摘要
影响电吸附脱盐效果的因素有热力学和动力学因素,热力学因素主要与电极材料和吸附等温线相关,动力学因素包括电迁移、对流和扩散作用。电迁移作用取决于离子的淌度(即单位场强下离子的迁移速率)和电场强度,对流作用取决于工作流量,扩散作用取决于离子的扩散系数。相对常规离子而言,重碳酸盐(HCO3-)的扩散系数与离子淌度均较低,而在中水回用领域中,碱度通常以HCO3-的形式出现,在不同进水HCO3-浓度条件下,研究了重碳酸盐碱度对电吸附设备脱盐性能的影响。
The thermodynamic and dynamics factors affect the effect of electro-adsorption desalination. Thermodynamic factors are mainly related to electro-adsorption material and adsorption isotherm. Dynamics factors include electromigration, convection and diffusion. Relative to conventional ions, the diffusion coefficient and ionic mobility of bicarbonate are lower. In the field of reclaimed water, alkalinity appears in the form of HCO3-. The impact of bicarbonate alkalinity on the desalination performance of electro-adsorption equipment is studied under different HCO3- concentrations.
出处
《黑龙江水利科技》
2013年第7期11-14,共4页
Heilongjiang Hydraulic Science and Technology
关键词
电吸附
试验方案
污水脱盐
重碳酸盐
扩散系数
去除影响
electro-adsorption
experiment scheme
sewage desalination
bicarbonate
diffusioncoefficient
removing influence
