城市内河底泥物理–矿物成分–污染性状关联性试验研究  

Experimental study on physical-mineral composition-pollution behaviour interrelations of urban river sediments

作　　者：王钢[1] 吉锋 曾玲玲 崔慧贞 WANG Gang;JI Feng;ZENG Ling-ling;CUI Hui-zhen(College of Civil Engineering,Fuzhou University,Fuzhou 350108,China;Jiangsu Water Resource Co.,Ltd.of the Eastern Route of the South-to-North Water Transfer Project,Nanjing 210029,China;College of Civil Engineering,Zhejiang University of Technology,Hangzhou 310023,China;Taizhou City Pollution Control Engineering Technology Center,Taizhou 318001,China)

机构地区：[1]福州大学土木工程学院,福建福州350108 [2]南水北调东线江苏水源有限责任公司,江苏南京210029 [3]浙江工业大学土木工程学院,浙江杭州310023 [4]台州市污染防治工程技术中心,浙江台州318001

出　　处：《岩土工程学报》2022年第12期2327-2334,共8页Chinese Journal of Geotechnical Engineering

摘　　要：针对福州市晋安区5处物理化学性状不同的代表性内河河道底泥,进行了颗粒分析、黏土矿物成分、界限含水率、烧失量、总氮总磷和重金属测定试验,结合收集的相关文献数据,系统分析了底泥物理–矿物成分与污染物的相互影响。结果表明:河湖库底泥中的污染物不仅与污染源相关,也与底泥颗粒级配和黏土矿物成分有关;底泥中的有机质、总氮、重金属含量与底泥中细颗粒含量的相关性较高,黏粒中的蒙脱石黏土矿物吸附和贮存污染物能力较强;底泥中有机质含量与总氮、总磷含量以及重金属含量之间均具有良好的相关性。River and lake pollution is a seriously environmental problem in China.In this study,the particle analysis,clay mineral composition,Atterberg limits,loss of ignition,total nitrogen,total phosphorus and heavy metals tests are carried out for five representative sediments with different physical and chemical properties in Jin'an District,Fuzhou.By considering the collected data from literatures,the interrelations among physical properties,clay minerals and pollutants of sediments are investigated.The results show that the pollutants in the sediments are related to the pollution source and the particle gradation and clay mineral composition of the sediments.The organic matter,total nitrogen and heavy metals in the sediments are highly correlated with fine particle content in the sediments.The smectite clay mineral is conducive to the adsorption and storage of pollutants.There is a good correlation among the organic matter,total nitrogen,total phosphorus and heavy metal content in the sediments.

关 键 词：底泥 颗粒级配 黏土矿物 污染物 物理性质 

分 类 号：TU411[建筑科学—岩土工程]