摘要
系统分析红城湖底泥样品的物理参数、营养参数和污染物,能够为底泥的合理利用提供理论支撑。采用潜在生态危害指数评价法对底泥重金属污染情况进行评价,评价结果表明:测试底泥污染度(C d)>8,潜在生态风险指数(RI)>150,属于污染水平,重金属污染程度依次镉>锌>镍>铅>砷>总铬>汞>铜。综合分析底泥物性参数、营养参数和污染物水平,红城湖底泥可做公路用土和建筑用土利用。按照底泥∶水泥∶石灰=60∶20∶20比例进行掺杂固化7 d后,按照土工实验规范测试抗压强度,实验结果表明固化后底泥均达到各级公路用水泥稳定土抗压强度要求。
The systematic analysis of the physical parameters,nutrient parameters and pollutants in the sediment samples of Hongcheng lake can provide theoretical support for the rational utilization of the bottom mud.The potential ecological hazard index method was used to evaluate the heavy metal pollution in sediment.The evaluation results show that C d(pollution degree)>8,RI(potential ecological risk index)>150 reached the pollution level.The pollution degree of heavy metals is in the order of Cd>Zn>Ni>Pb>As>Cr>Hg>Cu.Based on the comprehensive analysis of sediment physical properties,nutrient parameters and pollutant levels,the sediment of Hongcheng Lake can be used as road soil and construction soil.After 7 days of doping solidification according to the ratio of sediment to cement to lime is 60∶20∶20,the compressive strength was tested according to the geotechnical test specifications.The experimental results show that the solidified sediments meet the compressive strength requirements of cement stabilized soil for highways at all levels.
作者
王向辉
刘又华
马晓旭
李莹莹
史载锋
刘艳玲
WANG Xiang-hui;LIU You-hua;MA Xiao-xu;LI Ying-ying;SHI Zai-feng;LIU Yan-ling(Key Laboratory of Water Pollution Treatment and Resource Reuse,College of Chemistry and Chemical Engineering,Hainan Normal University,Haikou 571158,China)
出处
《科学技术与工程》
北大核心
2020年第3期1271-1276,共6页
Science Technology and Engineering
基金
海南省重点研发计划(ZDYF2018170)。
关键词
红城湖
底泥
重金属
资源化利用
Hongcheng lake
bottom muddy
heavy metal
resource utilization
作者简介
第一作者:王向辉(1982-),男,汉族,河北沧州人,博士,副教授。研究方向:土壤污染防治与资源化和精细化学品开发。E-mail:god820403@163.com;通信作者:刘艳玲(1978-),女,汉族,黑龙江齐齐哈尔人,博士,教授。研究方向:功能材料。E-mail:liuyl7809@163.com。
