环保疏浚联合土工管袋工艺在重金属污染底泥处理中的应用  

Geotextile tubes technology for dewatering and volume reduction of sediments polluted by heavy metals and its engineering case

作　　者：马广翔 刘帅 刘红燕 黄理龙 马涛 陈华东 刘剑 MA Guangxiang;LIU Shuai;LIU Hongyan;HUANG Lilong;MA Tao;CHEN Huadong;LIU Jian(Shandong Huankeyuan Environmental Engineering Co.,Ltd,Jinan 250013,China;Jining Ecological environment Bureau Rencheng District Branch,Jining 272000,China;Shandong Academy of Environmental Science Co.,Ltd,Jinan 250013,China;Zhongkehualu Soil Restoration Co.,Ltd,Dezhou 254300,China)

机构地区：[1]山东省环科院环境工程有限公司,济南250013 [2]济宁市生态环境局任城区分局,济宁272000 [3]山东省环境保护科学研究设计院有限公司,济南250013 [4]中科华鲁土壤修复有限公司,德州254300

出　　处：《环境工程学报》2021年第11期3773-3780,共8页Chinese Journal of Environmental Engineering

基　　金：山东省重点研发计划项目(2018YFJH0902,2020CXGC011406)。

摘　　要：利用环保疏浚联合土工管袋脱水减容工艺治理某重金属污染河道底泥,考察了该工艺对底泥重金属污染治理的工程应用效果。该工程实施的内容包括:环保疏浚工程、土工管袋脱水工程、底泥加药系统设计实施及尾水处理工程设计实施。结果表明:经过上述联合工艺处理后,底泥的污泥比阻可下降至少80%;硫酰胺类共聚物(ES)稳定剂对重金属Cr和Hg的稳定化率可分别控制在80%~93%和60%~73%。工程实施效果表明,该工艺可实现河道底泥的有效治理,可为该技术在重金属污染底泥处理中的规模化应用提供参考。Using the treatment project of sediment in a certain river polluted by heavy metals in Shandong Province,the application of environment-friendly dredging with geotextile tubes on dewatering and volume reduction of sediment were investigated.The project mainly included:environment-friendly dredging engineering,geotechnical pipe bag dewatering works,doing system design of sediment and tail water treatment engineering design.The engineering operation results show that the sludge specific resistance of bottom mud can be reduced by more than 80%by adding flocculating agent.The stabilization rates of ES stabilizer for Cr and Hg were 80%~93%and 60%~73%,respectively.The successful implementation of this project provided a foundation for the large-scale application of this technology in treatment of heavy metal contaminated sediment in the future.

关 键 词：重金属污染 河道底泥 环保疏浚 土工管袋 脱水减容 

分 类 号：X522[环境科学与工程—环境工程]