改性污泥处理含铍废水的吸附特性研究

提出了用改性污泥处理含铍废水的新方法,解决了含铍废水达标难的问题。研究了铍在改性污泥上的吸附平衡和吸附动力学,考察了温度、pH对吸附过程的影响。结果表明:铍在改性污泥上的吸附等温线数据可用Fruendlich方程描述,而不能用Langmuir方程描述;铍的吸附过程遵循二级吸附动力学模型,也能用Lagergren一级速率方程描述;温度对吸附结果影响不大,pH为吸附过程的主要影响因素。

Adsorption treatment of Be-containing waste water with modified sludge

In the article a new method is put forward to treat Be-containing waste water with modified sludge to solve the problem of meeting the standard, the adsorption balance and kinetics are studied about Be on the modified sludge, at the same temperature and pH value are reviewed in the process of adsorption. The results shows that the adsorption of Be fit Fruendlich isotherm model but not Langmuir isotherm model; The adsorption of modified sludge follows the second-order kinetic model and also follows the first-order kinetic model. After studying the factors of temperature and pH value, the results shows that temperature do little to the result, and pH is the main factor in adsorption process.