白洋淀疏浚底泥电渗真空预压试验研究

Experimental study on electroosmosis vacuum preloading for dredged sediment of Lake Baiyangdian

为了寻求吹填湖库底泥技术可行、经济合理、环境合规的脱水处理方案,以白洋淀疏浚底泥为研究对象,采用模型试验、中试试验和应用示范的系统化工程研究方法,进行电渗真空预压技术的试验研究,结果表明:电渗真空预压技术成熟,脱水效果明显优于真空预压,双面排水脱水效果明显优于单面排水,比真空预压技术的脱水费用高约13,满足生态合规性要求,便于进行后续资源化利用。研究成果可为工程设计施工提供技术依据。

To seek a technically feasible,economical,and environmentally compliant dewatering treatment scheme for dredged sediment of lakes and reservoirs,this study takes the dredged sediment of Lake Baiyangdian as the research object for the experiment on electroosmotic vacuum preloading technology by systematic engineering research methods of model tests,pilot tests,and application demonstration.The results reveal that the electroosmotic vacuum preloading technology is mature and extraordinarily outperforms vacuum preloading in dewatering,and the dewatering effect of double-sided drainage is significantly better than that of single-sided drainage.In addition,the cost of electroosmotic vacuum preloading technology is about 13 higher than that of vacuum preloading technology.The technology meets the requirements of ecological compliance and can be used for subsequent resource utilization.The research results can provide a technical basis for engineering design and construction.