摘要
疏浚工程中清淤泥浆的含水率通常非常高,常采用先脱水为泥饼再进行固化的方法,处理效率相对较低.为此选择普通硅酸盐水泥和硫铝酸盐水泥作为固化材料,结合絮凝材料和板框压滤技术,对太湖清淤泥浆进行脱水-固化一体化工艺研究.通过比阻试验和固化试验等手段,分析了该工艺中泥浆的脱水性能、固化效果的变化规律以及固化材料的损失情况.此外,还基于一体化工艺试验中泥浆的基本性质变化,讨论了固化材料流失的途径以及对泥浆脱水性能的影响机制.研究结果表明,采用脱水-固化一体化工艺能够改善清淤泥浆的粒径、压缩性,从而提高脱水特性,并且在工艺过程中固化材料的流失在9％以内,由于脱水泥饼性质更好,后续同样能够实现良好的固化效果.实际工程应用中,采用脱水固化一体化工艺可以提升泥浆处理的效率.
Abstract
In dredging projects,the water content of dredged mud is typically very high.The conventional method of dewatering and curing into mud cake has relatively low treatment efficiency.To address this issue,a study was conducted on the integrated dewatering-curing process of Taihu dredged mud.Ordinary Portland cement and calcium sulfoaluminate cement were chosen as curing materials,along with flocculants and plate and frame press filter technology.The study analyzed the dewatering performance of the slurry,the pattern of curing effect changes,and the loss of curing materials through specific resistance tests and curing tests.The pathway of curing material loss and its impact on the dewatering performance of the mud were discussed based on the fundamental property changes observed during the integrated process experiments.The results demonstrated that the integrated dewatering-curing process can enhance the dewatering characteristics by improving the particle size and compressibility of the dredged mud.The loss of curing material during the process was found to be less than 9％.The dewatering mud cake exhibited improved properties,resulting in effective curing effects.In practical engineering applications,the use of the integrated dewatering-curing process can enhance the efficiency of mud treatment.
国家科技期刊平台
NSTL
维普
万方数据