摘要
苏州河底泥中重金属的可动性模拟试验表明.沉积底泥能按照质量作用原理作为重金属的交换者起作用。霞金属Pb的交换溶出能力最低.Cd和Zh相似。苏州河是一条感潮河流,各潮期的潮流流动Re在(1.3l～j.8)×106范围,即为紊流流动.传质系数在(5.22～9.91)×10 4cm/s范围。在潮流作用下,60万m3底泥中重金属传递至河水中的量,以l天计,Cd为685.9函Pb为1505.9g,Zn为89.6kg,河水对底泥中莺金属的净化率,Cd为O.44％,Pb为0.0079％,Zn为0.05％。
The result of simulative test of heavy metal mobilization in sediment of Suzhou Creek showed that the sediment acted as an exchanger for heavy metal ions, according to the quality principle. The released capability of Pb was lowest, and Cd was similar asSuzhou Creek is a tidal river as turbulent flow, with Re in (1.31-5 8) 10 for each tide, and its transfer coefficient in (5.22-9.91) 10 cm/s.Under the action of stream by tide, amount of heavy metal in 600, 000 M^3 sediment transfer to river water was estimated.Transfer amount of Cd was 685. 9gm/d, Pb 1509. 9gm/d and Zn 89gm/d. Then the purification efficiency of heavy metal in sediment by stream will be: Cd 0.44％. Pb 0.0079％ and Zn 0.05％.
出处
《上海环境科学》
CAS
CSCD
1992年第9期9-12,共4页
Shanghai Environmental Sciences
