文献类型：期刊文献

中文题名：多环芳烃在天然水体中的自净机理研究——悬浮物沉降机理研究

英文题名：Study on self purification mechanism for PAHs in natural water system ——study on sedimentation of mechanism of suspended solids

作者：李咏梅[1];王郁[1];林逢凯[1];胥峥[1]

机构：[1]华东理工大学环境工程系

年份：1997

卷号：17

期号：4

起止页码：381

中文期刊名：中国环境科学

外文期刊名：China Environmental Science

收录：CSTPCD;;EI(收录号：1998104400010);Scopus;北大核心:【北大核心1996】；CSSCI:【CSSCI1998】；CSCD:【CSCD2011_2012】；

基金：国家自然科学基金

语种：中文

中文关键词：沉积悬浮物;沉降机理;多环芳烃;天然水体;自净

外文关键词：suspended solid,sedimentation mechanism,coagulation sedimentation.

摘要：以黄浦江、淀山湖底泥为沉积悬浮物的代表，研究静态条件下天然水体中悬浮物的沉降机理。结果表明，黄浦江底泥的有机质含量大于淀山湖底泥；底泥颗粒十分细小，且表面不均匀；两种底泥悬浮物的沉降类型均属于絮凝沉降，黄浦江底泥的沉降速度较淀山湖底泥快，有机质在絮凝过程中起着粘连架桥的作用。
The sediments in Huangpu River and Dianshan Lake were chosen as suspended solids.The physical properties and sedimentation mechanism of two kinds of suspended particles were determined.The results show that the content of organic matter in the sediment of Huangpu River is higher than that of Dianshan Lake.The particles are very tiny and their sruface is uneven.The sedimentation type is classified as coagulation sedimentation for both suspended particles;and the settling velocity of suspended solids in Huangpu River is faster than that in Dianshan Lake.Organic matter is the main factor as bridge formation to enlarge suspended particles in the coagulation process.