【摘要】 本文着重探讨城市河流中铬(Ⅲ)的迁移、沉积和溶出规律,以野外实测及模拟试验数据论证了水中悬浮物的吸附是铬沉降到底泥中的主要途径。发现铬污染物沉积至底泥的量是呈等比级数规律增加的,但底泥中的铬一般不易被水解吸,不会造成对水质的影响。更多还原

【Abstract】 The transport, deposition and liberation of chromium (Ⅲ) as pollutant in urban river have been studied. The data cbtained on the spot and under laboratory simulating conditions showed that the major way of chromium (Ⅲ) subsided to the Sediment is adsorption of chromium by the suspended matter in water.It was found that the amount of chromium (Ⅲ) deposited in the sediment increases according to a geometrical progression, and that the chromium (Ⅲ) in the sediment is not liberated by water flow, therefore it does not have influence on water quality.更多还原