Vertical Distribution and Dynamic Release Characteristics of Pollutants from Resuspended Sediment
The pollutant-containing sediments are subjected to re-suspension due to complex hydrodynamics.This study focuses on the relationship of vertical distributions between pollutants and re-suspended sediment.The transportation processes of resuspended sediment on a series of uniform flow were conducted in a flume.Reactive tracer (phosphorus) was used as the contaminants in fine-grained sediments in order to indentify the release characteristic length and time.Experimental results showed that the suspended solid concentration (SSC) decreased with the distance,water depth and particle grain size.TP concentration changed along the water depth as SSC on the initial re-suspension stage,which appears two obvious concentration regimes:the upper low-concentration layer and the high-concentration near-bottom layer.This layered phenomenon lasted about 3 hours until SSC distribution tended to be uniformed.
H.-W.ZHU D.-Z.WANG P.-D.CHENG B.-C.ZHONG
Shanghai Institute of Applied Mathematics and Mechanics, Shanghai Key Laboratory of Mechanics in Energy Engineering, Shanghai University, 149 Yanchang Road, Shanghai, 200072,P.R.China
国际会议
Sixth International Conference on Nonlinear Mechanics(第六届国际非线性力学会议)(ICNM-VI)
上海
英文
478-481
2013-08-01（万方平台首次上网日期，不代表论文的发表时间）