摘要
重点阐述了沉积物的来源和组成,沉积物的颗粒粒径、有机物含量(VSS/SS)、颗粒粘性和颗粒密度等物化性质,以及附着于沉积物上的金属污染物的相关特征。其粒度分布范围是D10为1.89～223.21μm,D50为12.38～437.30μm,D90为39.06～1 572.52μm;VSS/SS的范围是1%～38%;密度范围是1.80～2.47 g/cm3。金属污染物主要的附着对象是沉积物中的细小颗粒如生物膜上。以上沉积物性质对于解决排水系统的泥沙淤积问题以及水体污染的控制都具有重要意义。
Sewer sediments in urban sewer systems will do significant harm to environment, causing serious problems. This paper reports on the source and components of sewer sediments, the nature of sediments including, particle size distributions, or- ganic content（ VSS/SS）, viscosity and density etc. , as well as the characteristics of pollutants adhered to sediments. The particle size distribution of sediments, D10 ranges from 1.89 pure to 223.21 μm, DS0 ranges from 12.38 μm to 437. 30 pure, D90 ranges from 39. 06 μm to 1572. 52μm. VSS/SS varies from 1% to 38% and the density is 1.80 -2. 47 g/cm3. Pollutants mostly adhere to fine particles such as bio - film. Such characteristics of sewer sediments play an important role in solving the problems of sedi- ments in sewer system and receiving water nollution.
出处
《环境科学与管理》
CAS
2013年第3期55-58,共4页
Environmental Science and Management
关键词
排水系统
淤积
沉积物
粒度分布
urban sewer system
deposition
sediment
particle size distribution
