佛山市汾江河疏浚淤泥固化试验研究  

Experimental Study on Solidification Treatment of Dredged Silt from Fenjiang River

作　　者：罗旺兴 陈繁忠[2] 叶挺进 郭绍东[3] 周海珍 

机构地区：[1]佛山市水业集团有限公司,广东佛山528305 [2]中国科学院广州地球化学研究所,广东广州510640 [3]哈尔滨工业大学市政环境工程学院,黑龙江哈尔滨150090

出　　处：《中国给水排水》2013年第19期92-96,共5页China Water & Wastewater

基　　金：佛山市院市合作项目(2010YS005)

摘　　要：汾江河疏浚淤泥的含水率和有机质含量均较高，为了使其达到填埋要求，研究了水泥、石灰和高炉矿渣的单一或组合固化效果。结果表明，随着固化时间的延长，固化淤泥的含水率降低，无侧限抗压强度（UCS）升高；当采用单一固化材料时，水泥和石灰对淤泥的固化效果显著，而高炉矿渣的固化效果不明显；当水泥和石灰的掺入量均为5％、高炉矿渣的掺入量为15％～20％时，固化淤泥的含水率及无侧限抗压强度能达到填埋要求。另外，通过测定浸出液中的重金属浓度发现，水泥、石灰和高炉矿渣复合固化剂对淤泥中的重金属具有一定的固定效果。Water and organic matter content in the dredged silt from Fenjiang River were in excess of requirements. Cement, lime, blast furnace slag and their combinations were utilized to study the comprehensive effects of solidification as single or multiple inorganic curing material. The results showed that the moisture content of the solidified silt decreased and the unconfined compressive strength （UCS） in- creased with solidification time. Used separately, cement and lime had remarkable solidification effects on the dredged silt, while blast furnace slag had little solidification effect. When the mixing ratios of cement, lime and blast furnace slag were 5% , 5% and 15% to 20% , respectively, the moisture content and UCS of the solidified silt could meet the requirements of landfill. By using inductively coupled plasma mass spectroscopy （ICP-MS） to determine the concentration of heavy metals in leaching liquid from the solidified silt. It was found that cement, lime and blast furnace slag had certain a solidifying effect on the heavy metals.

关 键 词：疏浚淤泥 固化 水泥 石灰 高炉矿渣 无侧限抗压强度 

分 类 号：X705[环境科学与工程—环境工程]