Distribution Characters And Countermeasures Of Pb In A Lead-acid Battery Contaminated Site

Lead-acid battery production is the domestic lead consumption of the most important industry.The regional distribution of lead pollutants is mainly studied at home and abroad,but the research on the distribution law of pollutants in the site and the repair countermeasures is still insufficient.In this paper,relying on two lead-acid battery production site investigation projects,the research on the distribution characters of Pb was conducted by data collection,field sampling survey,data analysis.The research results show that the soil of lead-acid battery production site is generally alkaline and the main pollutant is lead.The lead-acid battery production site is a serious lead pollution disaster area.Due to the interference of historical production technology,process and human factors,the sample data of Pb content in the soil of the site has serious skew characteristics.The main manifestations are: lead pollution in other areas of > in the production area,non-disturbance in the anthropogenic disturbance area >,and the pollution degree decreases with the increase of distance.The hardened concrete ground has excellent barrier effect against the longitudinal migration of lead.The scope of lead pollution is mainly exposed soil,and the pollution depth is mainly concentrated in the surface soil pollution.The distribution of lead in the surface soil decreases with the increase of the depth.Through risk assessment of the site and comprehensive consideration of technical maturity,treatment effect,repair time,repair cost,environmental impact of the repair project and other factors,through preliminary comparison and selection,this paper proposes the stabilization/solidification or blocking landfill restoration technology as the site contaminated soil restoration countermeasures.It is intended to provide a basis for the prevention and treatment of similar site pollution.