摘要
采用烧杯混凝实验,分别以实验室配水和松花江水为本底,研究了水合二氧化锰强化三氯化铁共沉降去除水中微量镉的效能。详细探讨了影响水合二氧化锰强化三氯化铁共沉降去除水中微量镉的主要因素。结果表明:两种水质条件下,水合二氧化锰均可强化FeCl3混凝去除水中的微量镉,镉的去除率明显高于单纯FeCl3混凝。水体pH值、浊度、腐殖酸等水质参数对于水合二氧化锰强化三氯化铁共沉降去除水中微量镉的效能有不同程度的影响。其中水体pH值对水合二氧化锰强化三氯化铁共沉降去除水中微量镉的影响十分显著,Cd(Ⅱ)的去除效果随着水体pH增加显著升高。
The efficiency of hydrous manganese dioxide enhanced ferric chloride co-precipitation for removing traces of cadmium in water was stud- ied in jar tests with the water mixed in lab and the water from Songhua River as substrates. And the main factors which would influence the removal of Cd（ II ） was investigated in detail. The results indicated that the hydrous manganese dioxide had significantly enhanced the ferric chloride co-precipita- tion process for removing Cd（ II ） in different kinds of raw water. A higher removal rate of cadmium could be achieved with the aid of hydrous manganese dioxide in ferric chloride coagulation process which was much better than that of pure FeC13 coagulation. Some parameters of water, such as pH value, turbidity of raw water and humic acid had different effects on the removal of Cd（ II ）. The pH value was the key factor for hydrous manganese dioxide en- hanced ferric chloride co-precipitation for removing traces of Cd（ II ）. The removal rate would be much higher with the increase of pH value.
出处
《化学与粘合》
CAS
2014年第5期342-345,共4页
Chemistry and Adhesion
基金
黑龙江省自然科学基金项目(编号:E200818)
黑龙江省博士后基金项目
作者简介
杨威（1964-），女，黑龙江哈尔滨人，博士，教授，硕士生导师，研究领域：水处理技术。
