摘要
通过渗透试验、吸附试验和高压动态土柱试验对氨氮在弱透水层中的渗透、迁移转化规律进行研究。试验结果表明,弱透水层对氨氮具有很强的吸附能力;弱透水层中生物作用微弱,弱透水层对氨氮的去除主要是非生物作用的结果;硬度或其他交换性离子的作用会影响氨氮在弱透水层的穿透时间和吸附稳定性。此研究对揭示深层地下水的氮污染规律及探索地下水污染修复提供理论支持。
Permeability test,adsorption test and high-pressure soil column test were carried out to research the permeation,migration and transformation law of ammonia nitrogen in the aquitard.The results indicat that aquitard show a strong ammonia nitrogen adsorption capacity,the biological action in aquitard is weak and the removal of ammonia nitrogen is mainly due to non-biological action,water hardness or other exchangeable ions would affect the breakthrough time and adsorption stability of ammonia nitrogen in aquitard.This study provides theoretical support for the reveal of nitrogen pollution rules in the deep groundwater and the exploration on restoration of groundwater pollution.
出处
《水文》
CSCD
北大核心
2011年第3期71-75,共5页
Journal of China Hydrology
基金
国家自然科学基金项目(40872154)
关键词
氨氮
弱透水层
渗透迁移
吸附
硬度
ammonia nitrogen
aquitard
permeation and migration
absorption
water hardness
