Studying On The Migration Mechanism Of Lead In Soil And The Treatment Of Lead Waste Water

Behavior characterstics of the lead,which is one of heavy metal pollutant caused great affect for environment and human health. Choose mankind's survival of soil-water system as a research environment. The use of static and dynamic conbination of experimental methods. The lead ion of the soil-water system migration, distribution,the substance interchanges pattern between the liquid phase and solid phase are researched. Revealed lead in soil distribution. According to the study lead to groundwater pollution,this result can protection of groundwater against pollution,which is of great theoretical and practical value. Research is indicated. Loess have very high adsorption ability to lead pollutants, static adsorption capacity is up to 99.86mg/g.Lead mainly adsorbed on the surface of soil,soil adsorption of lead has the direct relation with pH value and leaching liquid lead contents. In the different soil layers,its have the different adsorption to the same concentration lead liquid. In the different pH value and concentration of lead waste water,the same soil has different adsorption capacity to the lead waste water. This not only for the study of soil adsorption of lead provided the experimentsl basis,also for the understanding and appreciation of the soil in the distribution and migration provide theoretical guidance. Meanwhile presented and analyzed theoretically ion exchange and adsorption principle of the ligand exchange in the solid-liquid seperation of lead. Moreover one kind of removal of lead material are prepared. The conditional experiments show:Ion exchange resins has a high removal of lead capability . It's capability that removal of lead up to 0.4997g/g. and the removal lead agent that based on the ion exchange and adsorption preparation in producing simple, This material has a high selectivity for the lead and without secondary pollution can be circulating used,and conomic benefit. Comprehensive this experiment present the resin regeneration and establishment of ion exchange and adsorption removal of lead kinetics. The results settled theoretic fundation for removal of lead reseach.