镉锌离子在非饱和砂土中迁移规律的试验研究  

Experimental Study on the Migration of Cadmium and Zinc Ions in Unsaturated Sandy Soil

作　　者：刘棉玲[1] 郑明新[2] 李旭[2] 

机构地区：[1]华东交通大学学报编辑部,江西南昌330013 [2]华东交通大学土木建筑学院,江西南昌330013

出　　处：《过滤与分离》2013年第2期9-12,共4页Journal of Filtration & Separation

基　　金：国家自然科学基金项目(51068006);江西省自然科学基金项目(2007GZC0854)

摘　　要：南昌-莲塘地表浅层由于工业污染及生活污水的排放,地表重金属离子的含量远远超过了标准值。以该地区重金属镉、锌离子迁移为研究对象,利用土柱室内试验模拟在不同降雨量条件下镉、锌离子在非饱和砂和非饱和粘土中的运移状况,得到非饱和砂土对镉离子的吸附作用大于对锌离子的吸附作用;在相同浓度不同含水量的情况下,前期含水量越大离子迁移的速率也越快。The contents of heavy metal ions at land surface were far more than the standard values at Nan chang-Lian tang because of the industry pollution and sewage discharge. The regularity of cadmium and zinc ions migration was studied in the paper, using soil column tests to simulate the migration of cadmium and zinc ions in unsaturated sandy soil at different rainfall conditions. It was showed by the results that adsorption of cadmium ion in unsaturated sandy soil was greater than that of zinc ion. At the condition of the same concentration and different water content, the ion migration rate was faster with the moisture increased.

关 键 词：非饱和砂土 镉、锌离子 土柱试验  迁移规律 

分 类 号：X131.3[环境科学与工程—环境科学]