得到广泛的应用。
Sludge solidification treatment refers to a technology to improve the physical and mechanical properties of sludge by adding a certain amount of admixture into sludge to meet the needs of different projects. It belongs to the category of soil solidification treatment. Sludge solidification treatment has been widely used in practice because of its simple process, high construction efficiency and reasonable price.
淤泥中加入固化材料后，其物理性能将发生改变，这是因为淤泥与固化材料比重不同，有的固化材料比重大于淤泥，有的则相反，两者混合后，改变了淤泥比重；固化材料的加入往往消耗部分水分及有机质，生成新的物质，从而改变淤泥含水率、液塑限及流变性。
After the solidified material is added into the sludge, its physical properties will change. This is because the specific gravity of sludge and solidified material is different. Some solidified materials have a greater specific gravity than sludge, while others have the opposite. After the two are mixed, the specific gravity of sludge is changed; The addition of solidified materials often consumes part of water and organic matter to produce new substances, so as to change the water content, liquid plastic limit and rheology of sludge.