摘要
室内模拟黄河水的结冰过程,探讨冷冻浓缩对黄河水体中各重金属元素的去除效应。结果表明,冷冻浓缩对实验水样中各重金属都有一定的去除效应,且其受到冷冻温度、冷冻时间、溶液浓度和种冰的影响。各重金属的去除率随着冷冻温度的降低而下降,-15℃为该实验水样的最佳冷冻温度;冷冻时间的增加,可以提高各重金属的去除率,24 h作为实验水样的最佳冷冻时间;去除率随着溶液浓度的升高而逐渐降低;加入种冰可以提高冷冻浓缩对各重金属的去除率。
The removal effect of freeze concentration on each of heavy metals in the Yellow river water was investigated through the indoor simulation freezing process. The results show that, the freeze concentration has removal effect on each of the heavy metals of the experiment samples. And it is influenced by the freezing temperature, the freezing time, and the solution concentration and seed ice. The removal rates of heavy metals decrease with the decreasing of the freezing temperature, and -15 ~C is the best freezing temperature of the experimental samples. As the freezing time increasing, the removal rate of the heavy metals increases, and 24 hours is the best freezing time of the experiment samples. The removal rate increases with the concentration of the solution decreasing. Adding seed ice can improve the removal rate of freezing concentration on each heavy metal.
出处
《水处理技术》
CAS
CSCD
北大核心
2014年第6期58-61,共4页
Technology of Water Treatment
基金
国家自然科学基金资助项目(51169018
50669003)
关键词
冷冻浓缩
黄河水
重金属
去除率
freezing concentrated
Yellow river water
heavy metals
removal rate
