饮用水中粉末活性炭应急处理技术研究

Powdered activated carbon emergency treatment technology in drinking water

以遭受突发性2,4滴污染的水体作为研究对象,考察了粉末活性炭技术对受2,4滴污染原水的应急处理效果。结果显示,粉末活性炭可有效去除2,4滴污染物,吸附时间越长,去除率越高。与准一级动力学方程相比,准二级动力学方程拟合曲线能更好地与数据点重合,相关系数为0.99,由准二级动力学方程计算得出的吸附容量值与试验中实际得到的吸附容量值很接近。粉末活性炭吸附2,4滴的Freundlich模型拟合度优于Langmuir模型,且对2,4滴的吸附存在多分子层吸附。

Taking the source water polluted suddenly by 2,4-D as research object, the emergency treatment effect on 2,4-D polluted raw water was investigated by powdered activated carbon （PAC） technology. The results indicated that PAC could effectively remove 2,4-D contaminants. The longer the adsorption time was, the greater the removal rate was. Compared with the quasi-first-order kinetic equation, quasi-second-order kinetic equation fitting curve could coincide with data points better, the relative coefficient was 0. 99. The adsorption capacity values obtained by quasi-second-order kinetic equation calculation were close to the actual values in better than Langmuir model of PAC adsorption of 2,4-D. test. The fitting degree of Freundlich model was There were muhilayer adsorption of the adsorption of 2,4-D.