摘要
在徐州市4座生活垃圾填埋场地下水及渗滤液典型重金属污染物研究的基础上,采用实验室土柱模拟对9种典型重金属迁移演化规律进行研究分析。结果表明,Mn在岩溶地区更容易被有机质溶出、随地下水富集并迁移;Fe,Ba容易被包气带吸附不易迁移进入地下水;Pb虽然容易被包气带吸附,但其地下水迁移演化规律同Zn一样都较为复杂;防渗层不能很好的防止Mo和As迁移演化进入地下水;地基层厚度或其它防渗措施可有效防止Co迁移演化进入地下水;Tl地下水污染质量浓度与垃圾填埋年限是否呈正相关关系,有待进一步研究。
Based on research of typical heavy metal pollutants of groundwater and leachate of four municipal solid waste landfill in Xuzhou, the laboratory soil column simulation was used to analyze migration and transformation of 9 heavy metals.The results show that Mn in karst region is easier dissoluted by organic matter, enriched and migrated along with the groundwater. Fe and Ba are easier adsorbed by aeration zone and not easy to be migrated into groundwater. Pb is easier adsorbed by aeration zone, but the migration of groundwater evolution as well as Zn are more complicated. Impermeable layer cannot well prevent Mo and As evolution flowing into the groundwater migration. The thickness of the basal soil layer or other seepage control measures can effectively prevent Co entering into the groundwater. Whether if Tl concentration of groundwater pollution correlated with fixed number of year of the landfill basic relationship, need further research.
出处
《环境科技》
2015年第6期30-33,39,共5页
Environmental Science and Technology
基金
江苏省环境监测科研基金项目(1311)
