摘要
通过研究地下水中硫酸根离子通过弱透水层时迁移特征的变异规律及其环境效应作用,分析在不同黏性土壤厚度条件下硫酸根离子浓度的变化及其受pH、Eh、钙离子浓度变化的影响特征,以及在不同pH值条件下硫酸根离子的浓度变化情况。利用土柱填装及淋滤法,得出地下水中硫酸根离子通过弱透水层时穿透能力很强的结论,并揭示了硫酸根离子浓度随渗透土壤厚度的增大而增大,随淋滤液pH值增大而减小的规律。
Through the variation regulation of migration characteristics when the sulfate ions in groundwater passed aquitard and its environmental effects,the authors analyzed the changes of sulfate ions concentration under different thickness of cohesive soil and the characteristics affected by pH,Eh and calcium concentration,and the concentration variation of sulfate irons in different pH values.It is concluded that the penetration ability of sulfate ions passing aquitard in groundwater was strong by means of soil column filling and leaching method,which revealed that the sulfate ion concentration increased with the increasing of the thickness of soil,and decreased with the increasing of pH value in leachate.
出处
《世界地质》
CAS
CSCD
2010年第4期658-662,共5页
World Geology
基金
国家自然科学基金项目(40872154)
