水体底泥对污染物的吸附-解吸机理的研究

水体底泥污染已经成为世界范围内的一个重要的环境问题,其污染物主要通过大气沉降、废水排放、雨水淋溶冲刷等进入水体,最后沉积到底泥中并逐渐富集,使底泥受到严重污染。吸附-解吸是底泥污染的重要过程,为了控制水体底泥污染,对底泥对各种污染物的吸附-解吸机理及其影响因素的研究显得极其重要。本文总结了底泥中氮、磷和重金属等的吸附-解吸的影响因素及机理,对今后水体底泥污染方面的研究具有重要意义。

Study of Adsorption and Desorption Mechanism of Sediment on Pollutants

The contamination of sediment in water body has became a worldwide environmental problem. The pollutants come into rivers and lakes through atmospheric sedimentation, waste water discharge and rainwater erosion, eventually accumulated in sediment and make the sediment heavily contaminated. Adsorption and desorption are major processes of the sediment contamination. In order to control sediment contamination, it is important to learn the mechanism and influencing factors of the processes. In this paper, the influencing factors and mechanisms of adsorption and desorption of sediment on nitrogen, phosphorus and heavy metal are summarized. It is of great significance for water sediment pollution studies in the future.